diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-01.sqlpp b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-01.sqlpp
new file mode 100644
index 0000000..8c760a6
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-01.sqlpp
@@ -0,0 +1,30 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+DROP DATAVERSE test IF EXISTS;
+CREATE DATAVERSE test;
+USE test;
+
+CREATE DATASET ds1(id int not unknown, a string, b int) OPEN TYPE PRIMARY KEY id WITH {"merge-policy": {
+"name": "correlated-prefix","parameters": { "max-mergable-component-size": 16384, "max-tolerance-component-count": 3 }}};
+CREATE INDEX idx1 ON ds1(x: int);
+CREATE VIEW view1(id int, x int, y int) DEFAULT NULL AS SELECT id, x, y FROM ds1;
+
+// test that idx1 on x is not used since idx1 does not have the CAST modifier and the field x has cast
+SELECT id, x, y FROM view1 WHERE x <= 1 ORDER BY id;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-02.sqlpp b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-02.sqlpp
new file mode 100644
index 0000000..8a09ba6
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-02.sqlpp
@@ -0,0 +1,30 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+DROP DATAVERSE test IF EXISTS;
+CREATE DATAVERSE test;
+USE test;
+
+CREATE DATASET ds2(id int not unknown, a string, b int) OPEN TYPE PRIMARY KEY id WITH {"merge-policy": {
+"name": "correlated-prefix","parameters": { "max-mergable-component-size": 16384, "max-tolerance-component-count": 3 }}};
+CREATE INDEX idx2 ON ds2(x: int) CAST (DEFAULT NULL);
+CREATE VIEW view2(id int, x int, y int) DEFAULT NULL AS SELECT id, x, y FROM ds2;
+
+// test that idx2 on x is used since idx2 has the CAST modifier and the field x has cast
+SELECT id, x, y FROM view2 WHERE x <= 1 ORDER BY id;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-03.sqlpp b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-03.sqlpp
new file mode 100644
index 0000000..7cc0f67
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-03.sqlpp
@@ -0,0 +1,30 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+DROP DATAVERSE test IF EXISTS;
+CREATE DATAVERSE test;
+USE test;
+
+CREATE DATASET ds3(id int not unknown, a string, b int) OPEN TYPE PRIMARY KEY id WITH {"merge-policy":
+{"name": "correlated-prefix","parameters": { "max-mergable-component-size": 16384, "max-tolerance-component-count": 3 }}};
+CREATE INDEX idx3 ON ds3(x: int) CAST (DEFAULT NULL);
+CREATE VIEW view3(id int, x string, y int) DEFAULT NULL AS SELECT id, x, y FROM ds3;
+
+// test that idx3 on x is not used since idx3 has the CAST modifier on int and the field x has cast as string
+SELECT id, x, y FROM view3 WHERE x <= "1" ORDER BY id;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-04.sqlpp b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-04.sqlpp
new file mode 100644
index 0000000..0c908ea
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-04.sqlpp
@@ -0,0 +1,30 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+DROP DATAVERSE test IF EXISTS;
+CREATE DATAVERSE test;
+USE test;
+
+CREATE DATASET ds3(id int not unknown, a string, b int) OPEN TYPE PRIMARY KEY id WITH {"merge-policy":
+{"name": "correlated-prefix","parameters": { "max-mergable-component-size": 16384, "max-tolerance-component-count": 3 }}};
+CREATE INDEX idx3 ON ds3(x: int) CAST (DEFAULT NULL);
+CREATE VIEW view3(id int, x string, y int) DEFAULT NULL AS SELECT id, x, y FROM ds3;
+
+// test that idx3 on x is not used since idx3 has the CAST modifier and the field x does not have cast
+SELECT id, x, y FROM ds3 WHERE x <= 1 ORDER BY id;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-05.sqlpp b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-05.sqlpp
new file mode 100644
index 0000000..9d3da6f
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-05.sqlpp
@@ -0,0 +1,39 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+DROP DATAVERSE test IF EXISTS;
+CREATE DATAVERSE test;
+USE test;
+
+CREATE DATASET ds2(id int not unknown, a string, b int) OPEN TYPE PRIMARY KEY id WITH {"merge-policy":
+{"name": "correlated-prefix","parameters": { "max-mergable-component-size": 16384, "max-tolerance-component-count": 3 }}};
+CREATE DATASET ds4(id int not unknown, a string, b int) OPEN TYPE PRIMARY KEY id WITH {"merge-policy":
+{"name": "correlated-prefix","parameters": { "max-mergable-component-size": 16384, "max-tolerance-component-count": 3 }}};
+
+CREATE INDEX idx2 ON ds2(x: int) CAST (DEFAULT NULL);
+
+CREATE VIEW view2(id int, x int, y int) DEFAULT NULL AS SELECT id, x, y FROM ds2;
+CREATE VIEW view4(id int, x int, y int) DEFAULT NULL AS SELECT id, x, y FROM ds4;
+
+
+USE test;
+// test that idx2 on view2(x) is used. both v4.x and v2.x are int and both v2.x and idx2 use int-default-null.
+SELECT v4.x AS v4x, v2.x AS v2x
+FROM view4 AS v4, view2 AS v2
+WHERE v4.x /*+ indexnl */ = v2.x ORDER BY v4x, v2x;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-06.sqlpp b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-06.sqlpp
new file mode 100644
index 0000000..bfe5517
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-06.sqlpp
@@ -0,0 +1,38 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+DROP DATAVERSE test IF EXISTS;
+CREATE DATAVERSE test;
+USE test;
+
+CREATE DATASET ds3(id int not unknown, a string, b int) OPEN TYPE PRIMARY KEY id WITH {"merge-policy":
+{"name": "correlated-prefix","parameters": { "max-mergable-component-size": 16384, "max-tolerance-component-count": 3 }}};
+CREATE DATASET ds4(id int not unknown, a string, b int) OPEN TYPE PRIMARY KEY id WITH {"merge-policy":
+{"name": "correlated-prefix","parameters": { "max-mergable-component-size": 16384, "max-tolerance-component-count": 3 }}};
+
+CREATE INDEX idx3 ON ds3(x: int) CAST (DEFAULT NULL);
+
+CREATE VIEW view3(id int, x string, y int) DEFAULT NULL AS SELECT id, x, y FROM ds3;
+CREATE VIEW view4(id int, x int, y int) DEFAULT NULL AS SELECT id, x, y FROM ds4;
+
+USE test;
+// test that idx3 on view3(x) is not used because v3.x uses string-default-null and idx3 uses int-default-null
+SELECT v4.x AS v4x, v3.x AS v3x
+FROM view4 AS v4, view3 AS v3
+WHERE v4.x /*+ indexnl */ = v3.x ORDER BY v4x, v3x;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-07.sqlpp b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-07.sqlpp
new file mode 100644
index 0000000..76321d4
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-07.sqlpp
@@ -0,0 +1,38 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+DROP DATAVERSE test IF EXISTS;
+CREATE DATAVERSE test;
+USE test;
+
+CREATE DATASET ds1(id int not unknown, a string, b int) OPEN TYPE PRIMARY KEY id WITH {"merge-policy":
+{"name": "correlated-prefix","parameters": { "max-mergable-component-size": 16384, "max-tolerance-component-count": 3 }}};
+CREATE DATASET ds4(id int not unknown, a string, b int) OPEN TYPE PRIMARY KEY id WITH {"merge-policy":
+{"name": "correlated-prefix","parameters": { "max-mergable-component-size": 16384, "max-tolerance-component-count": 3 }}};
+
+CREATE INDEX idx1 ON ds1(x: int);
+
+CREATE VIEW view1(id int, x int, y int) DEFAULT NULL AS SELECT id, x, y FROM ds1;
+CREATE VIEW view4(id int, x int, y int) DEFAULT NULL AS SELECT id, x, y FROM ds4;
+
+USE test;
+// test that idx1 is not used because idx1 does not have CAST modifier (idx1 is just int and v1.x uses int-default-null).
+SELECT v4.x AS v4x, v1.x AS v1x
+FROM view4 AS v4, view1 AS v1
+WHERE v4.x /*+ indexnl */ = v1.x ORDER BY v4x, v1x;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-08.sqlpp b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-08.sqlpp
new file mode 100644
index 0000000..76321d4
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-08.sqlpp
@@ -0,0 +1,38 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+DROP DATAVERSE test IF EXISTS;
+CREATE DATAVERSE test;
+USE test;
+
+CREATE DATASET ds1(id int not unknown, a string, b int) OPEN TYPE PRIMARY KEY id WITH {"merge-policy":
+{"name": "correlated-prefix","parameters": { "max-mergable-component-size": 16384, "max-tolerance-component-count": 3 }}};
+CREATE DATASET ds4(id int not unknown, a string, b int) OPEN TYPE PRIMARY KEY id WITH {"merge-policy":
+{"name": "correlated-prefix","parameters": { "max-mergable-component-size": 16384, "max-tolerance-component-count": 3 }}};
+
+CREATE INDEX idx1 ON ds1(x: int);
+
+CREATE VIEW view1(id int, x int, y int) DEFAULT NULL AS SELECT id, x, y FROM ds1;
+CREATE VIEW view4(id int, x int, y int) DEFAULT NULL AS SELECT id, x, y FROM ds4;
+
+USE test;
+// test that idx1 is not used because idx1 does not have CAST modifier (idx1 is just int and v1.x uses int-default-null).
+SELECT v4.x AS v4x, v1.x AS v1x
+FROM view4 AS v4, view1 AS v1
+WHERE v4.x /*+ indexnl */ = v1.x ORDER BY v4x, v1x;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-09.sqlpp b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-09.sqlpp
new file mode 100644
index 0000000..1199148
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-09.sqlpp
@@ -0,0 +1,37 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+DROP DATAVERSE test IF EXISTS;
+CREATE DATAVERSE test;
+USE test;
+
+CREATE DATASET ds2(id int not unknown, a string, b int) OPEN TYPE PRIMARY KEY id WITH {"merge-policy":
+{"name": "correlated-prefix","parameters": { "max-mergable-component-size": 16384, "max-tolerance-component-count": 3 }}};
+CREATE DATASET ds4(id int not unknown, a string, b int) OPEN TYPE PRIMARY KEY id WITH {"merge-policy":
+{"name": "correlated-prefix","parameters": { "max-mergable-component-size": 16384, "max-tolerance-component-count": 3 }}};
+
+CREATE INDEX idx2 ON ds2(x: int) CAST (DEFAULT NULL);
+
+CREATE VIEW view4(id int, x int, y int) DEFAULT NULL AS SELECT id, x, y FROM ds4;
+
+USE test;
+// test that idx2 is not used because idx2 uses int-default-null and ds2.x is just int.
+SELECT v4.x AS v4x, ds2.x AS ds2x
+FROM view4 AS v4, ds2 AS ds2
+WHERE v4.x /*+ indexnl */ = ds2.x ORDER BY v4x, ds2x;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-10.sqlpp b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-10.sqlpp
new file mode 100644
index 0000000..0c2871e
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-10.sqlpp
@@ -0,0 +1,36 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+DROP DATAVERSE test IF EXISTS;
+CREATE DATAVERSE test;
+USE test;
+
+CREATE DATASET ds5(id int not unknown) OPEN TYPE PRIMARY KEY id WITH {"merge-policy":
+{"name": "correlated-prefix","parameters": { "max-mergable-component-size": 16384, "max-tolerance-component-count": 3 }}};
+
+CREATE INDEX idx5_dt_fmt ON ds5(f_dt_fmt: datetime) CAST (DEFAULT NULL datetime 'MM/DD/YYYY hh:mm:ss.nnna' date 'MM/DD/YYYY');
+
+CREATE VIEW view5_dt_fmt(id int, f_dt_fmt datetime) DEFAULT NULL
+datetime 'MM/DD/YYYY hh:mm:ss.nnna' date 'MM/DD/YYYY' time 'hh:mm:ss.nnna' AS SELECT id, f_dt_fmt FROM ds5;
+
+// testing that idx5_dt_fmt is selected
+SELECT VALUE v
+FROM view5_dt_fmt AS v
+WHERE v.f_dt_fmt < datetime('2020-12-20T00:00:00')
+ORDER BY v.id;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-11.sqlpp b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-11.sqlpp
new file mode 100644
index 0000000..f82ab78
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-11.sqlpp
@@ -0,0 +1,36 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+DROP DATAVERSE test IF EXISTS;
+CREATE DATAVERSE test;
+USE test;
+
+CREATE DATASET ds5(id int not unknown) OPEN TYPE PRIMARY KEY id WITH {"merge-policy":
+{"name": "correlated-prefix","parameters": { "max-mergable-component-size": 16384, "max-tolerance-component-count": 3 }}};
+
+CREATE INDEX idx5_d_fmt ON ds5(f_d_fmt: date) CAST (DEFAULT NULL date 'MM/DD/YYYY');
+
+CREATE VIEW view5_d_fmt(id int, f_d_fmt date) DEFAULT NULL
+datetime 'MM/DD/YYYY hh:mm:ss.nnna' date 'MM/DD/YYYY' time 'hh:mm:ss.nnna' AS SELECT id, f_d_fmt FROM ds5;
+
+// testing that idx5_d_fmt is selected
+SELECT VALUE v
+FROM view5_d_fmt AS v
+WHERE v.f_d_fmt < date('2020-12-20')
+ORDER BY v.id;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-12.sqlpp b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-12.sqlpp
new file mode 100644
index 0000000..dcb6e51
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-12.sqlpp
@@ -0,0 +1,36 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+DROP DATAVERSE test IF EXISTS;
+CREATE DATAVERSE test;
+USE test;
+
+CREATE DATASET ds5(id int not unknown) OPEN TYPE PRIMARY KEY id WITH {"merge-policy":
+{"name": "correlated-prefix","parameters": { "max-mergable-component-size": 16384, "max-tolerance-component-count": 3 }}};
+
+CREATE INDEX idx5_t_fmt ON ds5(f_t_fmt: time) CAST (DEFAULT NULL time 'hh:mm:ss.nnna');
+
+CREATE VIEW view5_t_fmt(id int, f_t_fmt time) DEFAULT NULL
+datetime 'MM/DD/YYYY hh:mm:ss.nnna' date 'MM/DD/YYYY' time 'hh:mm:ss.nnna' AS SELECT id, f_t_fmt FROM ds5;
+
+// testing that idx5_t_fmt is selected
+SELECT VALUE v
+FROM view5_t_fmt AS v
+WHERE v.f_t_fmt < time('18:13:03')
+ORDER BY v.id;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-13.sqlpp b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-13.sqlpp
new file mode 100644
index 0000000..8b47600
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-13.sqlpp
@@ -0,0 +1,35 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+DROP DATAVERSE test IF EXISTS;
+CREATE DATAVERSE test;
+USE test;
+
+CREATE DATASET ds6(id int not unknown) OPEN TYPE PRIMARY KEY id WITH {"merge-policy":
+{"name": "correlated-prefix","parameters": { "max-mergable-component-size": 16384, "max-tolerance-component-count": 3 }}};
+
+CREATE INDEX idx6_dt ON ds6(f_dt: datetime) CAST (DEFAULT NULL);
+
+CREATE VIEW view6_dt(id int, f_dt datetime) DEFAULT NULL AS SELECT id, f_dt FROM ds6;
+
+// testing that idx6_dt is selected
+SELECT VALUE v
+FROM view6_dt AS v
+WHERE v.f_dt < datetime('2020-12-20T00:00:00')
+ORDER BY v.id;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-14.sqlpp b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-14.sqlpp
new file mode 100644
index 0000000..bc0686e
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-14.sqlpp
@@ -0,0 +1,35 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+DROP DATAVERSE test IF EXISTS;
+CREATE DATAVERSE test;
+USE test;
+
+CREATE DATASET ds6(id int not unknown) OPEN TYPE PRIMARY KEY id WITH {"merge-policy":
+{"name": "correlated-prefix","parameters": { "max-mergable-component-size": 16384, "max-tolerance-component-count": 3 }}};
+
+CREATE INDEX idx6_d ON ds6(f_d: date) CAST (DEFAULT NULL);
+
+CREATE VIEW view6_d(id int, f_d date) DEFAULT NULL AS SELECT id, f_d FROM ds6;
+
+// testing that idx6_d is selected
+SELECT VALUE v
+FROM view6_d AS v
+WHERE v.f_d < date('2020-12-20')
+ORDER BY v.id;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-15.sqlpp b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-15.sqlpp
new file mode 100644
index 0000000..18860c8
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-15.sqlpp
@@ -0,0 +1,35 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+DROP DATAVERSE test IF EXISTS;
+CREATE DATAVERSE test;
+USE test;
+
+CREATE DATASET ds6(id int not unknown) OPEN TYPE PRIMARY KEY id WITH {"merge-policy":
+{"name": "correlated-prefix","parameters": { "max-mergable-component-size": 16384, "max-tolerance-component-count": 3 }}};
+
+CREATE INDEX idx6_t ON ds6(f_t: time) CAST (DEFAULT NULL);
+
+CREATE VIEW view6_t(id int, f_t time) DEFAULT NULL AS SELECT id, f_t FROM ds6;
+
+// testing that idx6_t is selected
+SELECT VALUE v
+FROM view6_t AS v
+WHERE v.f_t < time('18:13:03')
+ORDER BY v.id;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-16.sqlpp b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-16.sqlpp
new file mode 100644
index 0000000..3e4eaff
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-16.sqlpp
@@ -0,0 +1,36 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+DROP DATAVERSE test IF EXISTS;
+CREATE DATAVERSE test;
+USE test;
+
+CREATE DATASET ds5(id int not unknown) OPEN TYPE PRIMARY KEY id WITH {"merge-policy":
+{"name": "correlated-prefix","parameters": { "max-mergable-component-size": 16384, "max-tolerance-component-count": 3 }}};
+
+CREATE INDEX idx5_dt_fmt ON ds5(f_dt_fmt: datetime) CAST (DEFAULT NULL datetime 'MM/DD/YYYY hh:mm:ss.nnna' date 'MM/DD/YYYY');
+
+CREATE VIEW view5_dt_fmt(id int, f_dt_fmt datetime) DEFAULT NULL
+datetime 'MM-DD-YYYY hh:mm:ss.nnna' date 'MM/DD/YYYY' time 'hh:mm:ss.nnna' AS SELECT id, f_dt_fmt FROM ds5;
+
+// testing that the index idx5_dt_fmt is not selected because its datetime format is not the same as view view5_dt_fmt
+SELECT VALUE v
+FROM view5_dt_fmt AS v
+WHERE v.f_dt_fmt < datetime('2020-12-20T00:00:00')
+ORDER BY v.id;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-17.sqlpp b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-17.sqlpp
new file mode 100644
index 0000000..09611b4
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-17.sqlpp
@@ -0,0 +1,35 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+DROP DATAVERSE test IF EXISTS;
+CREATE DATAVERSE test;
+USE test;
+
+CREATE DATASET ds6(id int not unknown) OPEN TYPE PRIMARY KEY id WITH {"merge-policy":
+{"name": "correlated-prefix","parameters": { "max-mergable-component-size": 16384, "max-tolerance-component-count": 3 }}};
+
+CREATE INDEX idx6_d_fmt ON ds6(f_d: date) CAST (DEFAULT NULL date 'MM/DD/YYYY');
+
+CREATE VIEW view6_d(id int, f_d date) DEFAULT NULL AS SELECT id, f_d FROM ds6;
+
+// testing that idx6_d_fmt is not selected because the date function in index is with format and the view without format
+SELECT VALUE v
+FROM view6_d AS v
+WHERE v.f_d < date('2020-12-20')
+ORDER BY v.id;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-18.sqlpp b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-18.sqlpp
new file mode 100644
index 0000000..cc216dc
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-18.sqlpp
@@ -0,0 +1,36 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+DROP DATAVERSE test IF EXISTS;
+CREATE DATAVERSE test;
+USE test;
+
+CREATE DATASET ds5(id int not unknown) OPEN TYPE PRIMARY KEY id WITH {"merge-policy":
+{"name": "correlated-prefix","parameters": { "max-mergable-component-size": 16384, "max-tolerance-component-count": 3 }}};
+
+CREATE INDEX idx5_t ON ds5(f_t_fmt: time) CAST (DEFAULT NULL);
+
+CREATE VIEW view5_t_fmt(id int, f_t_fmt time) DEFAULT NULL
+datetime 'MM/DD/YYYY hh:mm:ss.nnna' date 'MM/DD/YYYY' time 'hh:mm:ss.nnna' AS SELECT id, f_t_fmt FROM ds5;
+
+// testing that idx5_t is not selected because the time function in index is without format and the view with format
+SELECT VALUE v
+FROM view5_t_fmt AS v
+WHERE v.f_t_fmt < time('18:13:03')
+ORDER BY v.id;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-19.sqlpp b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-19.sqlpp
new file mode 100644
index 0000000..dc0f66d
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-19.sqlpp
@@ -0,0 +1,43 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+DROP DATAVERSE test IF EXISTS;
+CREATE DATAVERSE test;
+USE test;
+
+CREATE DATASET ds5(id int not unknown) OPEN TYPE PRIMARY KEY id WITH {"merge-policy":
+{"name": "correlated-prefix","parameters": { "max-mergable-component-size": 16384, "max-tolerance-component-count": 3 }}};
+
+CREATE INDEX idx5_dt_fmt ON ds5(f_dt_fmt: datetime) CAST (DEFAULT NULL datetime 'MM/DD/YYYY hh:mm:ss.nnna' date 'MM/DD/YYYY');
+
+CREATE VIEW view5_dt_fmt(id int, f_dt_fmt datetime) DEFAULT NULL
+datetime 'MM/DD/YYYY hh:mm:ss.nnna' date 'MM/DD/YYYY' time 'hh:mm:ss.nnna' AS SELECT id, f_dt_fmt FROM ds5;
+
+CREATE DATASET ds6(id int not unknown) OPEN TYPE PRIMARY KEY id WITH {"merge-policy":
+{"name": "correlated-prefix","parameters": { "max-mergable-component-size": 16384, "max-tolerance-component-count": 3 }}};
+
+CREATE INDEX idx6_dt ON ds6(f_dt: datetime) CAST (DEFAULT NULL);
+
+CREATE VIEW view6_dt(id int, f_dt datetime) DEFAULT NULL AS SELECT id, f_dt FROM ds6;
+
+USE test;
+// testing that idx5_dt_fmt is used
+SELECT v6.f_dt AS v6f_dt, v5.f_dt_fmt AS v5f_dt_fmt
+FROM view6_dt AS v6, view5_dt_fmt AS v5
+WHERE v6.f_dt /*+ indexnl */ = v5.f_dt_fmt ORDER BY v6f_dt, v5f_dt_fmt;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-20.sqlpp b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-20.sqlpp
new file mode 100644
index 0000000..cb77c5f
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-20.sqlpp
@@ -0,0 +1,37 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+DROP DATAVERSE test IF EXISTS;
+CREATE DATAVERSE test;
+USE test;
+
+CREATE TYPE t1 AS { id: int, s_f1: string, s_f2: string?, i_f: int? };
+CREATE DATASET ds7(t1) PRIMARY KEY id WITH {"merge-policy":
+{"name": "correlated-prefix","parameters": { "max-mergable-component-size": 16384, "max-tolerance-component-count": 3 }}};
+
+CREATE INDEX idx1 ON ds7(s_f2);
+CREATE INDEX idx2 ON ds7(s_f2: string) CAST (DEFAULT NULL);
+CREATE INDEX idx3 ON ds7(s_f2: int) CAST (DEFAULT NULL);
+
+CREATE VIEW view7_1(id int, s_f2 string, i_f int) DEFAULT NULL AS SELECT id, s_f2, i_f FROM ds7;
+CREATE VIEW view7_2(id int, s_f2 int, i_f int) DEFAULT NULL AS SELECT id, s_f2, i_f FROM ds7;
+
+USE test;
+// index idx2 should be used
+SELECT id, s_f2 FROM view7_1 WHERE s_f2 < "4" ORDER BY id;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-21.sqlpp b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-21.sqlpp
new file mode 100644
index 0000000..371a15b
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-21.sqlpp
@@ -0,0 +1,37 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+DROP DATAVERSE test IF EXISTS;
+CREATE DATAVERSE test;
+USE test;
+
+CREATE TYPE t1 AS { id: int, s_f1: string, s_f2: string?, i_f: int? };
+CREATE DATASET ds7(t1) PRIMARY KEY id WITH {"merge-policy":
+{"name": "correlated-prefix","parameters": { "max-mergable-component-size": 16384, "max-tolerance-component-count": 3 }}};
+
+CREATE INDEX idx1 ON ds7(s_f2);
+CREATE INDEX idx2 ON ds7(s_f2: string) CAST (DEFAULT NULL);
+CREATE INDEX idx3 ON ds7(s_f2: int) CAST (DEFAULT NULL);
+
+CREATE VIEW view7_1(id int, s_f2 string, i_f int) DEFAULT NULL AS SELECT id, s_f2, i_f FROM ds7;
+CREATE VIEW view7_2(id int, s_f2 int, i_f int) DEFAULT NULL AS SELECT id, s_f2, i_f FROM ds7;
+
+USE test;
+// no index is used (and no result is returned because of incompatible types. s_f2 string vs. 4 int)
+SELECT id, s_f2 FROM view7_1 WHERE s_f2 < 4 ORDER BY id;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-22.sqlpp b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-22.sqlpp
new file mode 100644
index 0000000..9021e22
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-22.sqlpp
@@ -0,0 +1,37 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+DROP DATAVERSE test IF EXISTS;
+CREATE DATAVERSE test;
+USE test;
+
+CREATE TYPE t1 AS { id: int, s_f1: string, s_f2: string?, i_f: int? };
+CREATE DATASET ds7(t1) PRIMARY KEY id WITH {"merge-policy":
+{"name": "correlated-prefix","parameters": { "max-mergable-component-size": 16384, "max-tolerance-component-count": 3 }}};
+
+CREATE INDEX idx1 ON ds7(s_f2);
+CREATE INDEX idx2 ON ds7(s_f2: string) CAST (DEFAULT NULL);
+CREATE INDEX idx3 ON ds7(s_f2: int) CAST (DEFAULT NULL);
+
+CREATE VIEW view7_1(id int, s_f2 string, i_f int) DEFAULT NULL AS SELECT id, s_f2, i_f FROM ds7;
+CREATE VIEW view7_2(id int, s_f2 int, i_f int) DEFAULT NULL AS SELECT id, s_f2, i_f FROM ds7;
+
+USE test;
+// no index is used (and no result is returned because of incompatible types. s_f2 int vs. "4" string)
+SELECT id, s_f2 FROM view7_2 WHERE s_f2 < "4" ORDER BY id;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-23.sqlpp b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-23.sqlpp
new file mode 100644
index 0000000..ff85182
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-23.sqlpp
@@ -0,0 +1,37 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+DROP DATAVERSE test IF EXISTS;
+CREATE DATAVERSE test;
+USE test;
+
+CREATE TYPE t1 AS { id: int, s_f1: string, s_f2: string?, i_f: int? };
+CREATE DATASET ds7(t1) PRIMARY KEY id WITH {"merge-policy":
+{"name": "correlated-prefix","parameters": { "max-mergable-component-size": 16384, "max-tolerance-component-count": 3 }}};
+
+CREATE INDEX idx1 ON ds7(s_f2);
+CREATE INDEX idx2 ON ds7(s_f2: string) CAST (DEFAULT NULL);
+CREATE INDEX idx3 ON ds7(s_f2: int) CAST (DEFAULT NULL);
+
+CREATE VIEW view7_1(id int, s_f2 string, i_f int) DEFAULT NULL AS SELECT id, s_f2, i_f FROM ds7;
+CREATE VIEW view7_2(id int, s_f2 int, i_f int) DEFAULT NULL AS SELECT id, s_f2, i_f FROM ds7;
+
+USE test;
+// index idx3 should be used
+SELECT id, s_f2 FROM view7_2 WHERE s_f2 < 4 ORDER BY id;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-24.sqlpp b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-24.sqlpp
new file mode 100644
index 0000000..c55bb15
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-24.sqlpp
@@ -0,0 +1,38 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+DROP DATAVERSE test IF EXISTS;
+CREATE DATAVERSE test;
+USE test;
+
+CREATE TYPE t1 AS { id: int, s_f1: string, s_f2: string?, i_f: int? };
+CREATE DATASET ds7(t1) PRIMARY KEY id WITH {"merge-policy":
+{"name": "correlated-prefix","parameters": { "max-mergable-component-size": 16384, "max-tolerance-component-count": 3 }}};
+
+CREATE INDEX idx1 ON ds7(s_f2);
+CREATE INDEX idx2 ON ds7(s_f2: string) CAST (DEFAULT NULL);
+CREATE INDEX idx3 ON ds7(s_f2: int) CAST (DEFAULT NULL);
+
+CREATE VIEW view7_1(id int, s_f2 string, i_f int) DEFAULT NULL AS SELECT id, s_f2, i_f FROM ds7;
+CREATE VIEW view7_2(id int, s_f2 int, i_f int) DEFAULT NULL AS SELECT id, s_f2, i_f FROM ds7;
+
+USE test;
+// index idx1 should be used
+set `compiler.indexonly` "false"; // there is an issue with using index only plan where nulls/missings are included
+SELECT id, s_f2 FROM ds7 WHERE s_f2 < "4" ORDER BY id;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-01.plan b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-01.plan
new file mode 100644
index 0000000..0dcfc44
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-01.plan
@@ -0,0 +1,16 @@
+-- DISTRIBUTE_RESULT  |PARTITIONED|
+  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+    -- STREAM_PROJECT  |PARTITIONED|
+      -- ASSIGN  |PARTITIONED|
+        -- SORT_MERGE_EXCHANGE [$$66(ASC) ]  |PARTITIONED|
+          -- STABLE_SORT [$$66(ASC)]  |PARTITIONED|
+            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+              -- STREAM_PROJECT  |PARTITIONED|
+                -- ASSIGN  |PARTITIONED|
+                  -- STREAM_SELECT  |PARTITIONED|
+                    -- STREAM_PROJECT  |PARTITIONED|
+                      -- ASSIGN  |PARTITIONED|
+                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                          -- DATASOURCE_SCAN (test.ds1)  |PARTITIONED|
+                            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                              -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-02.plan b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-02.plan
new file mode 100644
index 0000000..7997aad
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-02.plan
@@ -0,0 +1,23 @@
+-- DISTRIBUTE_RESULT  |PARTITIONED|
+  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+    -- STREAM_PROJECT  |PARTITIONED|
+      -- ASSIGN  |PARTITIONED|
+        -- SORT_MERGE_EXCHANGE [$$66(ASC) ]  |PARTITIONED|
+          -- STABLE_SORT [$$66(ASC)]  |PARTITIONED|
+            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+              -- STREAM_PROJECT  |PARTITIONED|
+                -- ASSIGN  |PARTITIONED|
+                  -- STREAM_SELECT  |PARTITIONED|
+                    -- STREAM_PROJECT  |PARTITIONED|
+                      -- ASSIGN  |PARTITIONED|
+                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                          -- BTREE_SEARCH (test.ds2.ds2)  |PARTITIONED|
+                            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                              -- STABLE_SORT [$$72(ASC)]  |PARTITIONED|
+                                -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                  -- STREAM_PROJECT  |PARTITIONED|
+                                    -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                      -- BTREE_SEARCH (test.ds2.idx2)  |PARTITIONED|
+                                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                          -- ASSIGN  |PARTITIONED|
+                                            -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-03.plan b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-03.plan
new file mode 100644
index 0000000..d1264cb
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-03.plan
@@ -0,0 +1,16 @@
+-- DISTRIBUTE_RESULT  |PARTITIONED|
+  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+    -- STREAM_PROJECT  |PARTITIONED|
+      -- ASSIGN  |PARTITIONED|
+        -- SORT_MERGE_EXCHANGE [$$66(ASC) ]  |PARTITIONED|
+          -- STABLE_SORT [$$66(ASC)]  |PARTITIONED|
+            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+              -- STREAM_PROJECT  |PARTITIONED|
+                -- ASSIGN  |PARTITIONED|
+                  -- STREAM_SELECT  |PARTITIONED|
+                    -- STREAM_PROJECT  |PARTITIONED|
+                      -- ASSIGN  |PARTITIONED|
+                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                          -- DATASOURCE_SCAN (test.ds3)  |PARTITIONED|
+                            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                              -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-04.plan b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-04.plan
new file mode 100644
index 0000000..3582cf3
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-04.plan
@@ -0,0 +1,12 @@
+-- DISTRIBUTE_RESULT  |PARTITIONED|
+  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+    -- STREAM_PROJECT  |PARTITIONED|
+      -- ASSIGN  |PARTITIONED|
+        -- SORT_MERGE_EXCHANGE [$$21(ASC) ]  |PARTITIONED|
+          -- STREAM_SELECT  |PARTITIONED|
+            -- STREAM_PROJECT  |PARTITIONED|
+              -- ASSIGN  |PARTITIONED|
+                -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                  -- DATASOURCE_SCAN (test.ds3)  |PARTITIONED|
+                    -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                      -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-05.plan b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-05.plan
new file mode 100644
index 0000000..6285f162
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-05.plan
@@ -0,0 +1,27 @@
+-- DISTRIBUTE_RESULT  |PARTITIONED|
+  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+    -- STREAM_PROJECT  |PARTITIONED|
+      -- ASSIGN  |PARTITIONED|
+        -- SORT_MERGE_EXCHANGE [$$122(ASC), $$123(ASC) ]  |PARTITIONED|
+          -- STABLE_SORT [$$122(ASC), $$123(ASC)]  |PARTITIONED|
+            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+              -- STREAM_SELECT  |PARTITIONED|
+                -- STREAM_PROJECT  |PARTITIONED|
+                  -- ASSIGN  |PARTITIONED|
+                    -- STREAM_PROJECT  |PARTITIONED|
+                      -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                        -- BTREE_SEARCH (test.ds2.ds2)  |PARTITIONED|
+                          -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                            -- STABLE_SORT [$$139(ASC)]  |PARTITIONED|
+                              -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                -- STREAM_PROJECT  |PARTITIONED|
+                                  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                    -- BTREE_SEARCH (test.ds2.idx2)  |PARTITIONED|
+                                      -- BROADCAST_EXCHANGE  |PARTITIONED|
+                                        -- STREAM_PROJECT  |PARTITIONED|
+                                          -- ASSIGN  |PARTITIONED|
+                                            -- STREAM_PROJECT  |PARTITIONED|
+                                              -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                                -- DATASOURCE_SCAN (test.ds4)  |PARTITIONED|
+                                                  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                                    -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-06.plan b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-06.plan
new file mode 100644
index 0000000..510ccca
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-06.plan
@@ -0,0 +1,24 @@
+-- DISTRIBUTE_RESULT  |PARTITIONED|
+  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+    -- STREAM_PROJECT  |PARTITIONED|
+      -- ASSIGN  |PARTITIONED|
+        -- SORT_MERGE_EXCHANGE [$$122(ASC), $$123(ASC) ]  |PARTITIONED|
+          -- STABLE_SORT [$$122(ASC), $$123(ASC)]  |PARTITIONED|
+            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+              -- HYBRID_HASH_JOIN [$$122][$$123]  |PARTITIONED|
+                -- HASH_PARTITION_EXCHANGE [$$122]  |PARTITIONED|
+                  -- STREAM_PROJECT  |PARTITIONED|
+                    -- ASSIGN  |PARTITIONED|
+                      -- STREAM_PROJECT  |PARTITIONED|
+                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                          -- DATASOURCE_SCAN (test.ds4)  |PARTITIONED|
+                            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                              -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
+                -- HASH_PARTITION_EXCHANGE [$$123]  |PARTITIONED|
+                  -- STREAM_PROJECT  |PARTITIONED|
+                    -- ASSIGN  |PARTITIONED|
+                      -- STREAM_PROJECT  |PARTITIONED|
+                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                          -- DATASOURCE_SCAN (test.ds3)  |PARTITIONED|
+                            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                              -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-07.plan b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-07.plan
new file mode 100644
index 0000000..1577585
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-07.plan
@@ -0,0 +1,24 @@
+-- DISTRIBUTE_RESULT  |PARTITIONED|
+  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+    -- STREAM_PROJECT  |PARTITIONED|
+      -- ASSIGN  |PARTITIONED|
+        -- SORT_MERGE_EXCHANGE [$$122(ASC), $$123(ASC) ]  |PARTITIONED|
+          -- STABLE_SORT [$$122(ASC), $$123(ASC)]  |PARTITIONED|
+            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+              -- HYBRID_HASH_JOIN [$$122][$$123]  |PARTITIONED|
+                -- HASH_PARTITION_EXCHANGE [$$122]  |PARTITIONED|
+                  -- STREAM_PROJECT  |PARTITIONED|
+                    -- ASSIGN  |PARTITIONED|
+                      -- STREAM_PROJECT  |PARTITIONED|
+                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                          -- DATASOURCE_SCAN (test.ds4)  |PARTITIONED|
+                            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                              -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
+                -- HASH_PARTITION_EXCHANGE [$$123]  |PARTITIONED|
+                  -- STREAM_PROJECT  |PARTITIONED|
+                    -- ASSIGN  |PARTITIONED|
+                      -- STREAM_PROJECT  |PARTITIONED|
+                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                          -- DATASOURCE_SCAN (test.ds1)  |PARTITIONED|
+                            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                              -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-08.plan b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-08.plan
new file mode 100644
index 0000000..1577585
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-08.plan
@@ -0,0 +1,24 @@
+-- DISTRIBUTE_RESULT  |PARTITIONED|
+  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+    -- STREAM_PROJECT  |PARTITIONED|
+      -- ASSIGN  |PARTITIONED|
+        -- SORT_MERGE_EXCHANGE [$$122(ASC), $$123(ASC) ]  |PARTITIONED|
+          -- STABLE_SORT [$$122(ASC), $$123(ASC)]  |PARTITIONED|
+            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+              -- HYBRID_HASH_JOIN [$$122][$$123]  |PARTITIONED|
+                -- HASH_PARTITION_EXCHANGE [$$122]  |PARTITIONED|
+                  -- STREAM_PROJECT  |PARTITIONED|
+                    -- ASSIGN  |PARTITIONED|
+                      -- STREAM_PROJECT  |PARTITIONED|
+                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                          -- DATASOURCE_SCAN (test.ds4)  |PARTITIONED|
+                            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                              -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
+                -- HASH_PARTITION_EXCHANGE [$$123]  |PARTITIONED|
+                  -- STREAM_PROJECT  |PARTITIONED|
+                    -- ASSIGN  |PARTITIONED|
+                      -- STREAM_PROJECT  |PARTITIONED|
+                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                          -- DATASOURCE_SCAN (test.ds1)  |PARTITIONED|
+                            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                              -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-09.plan b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-09.plan
new file mode 100644
index 0000000..d60ee1e
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-09.plan
@@ -0,0 +1,24 @@
+-- DISTRIBUTE_RESULT  |PARTITIONED|
+  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+    -- STREAM_PROJECT  |PARTITIONED|
+      -- ASSIGN  |PARTITIONED|
+        -- SORT_MERGE_EXCHANGE [$$84(ASC), $$85(ASC) ]  |PARTITIONED|
+          -- STABLE_SORT [$$84(ASC), $$85(ASC)]  |PARTITIONED|
+            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+              -- HYBRID_HASH_JOIN [$$84][$$85]  |PARTITIONED|
+                -- HASH_PARTITION_EXCHANGE [$$84]  |PARTITIONED|
+                  -- STREAM_PROJECT  |PARTITIONED|
+                    -- ASSIGN  |PARTITIONED|
+                      -- STREAM_PROJECT  |PARTITIONED|
+                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                          -- DATASOURCE_SCAN (test.ds4)  |PARTITIONED|
+                            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                              -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
+                -- HASH_PARTITION_EXCHANGE [$$85]  |PARTITIONED|
+                  -- STREAM_PROJECT  |PARTITIONED|
+                    -- ASSIGN  |PARTITIONED|
+                      -- STREAM_PROJECT  |PARTITIONED|
+                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                          -- DATASOURCE_SCAN (test.ds2)  |PARTITIONED|
+                            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                              -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-10.plan b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-10.plan
new file mode 100644
index 0000000..19fe8ce
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-10.plan
@@ -0,0 +1,23 @@
+-- DISTRIBUTE_RESULT  |PARTITIONED|
+  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+    -- STREAM_PROJECT  |PARTITIONED|
+      -- ASSIGN  |PARTITIONED|
+        -- SORT_MERGE_EXCHANGE [$$56(ASC) ]  |PARTITIONED|
+          -- STABLE_SORT [$$56(ASC)]  |PARTITIONED|
+            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+              -- STREAM_PROJECT  |PARTITIONED|
+                -- ASSIGN  |PARTITIONED|
+                  -- STREAM_SELECT  |PARTITIONED|
+                    -- STREAM_PROJECT  |PARTITIONED|
+                      -- ASSIGN  |PARTITIONED|
+                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                          -- BTREE_SEARCH (test.ds5.ds5)  |PARTITIONED|
+                            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                              -- STABLE_SORT [$$59(ASC)]  |PARTITIONED|
+                                -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                  -- STREAM_PROJECT  |PARTITIONED|
+                                    -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                      -- BTREE_SEARCH (test.ds5.idx5_dt_fmt)  |PARTITIONED|
+                                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                          -- ASSIGN  |PARTITIONED|
+                                            -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-11.plan b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-11.plan
new file mode 100644
index 0000000..b636106
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-11.plan
@@ -0,0 +1,23 @@
+-- DISTRIBUTE_RESULT  |PARTITIONED|
+  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+    -- STREAM_PROJECT  |PARTITIONED|
+      -- ASSIGN  |PARTITIONED|
+        -- SORT_MERGE_EXCHANGE [$$56(ASC) ]  |PARTITIONED|
+          -- STABLE_SORT [$$56(ASC)]  |PARTITIONED|
+            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+              -- STREAM_PROJECT  |PARTITIONED|
+                -- ASSIGN  |PARTITIONED|
+                  -- STREAM_SELECT  |PARTITIONED|
+                    -- STREAM_PROJECT  |PARTITIONED|
+                      -- ASSIGN  |PARTITIONED|
+                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                          -- BTREE_SEARCH (test.ds5.ds5)  |PARTITIONED|
+                            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                              -- STABLE_SORT [$$59(ASC)]  |PARTITIONED|
+                                -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                  -- STREAM_PROJECT  |PARTITIONED|
+                                    -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                      -- BTREE_SEARCH (test.ds5.idx5_d_fmt)  |PARTITIONED|
+                                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                          -- ASSIGN  |PARTITIONED|
+                                            -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-12.plan b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-12.plan
new file mode 100644
index 0000000..382c39a
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-12.plan
@@ -0,0 +1,23 @@
+-- DISTRIBUTE_RESULT  |PARTITIONED|
+  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+    -- STREAM_PROJECT  |PARTITIONED|
+      -- ASSIGN  |PARTITIONED|
+        -- SORT_MERGE_EXCHANGE [$$56(ASC) ]  |PARTITIONED|
+          -- STABLE_SORT [$$56(ASC)]  |PARTITIONED|
+            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+              -- STREAM_PROJECT  |PARTITIONED|
+                -- ASSIGN  |PARTITIONED|
+                  -- STREAM_SELECT  |PARTITIONED|
+                    -- STREAM_PROJECT  |PARTITIONED|
+                      -- ASSIGN  |PARTITIONED|
+                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                          -- BTREE_SEARCH (test.ds5.ds5)  |PARTITIONED|
+                            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                              -- STABLE_SORT [$$59(ASC)]  |PARTITIONED|
+                                -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                  -- STREAM_PROJECT  |PARTITIONED|
+                                    -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                      -- BTREE_SEARCH (test.ds5.idx5_t_fmt)  |PARTITIONED|
+                                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                          -- ASSIGN  |PARTITIONED|
+                                            -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-13.plan b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-13.plan
new file mode 100644
index 0000000..babda5c
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-13.plan
@@ -0,0 +1,23 @@
+-- DISTRIBUTE_RESULT  |PARTITIONED|
+  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+    -- STREAM_PROJECT  |PARTITIONED|
+      -- ASSIGN  |PARTITIONED|
+        -- SORT_MERGE_EXCHANGE [$$56(ASC) ]  |PARTITIONED|
+          -- STABLE_SORT [$$56(ASC)]  |PARTITIONED|
+            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+              -- STREAM_PROJECT  |PARTITIONED|
+                -- ASSIGN  |PARTITIONED|
+                  -- STREAM_SELECT  |PARTITIONED|
+                    -- STREAM_PROJECT  |PARTITIONED|
+                      -- ASSIGN  |PARTITIONED|
+                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                          -- BTREE_SEARCH (test.ds6.ds6)  |PARTITIONED|
+                            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                              -- STABLE_SORT [$$59(ASC)]  |PARTITIONED|
+                                -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                  -- STREAM_PROJECT  |PARTITIONED|
+                                    -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                      -- BTREE_SEARCH (test.ds6.idx6_dt)  |PARTITIONED|
+                                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                          -- ASSIGN  |PARTITIONED|
+                                            -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-14.plan b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-14.plan
new file mode 100644
index 0000000..d55a9a2
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-14.plan
@@ -0,0 +1,23 @@
+-- DISTRIBUTE_RESULT  |PARTITIONED|
+  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+    -- STREAM_PROJECT  |PARTITIONED|
+      -- ASSIGN  |PARTITIONED|
+        -- SORT_MERGE_EXCHANGE [$$56(ASC) ]  |PARTITIONED|
+          -- STABLE_SORT [$$56(ASC)]  |PARTITIONED|
+            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+              -- STREAM_PROJECT  |PARTITIONED|
+                -- ASSIGN  |PARTITIONED|
+                  -- STREAM_SELECT  |PARTITIONED|
+                    -- STREAM_PROJECT  |PARTITIONED|
+                      -- ASSIGN  |PARTITIONED|
+                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                          -- BTREE_SEARCH (test.ds6.ds6)  |PARTITIONED|
+                            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                              -- STABLE_SORT [$$59(ASC)]  |PARTITIONED|
+                                -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                  -- STREAM_PROJECT  |PARTITIONED|
+                                    -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                      -- BTREE_SEARCH (test.ds6.idx6_d)  |PARTITIONED|
+                                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                          -- ASSIGN  |PARTITIONED|
+                                            -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-15.plan b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-15.plan
new file mode 100644
index 0000000..2799b48
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-15.plan
@@ -0,0 +1,23 @@
+-- DISTRIBUTE_RESULT  |PARTITIONED|
+  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+    -- STREAM_PROJECT  |PARTITIONED|
+      -- ASSIGN  |PARTITIONED|
+        -- SORT_MERGE_EXCHANGE [$$56(ASC) ]  |PARTITIONED|
+          -- STABLE_SORT [$$56(ASC)]  |PARTITIONED|
+            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+              -- STREAM_PROJECT  |PARTITIONED|
+                -- ASSIGN  |PARTITIONED|
+                  -- STREAM_SELECT  |PARTITIONED|
+                    -- STREAM_PROJECT  |PARTITIONED|
+                      -- ASSIGN  |PARTITIONED|
+                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                          -- BTREE_SEARCH (test.ds6.ds6)  |PARTITIONED|
+                            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                              -- STABLE_SORT [$$59(ASC)]  |PARTITIONED|
+                                -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                  -- STREAM_PROJECT  |PARTITIONED|
+                                    -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                      -- BTREE_SEARCH (test.ds6.idx6_t)  |PARTITIONED|
+                                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                          -- ASSIGN  |PARTITIONED|
+                                            -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-16.plan b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-16.plan
new file mode 100644
index 0000000..6291577
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-16.plan
@@ -0,0 +1,16 @@
+-- DISTRIBUTE_RESULT  |PARTITIONED|
+  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+    -- STREAM_PROJECT  |PARTITIONED|
+      -- ASSIGN  |PARTITIONED|
+        -- SORT_MERGE_EXCHANGE [$$56(ASC) ]  |PARTITIONED|
+          -- STABLE_SORT [$$56(ASC)]  |PARTITIONED|
+            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+              -- STREAM_PROJECT  |PARTITIONED|
+                -- ASSIGN  |PARTITIONED|
+                  -- STREAM_SELECT  |PARTITIONED|
+                    -- STREAM_PROJECT  |PARTITIONED|
+                      -- ASSIGN  |PARTITIONED|
+                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                          -- DATASOURCE_SCAN (test.ds5)  |PARTITIONED|
+                            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                              -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-17.plan b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-17.plan
new file mode 100644
index 0000000..8757f3e
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-17.plan
@@ -0,0 +1,16 @@
+-- DISTRIBUTE_RESULT  |PARTITIONED|
+  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+    -- STREAM_PROJECT  |PARTITIONED|
+      -- ASSIGN  |PARTITIONED|
+        -- SORT_MERGE_EXCHANGE [$$56(ASC) ]  |PARTITIONED|
+          -- STABLE_SORT [$$56(ASC)]  |PARTITIONED|
+            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+              -- STREAM_PROJECT  |PARTITIONED|
+                -- ASSIGN  |PARTITIONED|
+                  -- STREAM_SELECT  |PARTITIONED|
+                    -- STREAM_PROJECT  |PARTITIONED|
+                      -- ASSIGN  |PARTITIONED|
+                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                          -- DATASOURCE_SCAN (test.ds6)  |PARTITIONED|
+                            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                              -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-18.plan b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-18.plan
new file mode 100644
index 0000000..6291577
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-18.plan
@@ -0,0 +1,16 @@
+-- DISTRIBUTE_RESULT  |PARTITIONED|
+  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+    -- STREAM_PROJECT  |PARTITIONED|
+      -- ASSIGN  |PARTITIONED|
+        -- SORT_MERGE_EXCHANGE [$$56(ASC) ]  |PARTITIONED|
+          -- STABLE_SORT [$$56(ASC)]  |PARTITIONED|
+            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+              -- STREAM_PROJECT  |PARTITIONED|
+                -- ASSIGN  |PARTITIONED|
+                  -- STREAM_SELECT  |PARTITIONED|
+                    -- STREAM_PROJECT  |PARTITIONED|
+                      -- ASSIGN  |PARTITIONED|
+                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                          -- DATASOURCE_SCAN (test.ds5)  |PARTITIONED|
+                            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                              -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-19.plan b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-19.plan
new file mode 100644
index 0000000..cb86b13
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-19.plan
@@ -0,0 +1,27 @@
+-- DISTRIBUTE_RESULT  |PARTITIONED|
+  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+    -- STREAM_PROJECT  |PARTITIONED|
+      -- ASSIGN  |PARTITIONED|
+        -- SORT_MERGE_EXCHANGE [$$110(ASC), $$111(ASC) ]  |PARTITIONED|
+          -- STABLE_SORT [$$110(ASC), $$111(ASC)]  |PARTITIONED|
+            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+              -- STREAM_SELECT  |PARTITIONED|
+                -- STREAM_PROJECT  |PARTITIONED|
+                  -- ASSIGN  |PARTITIONED|
+                    -- STREAM_PROJECT  |PARTITIONED|
+                      -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                        -- BTREE_SEARCH (test.ds5.ds5)  |PARTITIONED|
+                          -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                            -- STABLE_SORT [$$123(ASC)]  |PARTITIONED|
+                              -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                -- STREAM_PROJECT  |PARTITIONED|
+                                  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                    -- BTREE_SEARCH (test.ds5.idx5_dt_fmt)  |PARTITIONED|
+                                      -- BROADCAST_EXCHANGE  |PARTITIONED|
+                                        -- STREAM_PROJECT  |PARTITIONED|
+                                          -- ASSIGN  |PARTITIONED|
+                                            -- STREAM_PROJECT  |PARTITIONED|
+                                              -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                                -- DATASOURCE_SCAN (test.ds6)  |PARTITIONED|
+                                                  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                                    -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-20.plan b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-20.plan
new file mode 100644
index 0000000..885b6ba
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-20.plan
@@ -0,0 +1,23 @@
+-- DISTRIBUTE_RESULT  |PARTITIONED|
+  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+    -- STREAM_PROJECT  |PARTITIONED|
+      -- ASSIGN  |PARTITIONED|
+        -- SORT_MERGE_EXCHANGE [$$65(ASC) ]  |PARTITIONED|
+          -- STABLE_SORT [$$65(ASC)]  |PARTITIONED|
+            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+              -- STREAM_PROJECT  |PARTITIONED|
+                -- ASSIGN  |PARTITIONED|
+                  -- STREAM_SELECT  |PARTITIONED|
+                    -- STREAM_PROJECT  |PARTITIONED|
+                      -- ASSIGN  |PARTITIONED|
+                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                          -- BTREE_SEARCH (test.ds7.ds7)  |PARTITIONED|
+                            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                              -- STABLE_SORT [$$70(ASC)]  |PARTITIONED|
+                                -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                  -- STREAM_PROJECT  |PARTITIONED|
+                                    -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                      -- BTREE_SEARCH (test.ds7.idx2)  |PARTITIONED|
+                                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                          -- ASSIGN  |PARTITIONED|
+                                            -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-21.plan b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-21.plan
new file mode 100644
index 0000000..a560c7f
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-21.plan
@@ -0,0 +1,16 @@
+-- DISTRIBUTE_RESULT  |PARTITIONED|
+  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+    -- STREAM_PROJECT  |PARTITIONED|
+      -- ASSIGN  |PARTITIONED|
+        -- SORT_MERGE_EXCHANGE [$$65(ASC) ]  |PARTITIONED|
+          -- STABLE_SORT [$$65(ASC)]  |PARTITIONED|
+            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+              -- STREAM_PROJECT  |PARTITIONED|
+                -- ASSIGN  |PARTITIONED|
+                  -- STREAM_SELECT  |PARTITIONED|
+                    -- STREAM_PROJECT  |PARTITIONED|
+                      -- ASSIGN  |PARTITIONED|
+                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                          -- DATASOURCE_SCAN (test.ds7)  |PARTITIONED|
+                            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                              -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-22.plan b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-22.plan
new file mode 100644
index 0000000..a560c7f
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-22.plan
@@ -0,0 +1,16 @@
+-- DISTRIBUTE_RESULT  |PARTITIONED|
+  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+    -- STREAM_PROJECT  |PARTITIONED|
+      -- ASSIGN  |PARTITIONED|
+        -- SORT_MERGE_EXCHANGE [$$65(ASC) ]  |PARTITIONED|
+          -- STABLE_SORT [$$65(ASC)]  |PARTITIONED|
+            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+              -- STREAM_PROJECT  |PARTITIONED|
+                -- ASSIGN  |PARTITIONED|
+                  -- STREAM_SELECT  |PARTITIONED|
+                    -- STREAM_PROJECT  |PARTITIONED|
+                      -- ASSIGN  |PARTITIONED|
+                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                          -- DATASOURCE_SCAN (test.ds7)  |PARTITIONED|
+                            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                              -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-23.plan b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-23.plan
new file mode 100644
index 0000000..88537b6
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-23.plan
@@ -0,0 +1,23 @@
+-- DISTRIBUTE_RESULT  |PARTITIONED|
+  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+    -- STREAM_PROJECT  |PARTITIONED|
+      -- ASSIGN  |PARTITIONED|
+        -- SORT_MERGE_EXCHANGE [$$65(ASC) ]  |PARTITIONED|
+          -- STABLE_SORT [$$65(ASC)]  |PARTITIONED|
+            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+              -- STREAM_PROJECT  |PARTITIONED|
+                -- ASSIGN  |PARTITIONED|
+                  -- STREAM_SELECT  |PARTITIONED|
+                    -- STREAM_PROJECT  |PARTITIONED|
+                      -- ASSIGN  |PARTITIONED|
+                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                          -- BTREE_SEARCH (test.ds7.ds7)  |PARTITIONED|
+                            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                              -- STABLE_SORT [$$70(ASC)]  |PARTITIONED|
+                                -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                  -- STREAM_PROJECT  |PARTITIONED|
+                                    -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                      -- BTREE_SEARCH (test.ds7.idx3)  |PARTITIONED|
+                                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                          -- ASSIGN  |PARTITIONED|
+                                            -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-24.plan b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-24.plan
new file mode 100644
index 0000000..85d3144
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null-correlated/cast-default-null-correlated-24.plan
@@ -0,0 +1,19 @@
+-- DISTRIBUTE_RESULT  |PARTITIONED|
+  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+    -- STREAM_PROJECT  |PARTITIONED|
+      -- ASSIGN  |PARTITIONED|
+        -- SORT_MERGE_EXCHANGE [$$20(ASC) ]  |PARTITIONED|
+          -- STREAM_SELECT  |PARTITIONED|
+            -- STREAM_PROJECT  |PARTITIONED|
+              -- ASSIGN  |PARTITIONED|
+                -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                  -- BTREE_SEARCH (test.ds7.ds7)  |PARTITIONED|
+                    -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                      -- STABLE_SORT [$$25(ASC)]  |PARTITIONED|
+                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                          -- STREAM_PROJECT  |PARTITIONED|
+                            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                              -- BTREE_SEARCH (test.ds7.idx1)  |PARTITIONED|
+                                -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                  -- ASSIGN  |PARTITIONED|
+                                    -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.000.ddl.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.000.ddl.sqlpp
new file mode 100644
index 0000000..2b2b1e5
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.000.ddl.sqlpp
@@ -0,0 +1,67 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+/*
+ * Description  : test that CAST (DEFAULT NULL) casts to the target type such that NULL is produced for invalid input
+ */
+
+DROP DATAVERSE test IF EXISTS;
+CREATE DATAVERSE test;
+USE test;
+CREATE TYPE t1 AS { id: int, s_f: string, d_f: double, i_f: int, b_f: boolean };
+CREATE TYPE t2 AS { id: int, s_f1: string, s_f2: string?, i_f: int? };
+CREATE DATASET ds1(t1) PRIMARY KEY id WITH {"merge-policy": {"name": "correlated-prefix","parameters": { "max-mergable-component-size": 16384, "max-tolerance-component-count": 3 }}};
+CREATE DATASET ds2(t1) PRIMARY KEY id WITH {"merge-policy": {"name": "correlated-prefix","parameters": { "max-mergable-component-size": 16384, "max-tolerance-component-count": 3 }}};
+CREATE DATASET ds3(id int not unknown) OPEN TYPE PRIMARY KEY id WITH {"merge-policy": {"name": "correlated-prefix","parameters": { "max-mergable-component-size": 16384, "max-tolerance-component-count": 3 }}};
+CREATE DATASET ds4(id int not unknown) OPEN TYPE PRIMARY KEY id WITH {"merge-policy": {"name": "correlated-prefix","parameters": { "max-mergable-component-size": 16384, "max-tolerance-component-count": 3 }}};
+CREATE DATASET ds5(t2) PRIMARY KEY id WITH {"merge-policy": {"name": "correlated-prefix","parameters": { "max-mergable-component-size": 16384, "max-tolerance-component-count": 3 }}};
+
+CREATE INDEX ds2_o_idx1 ON ds2(o_s_f: int, o_i_f: string) INCLUDE UNKNOWN KEY CAST (DEFAULT NULL);
+CREATE INDEX ds2_o_idx2 ON ds2(o_s_f: double, o_d_f: string) CAST (DEFAULT NULL);
+
+CREATE INDEX ds2_o_idx4 ON ds2(a.s_f: int) CAST (DEFAULT NULL);
+
+CREATE INDEX ds2_o_idx5 ON ds2(a.any_f: int) CAST (DEFAULT NULL);
+CREATE INDEX ds2_o_idx6 ON ds2(a.any_f: string) CAST (DEFAULT NULL);
+CREATE INDEX ds2_o_idx7 ON ds2(a.any_f: double) CAST (DEFAULT NULL);
+
+// temporal
+CREATE INDEX ds3_o_idx_f_dt ON ds3(f_dt: datetime) CAST (DEFAULT NULL);
+CREATE INDEX ds3_o_idx_f_d ON ds3(f_d: date) CAST (DEFAULT NULL);
+CREATE INDEX ds3_o_idx_f_t ON ds3(f_t: time) CAST (DEFAULT NULL);
+
+// temporal with format
+CREATE INDEX ds3_o_idx_f_dt_fmt ON ds3(f_dt_fmt: datetime) CAST (DEFAULT NULL datetime 'MM/DD/YYYY hh:mm:ss.nnna');
+CREATE INDEX ds3_o_idx_f_d_fmt ON ds3(f_d_fmt: date) CAST (DEFAULT NULL date 'MM/DD/YYYY');
+CREATE INDEX ds3_o_idx_f_t_fmt ON ds3(f_t_fmt: time) CAST (DEFAULT NULL time 'hh:mm:ss.nnna');
+
+CREATE INDEX ds3_o_idx_invalid_fmt ON ds3(f_d_fmt: date) CAST (DEFAULT NULL date 'invalid_format');
+
+// on closed fields
+CREATE INDEX idx1 ON ds5(s_f1);
+CREATE INDEX idx2 ON ds5(s_f1: string) CAST (DEFAULT NULL);
+CREATE INDEX idx3 ON ds5(s_f1: int) CAST (DEFAULT NULL);
+
+CREATE INDEX idx4 ON ds5(s_f2);
+CREATE INDEX idx5 ON ds5(s_f2: string) CAST (DEFAULT NULL);
+CREATE INDEX idx6 ON ds5(s_f2: int) CAST (DEFAULT NULL);
+
+CREATE INDEX idx7 ON ds5(i_f: int) CAST (DEFAULT NULL);
+CREATE INDEX idx8 ON ds5(i_f: string) CAST (DEFAULT NULL);
+
+CREATE INDEX idx_exc1 ON ds5(s_f2: int) EXCLUDE UNKNOWN KEY CAST (DEFAULT NULL);
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.001.update.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.001.update.sqlpp
new file mode 100644
index 0000000..fac0b31
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.001.update.sqlpp
@@ -0,0 +1,72 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+INSERT INTO ds1 [
+{"id": 1, "s_f": "s",     "d_f": 1.5, "i_f": 1, "b_f": true,  "o_s_f": "s",     "o_d_f": 1.5, "o_i_f": 1, "o_b_f": true,  "a": {"s_f": "s",     "any_f": 1}},
+{"id": 2, "s_f": "2",     "d_f": 2.5, "i_f": 2, "b_f": false, "o_s_f": "2",     "o_d_f": 2.5, "o_i_f": 2, "o_b_f": false, "a": {"s_f": "2",     "any_f": 1.5}},
+{"id": 3, "s_f": "3.5",   "d_f": 3.5, "i_f": 3, "b_f": true,  "o_s_f": "3.5",   "o_d_f": 3.5, "o_i_f": 3, "o_b_f": true,  "a": {"s_f": "3.5",   "any_f": "1"}},
+{"id": 4, "s_f": "true",  "d_f": 4.5, "i_f": 4, "b_f": false, "o_s_f": "true",  "o_d_f": 4.5, "o_i_f": 4, "o_b_f": false, "a": {"s_f": "true",  "any_f": "1.5"}},
+{"id": 5, "s_f": "false", "d_f": 5.5, "i_f": 5, "b_f": false, "o_s_f": "false", "o_d_f": 5.5, "o_i_f": 5, "o_b_f": false, "a": {"s_f": "false", "any_f": "str"}},
+{"id": 6, "s_f": "6",     "d_f": 6.5, "i_f": 6, "b_f": false, "o_s_f": "6",     "o_d_f": 6.5, "o_i_f": 6, "o_b_f": false, "a": {"s_f": "6",     "any_f": true}},
+{"id": 7, "s_f": "7.5",   "d_f": 7.5, "i_f": 7, "b_f": false, "o_s_f": "7.5",   "o_d_f": 7.5, "o_i_f": 7, "o_b_f": false, "a": {"s_f": "7.5",   "any_f": false}},
+{"id": 8, "s_f": "false", "d_f": 8.5, "i_f": 8, "b_f": false, "o_s_f": "false", "o_d_f": 8.5, "o_i_f": 8, "o_b_f": false, "a": {"s_f": "false", "any_f": [1,2]}},
+{"id": 9, "s_f": "false", "d_f": 9.5, "i_f": 9, "b_f": false}
+];
+
+INSERT INTO ds2 [
+{"id": 1, "s_f": "s",     "d_f": 1.5, "i_f": 1, "b_f": true,  "o_s_f": "s",     "o_d_f": 1.5, "o_i_f": 1, "o_b_f": true,  "a": {"s_f": "s",     "any_f": 1}},
+{"id": 2, "s_f": "2",     "d_f": 2.5, "i_f": 2, "b_f": false, "o_s_f": "2",     "o_d_f": 2.5, "o_i_f": 2, "o_b_f": false, "a": {"s_f": "2",     "any_f": 1.5}},
+{"id": 3, "s_f": "3.5",   "d_f": 3.5, "i_f": 3, "b_f": true,  "o_s_f": "3.5",   "o_d_f": 3.5, "o_i_f": 3, "o_b_f": true,  "a": {"s_f": "3.5",   "any_f": "1"}},
+{"id": 4, "s_f": "true",  "d_f": 4.5, "i_f": 4, "b_f": false, "o_s_f": "true",  "o_d_f": 4.5, "o_i_f": 4, "o_b_f": false, "a": {"s_f": "true",  "any_f": "1.5"}},
+{"id": 5, "s_f": "false", "d_f": 5.5, "i_f": 5, "b_f": false, "o_s_f": "false", "o_d_f": 5.5, "o_i_f": 5, "o_b_f": false, "a": {"s_f": "false", "any_f": "str"}},
+{"id": 6, "s_f": "6",     "d_f": 6.5, "i_f": 6, "b_f": false, "o_s_f": "6",     "o_d_f": 6.5, "o_i_f": 6, "o_b_f": false, "a": {"s_f": "6",     "any_f": true}},
+{"id": 7, "s_f": "7.5",   "d_f": 7.5, "i_f": 7, "b_f": false, "o_s_f": "7.5",   "o_d_f": 7.5, "o_i_f": 7, "o_b_f": false, "a": {"s_f": "7.5",   "any_f": false}},
+{"id": 8, "s_f": "false", "d_f": 8.5, "i_f": 8, "b_f": false, "o_s_f": "false", "o_d_f": 8.5, "o_i_f": 8, "o_b_f": false, "a": {"s_f": "false", "any_f": [1,2]}},
+{"id": 9, "s_f": "false", "d_f": 9.5, "i_f": 9, "b_f": false}
+];
+
+INSERT INTO ds3 [
+{"id": 1, 'f_dt':'2020-02-20T01:40:41.001', 'f_d':'2020-02-20', 'f_t':'01:40:41.001', 'f_dt_fmt':'02/20/2020 01:40:41.001am', 'f_d_fmt':'02/20/2020', 'f_t_fmt':'01:40:41.001am'},
+{"id": 2, 'f_dt':'2021-11-25T22:12:51.999', 'f_d':'2021-11-25', 'f_t':'22:12:51.999', 'f_dt_fmt':'11/25/2021 10:12:51.999pm', 'f_d_fmt':'11/25/2021', 'f_t_fmt':'10:12:51.999pm'},
+/* Invalid value */
+{"id": 3, 'f_dt':'a', 'f_d':'b', 'f_t':'c', 'f_dt_fmt':'a', 'c_date':'b', 'f_t_fmt':'c'},
+{"id": 4, 'f_dt':'2019-01-20T14:40:41.001', 'f_d':'2019-01-20', 'f_t':'14:40:41.001', 'f_dt_fmt':'01/20/2019 02:40:41.001pm', 'f_d_fmt':'01/20/2019', 'f_t_fmt':'02:40:41.001pm'},
+{"id": 5, 'f_dt':null, 'f_d':null, 'f_t':null, 'f_dt_fmt':null, 'f_d_fmt':null, 'f_t_fmt':null},
+{"id": 6}
+];
+
+INSERT INTO ds4 [
+{"id": 1, 'f_dt':'2020-02-20T01:40:41.001', 'f_d':'2020-02-20', 'f_t':'01:40:41.001', 'f_dt_fmt':'02/20/2020 01:40:41.001am', 'f_d_fmt':'02/20/2020', 'f_t_fmt':'01:40:41.001am'},
+{"id": 2, 'f_dt':'2021-11-25T22:12:51.999', 'f_d':'2021-11-25', 'f_t':'22:12:51.999', 'f_dt_fmt':'11/25/2021 10:12:51.999pm', 'f_d_fmt':'11/25/2021', 'f_t_fmt':'10:12:51.999pm'},
+/* Invalid value */
+{"id": 3, 'f_dt':'a', 'f_d':'b', 'f_t':'c', 'f_dt_fmt':'a', 'c_date':'b', 'f_t_fmt':'c'},
+{"id": 4, 'f_dt':'2019-01-20T14:40:41.001', 'f_d':'2019-01-20', 'f_t':'14:40:41.001', 'f_dt_fmt':'01/20/2019 02:40:41.001pm', 'f_d_fmt':'01/20/2019', 'f_t_fmt':'02:40:41.001pm'},
+{"id": 5, 'f_dt':null, 'f_d':null, 'f_t':null, 'f_dt_fmt':null, 'f_d_fmt':null, 'f_t_fmt':null},
+{"id": 6}
+];
+
+INSERT INTO ds5 [
+{"id": 1, "s_f1": "s",   "s_f2": "s",   "i_f": 1 },
+{"id": 2, "s_f1": "2",   "s_f2": "2",   "i_f": 2 },
+{"id": 3, "s_f1": "3.5", "s_f2": "3.5", "i_f": 3 },
+{"id": 4, "s_f1": "4",   "s_f2": "4",   "i_f": 4 },
+{"id": 5, "s_f1": "5",   "s_f2": null,   "i_f": null },
+{"id": 6, "s_f1": "" }
+];
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.002.ddl.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.002.ddl.sqlpp
new file mode 100644
index 0000000..8ddbebc
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.002.ddl.sqlpp
@@ -0,0 +1,58 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+/*
+ * Description  : tests the bulk load path of CREATE INDEX
+ */
+
+USE test;
+
+CREATE INDEX ds1_o_idx1 ON ds1(o_s_f: int, o_i_f: string) INCLUDE UNKNOWN KEY CAST(DEFAULT NULL);
+CREATE INDEX ds1_o_idx2 ON ds1(o_s_f: double, o_d_f: string) CAST(DEFAULT NULL);
+
+CREATE INDEX ds1_o_idx4 ON ds1(a.s_f: int) CAST(DEFAULT NULL);
+
+CREATE INDEX ds1_o_idx5 ON ds1(a.any_f: int) CAST(DEFAULT NULL);
+CREATE INDEX ds1_o_idx6 ON ds1(a.any_f: string) CAST(DEFAULT NULL);
+CREATE INDEX ds1_o_idx7 ON ds1(a.any_f: double) CAST(DEFAULT NULL);
+
+// temporal
+CREATE INDEX ds4_o_idx_f_dt ON ds4(f_dt: datetime) CAST (DEFAULT NULL);
+CREATE INDEX ds4_o_idx_f_d ON ds4(f_d: date) CAST (DEFAULT NULL);
+CREATE INDEX ds4_o_idx_f_t ON ds4(f_t: time) CAST (DEFAULT NULL);
+
+// temporal with format
+CREATE INDEX ds4_o_idx_f_dt_fmt ON ds4(f_dt_fmt: datetime) CAST (DEFAULT NULL datetime 'MM/DD/YYYY hh:mm:ss.nnna');
+CREATE INDEX ds4_o_idx_f_d_fmt ON ds4(f_d_fmt: date) CAST (DEFAULT NULL date 'MM/DD/YYYY');
+CREATE INDEX ds4_o_idx_f_t_fmt ON ds4(f_t_fmt: time) CAST (DEFAULT NULL time 'hh:mm:ss.nnna');
+
+CREATE INDEX ds4_o_idx_invalid_fmt ON ds4(f_d_fmt: date) CAST (DEFAULT NULL date 'invalid_format');
+
+// on closed fields
+CREATE INDEX idx9 ON ds5(s_f1);
+CREATE INDEX idx10 ON ds5(s_f1: string) CAST (DEFAULT NULL);
+CREATE INDEX idx11 ON ds5(s_f1: int) CAST (DEFAULT NULL);
+
+CREATE INDEX idx12 ON ds5(s_f2);
+CREATE INDEX idx13 ON ds5(s_f2: string) CAST (DEFAULT NULL);
+CREATE INDEX idx14 ON ds5(s_f2: int) CAST (DEFAULT NULL);
+
+CREATE INDEX idx15 ON ds5(i_f: int) CAST (DEFAULT NULL);
+CREATE INDEX idx16 ON ds5(i_f: string) CAST (DEFAULT NULL);
+
+CREATE INDEX idx_exc2 ON ds5(s_f2: int) EXCLUDE UNKNOWN KEY CAST (DEFAULT NULL);
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.003.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.003.query.sqlpp
new file mode 100644
index 0000000..3106b2f
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.003.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds2", "ds2_o_idx1") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.004.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.004.query.sqlpp
new file mode 100644
index 0000000..31e5fcd
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.004.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds2", "ds2_o_idx2") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.005.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.005.query.sqlpp
new file mode 100644
index 0000000..1dee7d4
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.005.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds2", "ds2_o_idx4") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.006.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.006.query.sqlpp
new file mode 100644
index 0000000..6401d91
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.006.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds2", "ds2_o_idx5") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.007.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.007.query.sqlpp
new file mode 100644
index 0000000..12cc91f
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.007.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds2", "ds2_o_idx6") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.008.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.008.query.sqlpp
new file mode 100644
index 0000000..ee605f3
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.008.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds2", "ds2_o_idx7") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.009.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.009.query.sqlpp
new file mode 100644
index 0000000..7f0ddee
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.009.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds1", "ds1_o_idx1") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.010.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.010.query.sqlpp
new file mode 100644
index 0000000..afa0afa
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.010.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds1", "ds1_o_idx2") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.011.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.011.query.sqlpp
new file mode 100644
index 0000000..db14e84
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.011.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds1", "ds1_o_idx4") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.012.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.012.query.sqlpp
new file mode 100644
index 0000000..d7d6246
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.012.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds1", "ds1_o_idx5") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.013.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.013.query.sqlpp
new file mode 100644
index 0000000..c072a76
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.013.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds1", "ds1_o_idx6") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.014.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.014.query.sqlpp
new file mode 100644
index 0000000..086720b
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.014.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds1", "ds1_o_idx7") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.015.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.015.query.sqlpp
new file mode 100644
index 0000000..e3c5f25
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.015.query.sqlpp
@@ -0,0 +1,22 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+// check the index metadata
+USE test;
+
+FROM Metadata.`Index` v WHERE v.DatasetName = 'ds2' AND v.IndexName = 'ds2_o_idx2' SELECT VALUE v;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.016.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.016.query.sqlpp
new file mode 100644
index 0000000..8881cb6
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.016.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds3", "ds3_o_idx_f_d_fmt") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.017.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.017.query.sqlpp
new file mode 100644
index 0000000..558f3b4
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.017.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds3", "ds3_o_idx_f_t_fmt") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.018.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.018.query.sqlpp
new file mode 100644
index 0000000..bf99064
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.018.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds3", "ds3_o_idx_f_dt_fmt") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.019.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.019.query.sqlpp
new file mode 100644
index 0000000..c37d984
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.019.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds3", "ds3_o_idx_f_d") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.020.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.020.query.sqlpp
new file mode 100644
index 0000000..e901b04
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.020.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds3", "ds3_o_idx_f_t") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.021.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.021.query.sqlpp
new file mode 100644
index 0000000..151d016
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.021.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds3", "ds3_o_idx_f_dt") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.022.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.022.query.sqlpp
new file mode 100644
index 0000000..3fcff2d
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.022.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds3", "ds3_o_idx_invalid_fmt") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.023.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.023.query.sqlpp
new file mode 100644
index 0000000..2c6339d
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.023.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds4", "ds4_o_idx_f_d_fmt") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.024.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.024.query.sqlpp
new file mode 100644
index 0000000..be5e2ee
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.024.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds4", "ds4_o_idx_f_t_fmt") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.025.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.025.query.sqlpp
new file mode 100644
index 0000000..99551de
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.025.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds4", "ds4_o_idx_f_dt_fmt") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.026.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.026.query.sqlpp
new file mode 100644
index 0000000..7f407ca
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.026.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds4", "ds4_o_idx_f_d") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.027.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.027.query.sqlpp
new file mode 100644
index 0000000..d75187f
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.027.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds4", "ds4_o_idx_f_t") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.028.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.028.query.sqlpp
new file mode 100644
index 0000000..6f2eb21
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.028.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds4", "ds4_o_idx_f_dt") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.029.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.029.query.sqlpp
new file mode 100644
index 0000000..e4d5557
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.029.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds4", "ds4_o_idx_invalid_fmt") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.030.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.030.query.sqlpp
new file mode 100644
index 0000000..aeaffe8
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.030.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+// check the index metadata
+USE test;
+
+FROM Metadata.`Index` v
+WHERE v.DatasetName = 'ds3' AND v.IsPrimary = false
+SELECT v.IndexName, v.`Cast`
+ORDER BY v.IndexName;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.031.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.031.query.sqlpp
new file mode 100644
index 0000000..437de9c
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.031.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+// check the index metadata
+USE test;
+
+FROM Metadata.`Index` v
+WHERE v.DatasetName = 'ds4' AND v.IsPrimary = false
+SELECT v.IndexName, v.`Cast`
+ORDER BY v.IndexName;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.032.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.032.query.sqlpp
new file mode 100644
index 0000000..13b56e6
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.032.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds5", "idx1") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.033.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.033.query.sqlpp
new file mode 100644
index 0000000..4e3ea15
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.033.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds5", "idx2") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.034.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.034.query.sqlpp
new file mode 100644
index 0000000..43bd912
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.034.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds5", "idx3") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.035.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.035.query.sqlpp
new file mode 100644
index 0000000..3129e17
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.035.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds5", "idx4") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.036.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.036.query.sqlpp
new file mode 100644
index 0000000..7dac7ba
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.036.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds5", "idx5") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.037.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.037.query.sqlpp
new file mode 100644
index 0000000..442e4c8
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.037.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds5", "idx6") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.038.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.038.query.sqlpp
new file mode 100644
index 0000000..0e16524
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.038.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds5", "idx7") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.039.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.039.query.sqlpp
new file mode 100644
index 0000000..73bcd31
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.039.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds5", "idx8") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.040.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.040.query.sqlpp
new file mode 100644
index 0000000..b8683cd
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.040.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds5", "idx9") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.041.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.041.query.sqlpp
new file mode 100644
index 0000000..a694667
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.041.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds5", "idx10") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.042.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.042.query.sqlpp
new file mode 100644
index 0000000..ba593c5
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.042.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds5", "idx11") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.043.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.043.query.sqlpp
new file mode 100644
index 0000000..c5931ab
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.043.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds5", "idx12") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.044.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.044.query.sqlpp
new file mode 100644
index 0000000..d168fb3
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.044.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds5", "idx13") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.045.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.045.query.sqlpp
new file mode 100644
index 0000000..090b384
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.045.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds5", "idx14") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.046.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.046.query.sqlpp
new file mode 100644
index 0000000..1d66487
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.046.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds5", "idx15") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.047.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.047.query.sqlpp
new file mode 100644
index 0000000..b6455d1
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.047.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds5", "idx16") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.048.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.048.query.sqlpp
new file mode 100644
index 0000000..e551576
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.048.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds5", "idx_exc1") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.049.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.049.query.sqlpp
new file mode 100644
index 0000000..6046ab4
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.049.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SET `import-private-functions` `true`;
+FROM DUMP_INDEX("test", "ds5", "idx_exc2") AS v
+SELECT VALUE v
+ORDER BY v.values;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.050.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.050.query.sqlpp
new file mode 100644
index 0000000..cc547f8
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.050.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+FROM Metadata.`Index` v
+WHERE v.DatasetName = 'ds5' AND v.IsPrimary = false
+SELECT v.IndexName, v.SearchKey, v.SearchKeyType, v.`Cast`
+ORDER BY v.IndexName;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.999.ddl.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.999.ddl.sqlpp
new file mode 100644
index 0000000..86a1b59
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/ddl/index-cast-null-correlated/index-cast-null-correlated.999.ddl.sqlpp
@@ -0,0 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+DROP DATAVERSE test;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.01.ddl.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.01.ddl.sqlpp
new file mode 100644
index 0000000..89325d7
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.01.ddl.sqlpp
@@ -0,0 +1,69 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+DROP DATAVERSE test IF EXISTS;
+CREATE DATAVERSE test;
+USE test;
+
+CREATE TYPE t1 AS { id: int, s_f1: string, s_f2: string?, i_f: int? };
+
+CREATE DATASET ds1(id int not unknown, a string, b int) OPEN TYPE PRIMARY KEY id WITH {"merge-policy": {"name": "correlated-prefix","parameters": { "max-mergable-component-size": 16384, "max-tolerance-component-count": 3 }}};
+CREATE DATASET ds2(id int not unknown, a string, b int) OPEN TYPE PRIMARY KEY id WITH {"merge-policy": {"name": "correlated-prefix","parameters": { "max-mergable-component-size": 16384, "max-tolerance-component-count": 3 }}};
+CREATE DATASET ds3(id int not unknown, a string, b int) OPEN TYPE PRIMARY KEY id WITH {"merge-policy": {"name": "correlated-prefix","parameters": { "max-mergable-component-size": 16384, "max-tolerance-component-count": 3 }}};
+CREATE DATASET ds4(id int not unknown, a string, b int) OPEN TYPE PRIMARY KEY id WITH {"merge-policy": {"name": "correlated-prefix","parameters": { "max-mergable-component-size": 16384, "max-tolerance-component-count": 3 }}};
+CREATE DATASET ds5(id int not unknown) OPEN TYPE PRIMARY KEY id WITH {"merge-policy": {"name": "correlated-prefix","parameters": { "max-mergable-component-size": 16384, "max-tolerance-component-count": 3 }}};
+CREATE DATASET ds6(id int not unknown) OPEN TYPE PRIMARY KEY id WITH {"merge-policy": {"name": "correlated-prefix","parameters": { "max-mergable-component-size": 16384, "max-tolerance-component-count": 3 }}};
+CREATE DATASET ds7(t1) PRIMARY KEY id WITH {"merge-policy": {"name": "correlated-prefix","parameters": { "max-mergable-component-size": 16384, "max-tolerance-component-count": 3 }}};
+
+CREATE INDEX idx1 ON ds1(x: int);
+CREATE INDEX idx2 ON ds2(x: int) CAST (DEFAULT NULL);
+CREATE INDEX idx3 ON ds3(x: int) CAST (DEFAULT NULL);
+
+CREATE INDEX idx5_dt_fmt ON ds5(f_dt_fmt: datetime) CAST (DEFAULT NULL datetime 'MM/DD/YYYY hh:mm:ss.nnna' date 'MM/DD/YYYY');
+CREATE INDEX idx5_d_fmt ON ds5(f_d_fmt: date) CAST (DEFAULT NULL date 'MM/DD/YYYY');
+CREATE INDEX idx5_t_fmt ON ds5(f_t_fmt: time) CAST (DEFAULT NULL time 'hh:mm:ss.nnna');
+
+CREATE INDEX idx6_dt ON ds6(f_dt: datetime) CAST (DEFAULT NULL);
+CREATE INDEX idx6_d ON ds6(f_d: date) CAST (DEFAULT NULL);
+CREATE INDEX idx6_t ON ds6(f_t: time) CAST (DEFAULT NULL);
+
+CREATE INDEX idx1 ON ds7(s_f2);
+CREATE INDEX idx2 ON ds7(s_f2: string) CAST (DEFAULT NULL);
+CREATE INDEX idx3 ON ds7(s_f2: int) CAST (DEFAULT NULL);
+
+CREATE VIEW view1(id int, x int, y int) DEFAULT NULL AS SELECT id, x, y FROM ds1;
+CREATE VIEW view2(id int, x int, y int) DEFAULT NULL AS SELECT id, x, y FROM ds2;
+CREATE VIEW view3(id int, x string, y int) DEFAULT NULL AS SELECT id, x, y FROM ds3;
+CREATE VIEW view4(id int, x int, y int) DEFAULT NULL AS SELECT id, x, y FROM ds4;
+
+CREATE VIEW view5_dt_fmt(id int, f_dt_fmt datetime) DEFAULT NULL
+datetime 'MM/DD/YYYY hh:mm:ss.nnna' date 'MM/DD/YYYY' time 'hh:mm:ss.nnna' AS SELECT id, f_dt_fmt FROM ds5;
+
+CREATE VIEW view5_d_fmt(id int, f_d_fmt date) DEFAULT NULL
+datetime 'MM/DD/YYYY hh:mm:ss.nnna' date 'MM/DD/YYYY' time 'hh:mm:ss.nnna' AS SELECT id, f_d_fmt FROM ds5;
+
+CREATE VIEW view5_t_fmt(id int, f_t_fmt time) DEFAULT NULL
+datetime 'MM/DD/YYYY hh:mm:ss.nnna' date 'MM/DD/YYYY' time 'hh:mm:ss.nnna' AS SELECT id, f_t_fmt FROM ds5;
+
+CREATE VIEW view6_dt(id int, f_dt datetime) DEFAULT NULL AS SELECT id, f_dt FROM ds6;
+CREATE VIEW view6_d(id int, f_d date) DEFAULT NULL AS SELECT id, f_d FROM ds6;
+CREATE VIEW view6_t(id int, f_t time) DEFAULT NULL AS SELECT id, f_t FROM ds6;
+
+CREATE VIEW view7_1(id int, s_f2 string, i_f int) DEFAULT NULL AS SELECT id, s_f2, i_f FROM ds7;
+CREATE VIEW view7_2(id int, s_f2 int, i_f int) DEFAULT NULL AS SELECT id, s_f2, i_f FROM ds7;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.02.update.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.02.update.sqlpp
new file mode 100644
index 0000000..1a51639
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.02.update.sqlpp
@@ -0,0 +1,85 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+INSERT INTO ds1 [
+{"id": 1, "a": "s1", "b": 1, "x": 1, "y": 2},
+{"id": 2, "a": "s2", "b": 2, "x": 2, "y": 1},
+{"id": 3, "a": "s3", "b": 3, "x": 1.1, "y": 2.1},
+{"id": 4, "a": "s4", "b": 4, "x": 2.1, "y": 1.1},
+{"id": 5, "a": "s5", "b": 5,           "y": 1.1},
+{"id": 6, "a": "s6", "b": 6, "x": 3, "y": 3}
+];
+
+INSERT INTO ds2 [
+{"id": 1, "a": "s1", "b": 1, "x": 1, "y": 2},
+{"id": 2, "a": "s2", "b": 2, "x": 2, "y": 1},
+{"id": 3, "a": "s3", "b": 3, "x": 1.1, "y": 2.1},
+{"id": 4, "a": "s4", "b": 4, "x": 2.1, "y": 1.1},
+{"id": 5, "a": "s5", "b": 5,           "y": 1.1},
+{"id": 6, "a": "s6", "b": 6, "x": 33, "y": 3}
+];
+
+INSERT INTO ds3 [
+{"id": 1, "a": "s1", "b": 1, "x": 1, "y": 2},
+{"id": 2, "a": "s2", "b": 2, "x": 2, "y": 1},
+{"id": 3, "a": "s3", "b": 3, "x": 1.1, "y": 2.1},
+{"id": 4, "a": "s4", "b": 4, "x": 2.1, "y": 1.1},
+{"id": 5, "a": "s5", "b": 5,           "y": 1.1},
+{"id": 6, "a": "s6", "b": 6, "x": 333, "y": 3}
+];
+
+INSERT INTO ds4 [
+{"id": 1, "a": "s1", "b": 1, "x": 1, "y": 2},
+{"id": 2, "a": "s2", "b": 2, "x": 2, "y": 1},
+{"id": 3, "a": "s3", "b": 3, "x": 1.1, "y": 2.1},
+{"id": 4, "a": "s4", "b": 4, "x": 2.1, "y": 1.1},
+{"id": 5, "a": "s5", "b": 5,           "y": 1.1},
+{"id": 6, "a": "s6", "b": 6, "x": 3333, "y": 3}
+];
+
+INSERT INTO ds5 [
+{"id": 1, 'f_dt_fmt':'02/20/2020 01:40:41.001am', 'f_d_fmt':'02/20/2020', 'f_t_fmt':'01:40:41.001am'},
+{"id": 2, 'f_dt_fmt':'11/25/2021 10:12:51.999pm', 'f_d_fmt':'11/25/2021', 'f_t_fmt':'10:12:51.999pm'},
+/* Invalid value */
+{"id": 3, 'f_dt_fmt':'a', 'c_date':'b', 'f_t_fmt':'c'},
+{"id": 4, 'f_dt_fmt':'01/20/2019 02:40:41.001pm', 'f_d_fmt':'01/20/2019', 'f_t_fmt':'02:40:41.001pm'},
+{"id": 5, 'f_dt_fmt':null, 'f_d_fmt':null, 'f_t_fmt':null},
+{"id": 6}
+];
+
+INSERT INTO ds6 [
+{"id": 1, 'f_dt':'2020-02-20T01:40:41.001', 'f_d':'2020-02-20', 'f_t':'01:40:41.001'},
+{"id": 2, 'f_dt':'2021-11-25T22:12:51.999', 'f_d':'2021-11-25', 'f_t':'22:12:51.999'},
+/* Invalid value */
+{"id": 3, 'f_dt':'a', 'f_d':'b', 'f_t':'c'},
+{"id": 4, 'f_dt':'2019-01-20T14:40:41.001', 'f_d':'2019-01-20', 'f_t':'14:40:41.001'},
+{"id": 5, 'f_dt':null, 'f_d':null, 'f_t':null},
+{"id": 6}
+];
+
+INSERT INTO ds7 [
+{"id": 1, "s_f1": "s",   "s_f2": "s",   "i_f": 1 },
+{"id": 2, "s_f1": "2",   "s_f2": "2",   "i_f": 2 },
+{"id": 3, "s_f1": "3.5", "s_f2": "3.5", "i_f": 3 },
+{"id": 4, "s_f1": "4",   "s_f2": "4",   "i_f": 4 },
+{"id": 5, "s_f1": "5",   "s_f2": null,   "i_f": null },
+{"id": 6, "s_f1": "" }
+];
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.03.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.03.query.sqlpp
new file mode 100644
index 0000000..56ad29e
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.03.query.sqlpp
@@ -0,0 +1,22 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+// test that idx1 on x is not used since idx1 does not have the CAST modifier and the field x has cast
+SELECT id, x, y FROM view1 WHERE x <= 1 ORDER BY id;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.04.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.04.query.sqlpp
new file mode 100644
index 0000000..f9db494
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.04.query.sqlpp
@@ -0,0 +1,22 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+// test that idx2 on x is used since idx2 has the CAST modifier and the field x has cast
+SELECT id, x, y FROM view2 WHERE x <= 1 ORDER BY id;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.05.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.05.query.sqlpp
new file mode 100644
index 0000000..5180871
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.05.query.sqlpp
@@ -0,0 +1,22 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+// test that idx3 on x is not used since idx3 has the CAST modifier on int and the field x has cast as string
+SELECT id, x, y FROM view3 WHERE x <= "1" ORDER BY id;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.06.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.06.query.sqlpp
new file mode 100644
index 0000000..9508ece
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.06.query.sqlpp
@@ -0,0 +1,22 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+// test that idx3 on x is not used since idx3 has the CAST modifier and the field x does not have cast
+SELECT id, x, y FROM ds3 WHERE x <= 1 ORDER BY id;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.07.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.07.query.sqlpp
new file mode 100644
index 0000000..e5016c9
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.07.query.sqlpp
@@ -0,0 +1,24 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+// test that idx2 on view2(x) is used. both v4.x and v2.x are int and both v2.x and idx2 use int-default-null.
+SELECT v4.x AS v4x, v2.x AS v2x
+FROM view4 AS v4, view2 AS v2
+WHERE v4.x /*+ indexnl */ = v2.x ORDER BY v4x, v2x;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.08.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.08.query.sqlpp
new file mode 100644
index 0000000..2242a50
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.08.query.sqlpp
@@ -0,0 +1,24 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+// test that idx3 on view3(x) is not used because v3.x uses string-default-null and idx3 uses int-default-null
+SELECT v4.x AS v4x, v3.x AS v3x
+FROM view4 AS v4, view3 AS v3
+WHERE v4.x /*+ indexnl */ = v3.x ORDER BY v4x, v3x;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.09.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.09.query.sqlpp
new file mode 100644
index 0000000..5be7fc9
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.09.query.sqlpp
@@ -0,0 +1,24 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+// test that idx1 is not used because idx1 does not have CAST modifier (idx1 is just int and v1.x uses int-default-null).
+SELECT v4.x AS v4x, v1.x AS v1x
+FROM view4 AS v4, view1 AS v1
+WHERE v4.x /*+ indexnl */ = v1.x ORDER BY v4x, v1x;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.10.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.10.query.sqlpp
new file mode 100644
index 0000000..5be7fc9
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.10.query.sqlpp
@@ -0,0 +1,24 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+// test that idx1 is not used because idx1 does not have CAST modifier (idx1 is just int and v1.x uses int-default-null).
+SELECT v4.x AS v4x, v1.x AS v1x
+FROM view4 AS v4, view1 AS v1
+WHERE v4.x /*+ indexnl */ = v1.x ORDER BY v4x, v1x;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.11.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.11.query.sqlpp
new file mode 100644
index 0000000..59786c2
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.11.query.sqlpp
@@ -0,0 +1,24 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+// test that idx2 is not used because idx2 uses int-default-null and ds2.x is just int.
+SELECT v4.x AS v4x, ds2.x AS ds2x
+FROM view4 AS v4, ds2 AS ds2
+WHERE v4.x /*+ indexnl */ = ds2.x ORDER BY v4x, ds2x;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.12.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.12.query.sqlpp
new file mode 100644
index 0000000..e47124a
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.12.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SELECT VALUE v
+FROM view5_dt_fmt AS v
+WHERE v.f_dt_fmt < datetime('2020-12-20T00:00:00')
+ORDER BY v.id;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.13.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.13.query.sqlpp
new file mode 100644
index 0000000..faae08d
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.13.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SELECT VALUE v
+FROM view5_d_fmt AS v
+WHERE v.f_d_fmt < date('2020-12-20')
+ORDER BY v.id;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.14.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.14.query.sqlpp
new file mode 100644
index 0000000..3c775d9
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.14.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SELECT VALUE v
+FROM view5_t_fmt AS v
+WHERE v.f_t_fmt < time('18:13:03')
+ORDER BY v.id;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.15.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.15.query.sqlpp
new file mode 100644
index 0000000..7b88c3d
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.15.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SELECT VALUE v
+FROM view6_dt AS v
+WHERE v.f_dt < datetime('2020-12-20T00:00:00')
+ORDER BY v.id;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.16.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.16.query.sqlpp
new file mode 100644
index 0000000..5871f2f
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.16.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SELECT VALUE v
+FROM view6_d AS v
+WHERE v.f_d < date('2020-12-20')
+ORDER BY v.id;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.17.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.17.query.sqlpp
new file mode 100644
index 0000000..93f1c88
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.17.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+SELECT VALUE v
+FROM view6_t AS v
+WHERE v.f_t < time('18:13:03')
+ORDER BY v.id;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.18.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.18.query.sqlpp
new file mode 100644
index 0000000..29081f2
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.18.query.sqlpp
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+
+// testing that idx5_dt_fmt is used
+SELECT v6.f_dt AS v6f_dt, v5.f_dt_fmt AS v5f_dt_fmt
+FROM view6_dt AS v6, view5_dt_fmt AS v5
+WHERE v6.f_dt /*+ indexnl */ = v5.f_dt_fmt ORDER BY v6f_dt, v5f_dt_fmt;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.19.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.19.query.sqlpp
new file mode 100644
index 0000000..e632e91
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.19.query.sqlpp
@@ -0,0 +1,22 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+// index idx2 should be used
+SELECT id, s_f2 FROM view7_1 WHERE s_f2 < "4" ORDER BY id;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.20.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.20.query.sqlpp
new file mode 100644
index 0000000..56296e8
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.20.query.sqlpp
@@ -0,0 +1,22 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+// no index is used (and no result is returned because of incompatible types. s_f2 string vs. 4 int)
+SELECT id, s_f2 FROM view7_1 WHERE s_f2 < 4 ORDER BY id;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.21.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.21.query.sqlpp
new file mode 100644
index 0000000..7e03ebf
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.21.query.sqlpp
@@ -0,0 +1,22 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+// no index is used (and no result is returned because of incompatible types. s_f2 int vs. "4" string)
+SELECT id, s_f2 FROM view7_2 WHERE s_f2 < "4" ORDER BY id;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.22.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.22.query.sqlpp
new file mode 100644
index 0000000..f0eece2
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.22.query.sqlpp
@@ -0,0 +1,22 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+// index idx3 should be used
+SELECT id, s_f2 FROM view7_2 WHERE s_f2 < 4 ORDER BY id;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.23.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.23.query.sqlpp
new file mode 100644
index 0000000..4fe0cae
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/index-selection/cast-default-null-correlated/cast-default-null-correlated.23.query.sqlpp
@@ -0,0 +1,23 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+USE test;
+// index idx1 should be used
+set `compiler.indexonly` "false"; // there is an issue with using index only plan where nulls/missings are included
+SELECT id, s_f2 FROM ds7 WHERE s_f2 < "4" ORDER BY id;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.003.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.003.adm
new file mode 100644
index 0000000..e2aa8c8
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.003.adm
@@ -0,0 +1,9 @@
+{ "values": [ null, null, 9 ] }
+{ "values": [ null, "1", 1 ] }
+{ "values": [ null, "4", 4 ] }
+{ "values": [ null, "5", 5 ] }
+{ "values": [ null, "8", 8 ] }
+{ "values": [ 2, "2", 2 ] }
+{ "values": [ 3, "3", 3 ] }
+{ "values": [ 6, "6", 6 ] }
+{ "values": [ 7, "7", 7 ] }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.004.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.004.adm
new file mode 100644
index 0000000..cc2dc3f
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.004.adm
@@ -0,0 +1,9 @@
+{ "values": [ null, null, 9 ] }
+{ "values": [ null, "1.5", 1 ] }
+{ "values": [ null, "4.5", 4 ] }
+{ "values": [ null, "5.5", 5 ] }
+{ "values": [ null, "8.5", 8 ] }
+{ "values": [ 2.0, "2.5", 2 ] }
+{ "values": [ 3.5, "3.5", 3 ] }
+{ "values": [ 6.0, "6.5", 6 ] }
+{ "values": [ 7.5, "7.5", 7 ] }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.005.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.005.adm
new file mode 100644
index 0000000..799cdcc
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.005.adm
@@ -0,0 +1,9 @@
+{ "values": [ null, 1 ] }
+{ "values": [ null, 4 ] }
+{ "values": [ null, 5 ] }
+{ "values": [ null, 8 ] }
+{ "values": [ null, 9 ] }
+{ "values": [ 2, 2 ] }
+{ "values": [ 3, 3 ] }
+{ "values": [ 6, 6 ] }
+{ "values": [ 7, 7 ] }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.006.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.006.adm
new file mode 100644
index 0000000..4ca6341
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.006.adm
@@ -0,0 +1,9 @@
+{ "values": [ null, 5 ] }
+{ "values": [ null, 8 ] }
+{ "values": [ null, 9 ] }
+{ "values": [ 0, 7 ] }
+{ "values": [ 1, 1 ] }
+{ "values": [ 1, 2 ] }
+{ "values": [ 1, 3 ] }
+{ "values": [ 1, 4 ] }
+{ "values": [ 1, 6 ] }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.007.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.007.adm
new file mode 100644
index 0000000..b6cff8e
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.007.adm
@@ -0,0 +1,9 @@
+{ "values": [ null, 8 ] }
+{ "values": [ null, 9 ] }
+{ "values": [ "1", 1 ] }
+{ "values": [ "1", 3 ] }
+{ "values": [ "1.5", 2 ] }
+{ "values": [ "1.5", 4 ] }
+{ "values": [ "false", 7 ] }
+{ "values": [ "str", 5 ] }
+{ "values": [ "true", 6 ] }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.008.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.008.adm
new file mode 100644
index 0000000..ec983bf
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.008.adm
@@ -0,0 +1,9 @@
+{ "values": [ null, 5 ] }
+{ "values": [ null, 8 ] }
+{ "values": [ null, 9 ] }
+{ "values": [ 0.0, 7 ] }
+{ "values": [ 1.0, 1 ] }
+{ "values": [ 1.0, 3 ] }
+{ "values": [ 1.0, 6 ] }
+{ "values": [ 1.5, 2 ] }
+{ "values": [ 1.5, 4 ] }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.009.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.009.adm
new file mode 100644
index 0000000..e2aa8c8
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.009.adm
@@ -0,0 +1,9 @@
+{ "values": [ null, null, 9 ] }
+{ "values": [ null, "1", 1 ] }
+{ "values": [ null, "4", 4 ] }
+{ "values": [ null, "5", 5 ] }
+{ "values": [ null, "8", 8 ] }
+{ "values": [ 2, "2", 2 ] }
+{ "values": [ 3, "3", 3 ] }
+{ "values": [ 6, "6", 6 ] }
+{ "values": [ 7, "7", 7 ] }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.010.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.010.adm
new file mode 100644
index 0000000..cc2dc3f
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.010.adm
@@ -0,0 +1,9 @@
+{ "values": [ null, null, 9 ] }
+{ "values": [ null, "1.5", 1 ] }
+{ "values": [ null, "4.5", 4 ] }
+{ "values": [ null, "5.5", 5 ] }
+{ "values": [ null, "8.5", 8 ] }
+{ "values": [ 2.0, "2.5", 2 ] }
+{ "values": [ 3.5, "3.5", 3 ] }
+{ "values": [ 6.0, "6.5", 6 ] }
+{ "values": [ 7.5, "7.5", 7 ] }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.011.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.011.adm
new file mode 100644
index 0000000..799cdcc
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.011.adm
@@ -0,0 +1,9 @@
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\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.012.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.012.adm
new file mode 100644
index 0000000..4ca6341
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.012.adm
@@ -0,0 +1,9 @@
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\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.013.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.013.adm
new file mode 100644
index 0000000..b6cff8e
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.013.adm
@@ -0,0 +1,9 @@
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+{ "values": [ "1.5", 2 ] }
+{ "values": [ "1.5", 4 ] }
+{ "values": [ "false", 7 ] }
+{ "values": [ "str", 5 ] }
+{ "values": [ "true", 6 ] }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.014.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.014.adm
new file mode 100644
index 0000000..ec983bf
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.014.adm
@@ -0,0 +1,9 @@
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+{ "values": [ 1.0, 1 ] }
+{ "values": [ 1.0, 3 ] }
+{ "values": [ 1.0, 6 ] }
+{ "values": [ 1.5, 2 ] }
+{ "values": [ 1.5, 4 ] }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.015.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.015.adm
new file mode 100644
index 0000000..6080d55
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.015.adm
@@ -0,0 +1 @@
+{ "DataverseName": "test", "DatasetName": "ds2", "IndexName": "ds2_o_idx2", "IndexStructure": "BTREE", "SearchKey": [ [ "o_s_f" ], [ "o_d_f" ] ], "IsPrimary": false, "Timestamp": "Sun Oct 31 17:55:11 PDT 2021", "PendingOp": 0, "SearchKeyType": [ "double", "string" ], "ExcludeUnknownKey": false, "Cast": { "Default": null } }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.016.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.016.adm
new file mode 100644
index 0000000..77ce9ac
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.016.adm
@@ -0,0 +1,6 @@
+{ "values": [ null, 3 ] }
+{ "values": [ null, 5 ] }
+{ "values": [ null, 6 ] }
+{ "values": [ "date: { 2019-01-20 }", 4 ] }
+{ "values": [ "date: { 2020-02-20 }", 1 ] }
+{ "values": [ "date: { 2021-11-25 }", 2 ] }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.017.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.017.adm
new file mode 100644
index 0000000..38633f5
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.017.adm
@@ -0,0 +1,6 @@
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+{ "values": [ null, 6 ] }
+{ "values": [ "time: { 01:40:41.001 }", 1 ] }
+{ "values": [ "time: { 14:40:41.001 }", 4 ] }
+{ "values": [ "time: { 22:12:51.999 }", 2 ] }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.018.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.018.adm
new file mode 100644
index 0000000..8b9d5df
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.018.adm
@@ -0,0 +1,6 @@
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+{ "values": [ null, 5 ] }
+{ "values": [ null, 6 ] }
+{ "values": [ "datetime: { 2019-01-20T14:40:41.001 }", 4 ] }
+{ "values": [ "datetime: { 2020-02-20T01:40:41.001 }", 1 ] }
+{ "values": [ "datetime: { 2021-11-25T22:12:51.999 }", 2 ] }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.019.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.019.adm
new file mode 100644
index 0000000..77ce9ac
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.019.adm
@@ -0,0 +1,6 @@
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+{ "values": [ null, 6 ] }
+{ "values": [ "date: { 2019-01-20 }", 4 ] }
+{ "values": [ "date: { 2020-02-20 }", 1 ] }
+{ "values": [ "date: { 2021-11-25 }", 2 ] }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.020.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.020.adm
new file mode 100644
index 0000000..38633f5
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.020.adm
@@ -0,0 +1,6 @@
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\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.021.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.021.adm
new file mode 100644
index 0000000..8b9d5df
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.021.adm
@@ -0,0 +1,6 @@
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+{ "values": [ "datetime: { 2020-02-20T01:40:41.001 }", 1 ] }
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\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.022.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.022.adm
new file mode 100644
index 0000000..fe93409
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.022.adm
@@ -0,0 +1,6 @@
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\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.023.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.023.adm
new file mode 100644
index 0000000..77ce9ac
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.023.adm
@@ -0,0 +1,6 @@
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+{ "values": [ null, 6 ] }
+{ "values": [ "date: { 2019-01-20 }", 4 ] }
+{ "values": [ "date: { 2020-02-20 }", 1 ] }
+{ "values": [ "date: { 2021-11-25 }", 2 ] }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.024.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.024.adm
new file mode 100644
index 0000000..38633f5
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.024.adm
@@ -0,0 +1,6 @@
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+{ "values": [ null, 6 ] }
+{ "values": [ "time: { 01:40:41.001 }", 1 ] }
+{ "values": [ "time: { 14:40:41.001 }", 4 ] }
+{ "values": [ "time: { 22:12:51.999 }", 2 ] }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.025.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.025.adm
new file mode 100644
index 0000000..8b9d5df
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.025.adm
@@ -0,0 +1,6 @@
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+{ "values": [ null, 6 ] }
+{ "values": [ "datetime: { 2019-01-20T14:40:41.001 }", 4 ] }
+{ "values": [ "datetime: { 2020-02-20T01:40:41.001 }", 1 ] }
+{ "values": [ "datetime: { 2021-11-25T22:12:51.999 }", 2 ] }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.026.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.026.adm
new file mode 100644
index 0000000..77ce9ac
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.026.adm
@@ -0,0 +1,6 @@
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+{ "values": [ null, 5 ] }
+{ "values": [ null, 6 ] }
+{ "values": [ "date: { 2019-01-20 }", 4 ] }
+{ "values": [ "date: { 2020-02-20 }", 1 ] }
+{ "values": [ "date: { 2021-11-25 }", 2 ] }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.027.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.027.adm
new file mode 100644
index 0000000..38633f5
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.027.adm
@@ -0,0 +1,6 @@
+{ "values": [ null, 3 ] }
+{ "values": [ null, 5 ] }
+{ "values": [ null, 6 ] }
+{ "values": [ "time: { 01:40:41.001 }", 1 ] }
+{ "values": [ "time: { 14:40:41.001 }", 4 ] }
+{ "values": [ "time: { 22:12:51.999 }", 2 ] }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.028.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.028.adm
new file mode 100644
index 0000000..8b9d5df
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.028.adm
@@ -0,0 +1,6 @@
+{ "values": [ null, 3 ] }
+{ "values": [ null, 5 ] }
+{ "values": [ null, 6 ] }
+{ "values": [ "datetime: { 2019-01-20T14:40:41.001 }", 4 ] }
+{ "values": [ "datetime: { 2020-02-20T01:40:41.001 }", 1 ] }
+{ "values": [ "datetime: { 2021-11-25T22:12:51.999 }", 2 ] }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.029.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.029.adm
new file mode 100644
index 0000000..fe93409
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.029.adm
@@ -0,0 +1,6 @@
+{ "values": [ null, 1 ] }
+{ "values": [ null, 2 ] }
+{ "values": [ null, 3 ] }
+{ "values": [ null, 4 ] }
+{ "values": [ null, 5 ] }
+{ "values": [ null, 6 ] }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.030.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.030.adm
new file mode 100644
index 0000000..0101b1d
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.030.adm
@@ -0,0 +1,7 @@
+{ "IndexName": "ds3_o_idx_f_d", "Cast": { "Default": null } }
+{ "IndexName": "ds3_o_idx_f_d_fmt", "Cast": { "Default": null, "DataFormat": [ null, "MM/DD/YYYY", null ] } }
+{ "IndexName": "ds3_o_idx_f_dt", "Cast": { "Default": null } }
+{ "IndexName": "ds3_o_idx_f_dt_fmt", "Cast": { "Default": null, "DataFormat": [ "MM/DD/YYYY hh:mm:ss.nnna", null, null ] } }
+{ "IndexName": "ds3_o_idx_f_t", "Cast": { "Default": null } }
+{ "IndexName": "ds3_o_idx_f_t_fmt", "Cast": { "Default": null, "DataFormat": [ null, null, "hh:mm:ss.nnna" ] } }
+{ "IndexName": "ds3_o_idx_invalid_fmt", "Cast": { "Default": null, "DataFormat": [ null, "invalid_format", null ] } }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.031.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.031.adm
new file mode 100644
index 0000000..a8f3fda
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.031.adm
@@ -0,0 +1,7 @@
+{ "IndexName": "ds4_o_idx_f_d", "Cast": { "Default": null } }
+{ "IndexName": "ds4_o_idx_f_d_fmt", "Cast": { "Default": null, "DataFormat": [ null, "MM/DD/YYYY", null ] } }
+{ "IndexName": "ds4_o_idx_f_dt", "Cast": { "Default": null } }
+{ "IndexName": "ds4_o_idx_f_dt_fmt", "Cast": { "Default": null, "DataFormat": [ "MM/DD/YYYY hh:mm:ss.nnna", null, null ] } }
+{ "IndexName": "ds4_o_idx_f_t", "Cast": { "Default": null } }
+{ "IndexName": "ds4_o_idx_f_t_fmt", "Cast": { "Default": null, "DataFormat": [ null, null, "hh:mm:ss.nnna" ] } }
+{ "IndexName": "ds4_o_idx_invalid_fmt", "Cast": { "Default": null, "DataFormat": [ null, "invalid_format", null ] } }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.032.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.032.adm
new file mode 100644
index 0000000..64cd5cf
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.032.adm
@@ -0,0 +1,6 @@
+{ "values": [ "", 6 ] }
+{ "values": [ "2", 2 ] }
+{ "values": [ "3.5", 3 ] }
+{ "values": [ "4", 4 ] }
+{ "values": [ "5", 5 ] }
+{ "values": [ "s", 1 ] }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.033.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.033.adm
new file mode 100644
index 0000000..64cd5cf
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.033.adm
@@ -0,0 +1,6 @@
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+{ "values": [ "2", 2 ] }
+{ "values": [ "3.5", 3 ] }
+{ "values": [ "4", 4 ] }
+{ "values": [ "5", 5 ] }
+{ "values": [ "s", 1 ] }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.034.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.034.adm
new file mode 100644
index 0000000..1674d82
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.034.adm
@@ -0,0 +1,6 @@
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\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.035.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.035.adm
new file mode 100644
index 0000000..97e4e83
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.035.adm
@@ -0,0 +1,6 @@
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\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.036.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.036.adm
new file mode 100644
index 0000000..feca349
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.036.adm
@@ -0,0 +1,6 @@
+{ "values": [ null, 5 ] }
+{ "values": [ null, 6 ] }
+{ "values": [ "2", 2 ] }
+{ "values": [ "3.5", 3 ] }
+{ "values": [ "4", 4 ] }
+{ "values": [ "s", 1 ] }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.037.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.037.adm
new file mode 100644
index 0000000..8d8fe2a
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.037.adm
@@ -0,0 +1,6 @@
+{ "values": [ null, 1 ] }
+{ "values": [ null, 5 ] }
+{ "values": [ null, 6 ] }
+{ "values": [ 2, 2 ] }
+{ "values": [ 3, 3 ] }
+{ "values": [ 4, 4 ] }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.038.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.038.adm
new file mode 100644
index 0000000..f03683f
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.038.adm
@@ -0,0 +1,6 @@
+{ "values": [ null, 5 ] }
+{ "values": [ null, 6 ] }
+{ "values": [ 1, 1 ] }
+{ "values": [ 2, 2 ] }
+{ "values": [ 3, 3 ] }
+{ "values": [ 4, 4 ] }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.039.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.039.adm
new file mode 100644
index 0000000..12f73b1
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.039.adm
@@ -0,0 +1,6 @@
+{ "values": [ null, 5 ] }
+{ "values": [ null, 6 ] }
+{ "values": [ "1", 1 ] }
+{ "values": [ "2", 2 ] }
+{ "values": [ "3", 3 ] }
+{ "values": [ "4", 4 ] }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.040.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.040.adm
new file mode 100644
index 0000000..64cd5cf
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.040.adm
@@ -0,0 +1,6 @@
+{ "values": [ "", 6 ] }
+{ "values": [ "2", 2 ] }
+{ "values": [ "3.5", 3 ] }
+{ "values": [ "4", 4 ] }
+{ "values": [ "5", 5 ] }
+{ "values": [ "s", 1 ] }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.041.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.041.adm
new file mode 100644
index 0000000..64cd5cf
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.041.adm
@@ -0,0 +1,6 @@
+{ "values": [ "", 6 ] }
+{ "values": [ "2", 2 ] }
+{ "values": [ "3.5", 3 ] }
+{ "values": [ "4", 4 ] }
+{ "values": [ "5", 5 ] }
+{ "values": [ "s", 1 ] }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.042.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.042.adm
new file mode 100644
index 0000000..1674d82
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.042.adm
@@ -0,0 +1,6 @@
+{ "values": [ null, 1 ] }
+{ "values": [ 0, 6 ] }
+{ "values": [ 2, 2 ] }
+{ "values": [ 3, 3 ] }
+{ "values": [ 4, 4 ] }
+{ "values": [ 5, 5 ] }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.043.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.043.adm
new file mode 100644
index 0000000..97e4e83
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.043.adm
@@ -0,0 +1,6 @@
+{ "values": [ null, 5 ] }
+{ "values": [ 6 ] }
+{ "values": [ "2", 2 ] }
+{ "values": [ "3.5", 3 ] }
+{ "values": [ "4", 4 ] }
+{ "values": [ "s", 1 ] }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.044.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.044.adm
new file mode 100644
index 0000000..feca349
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.044.adm
@@ -0,0 +1,6 @@
+{ "values": [ null, 5 ] }
+{ "values": [ null, 6 ] }
+{ "values": [ "2", 2 ] }
+{ "values": [ "3.5", 3 ] }
+{ "values": [ "4", 4 ] }
+{ "values": [ "s", 1 ] }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.045.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.045.adm
new file mode 100644
index 0000000..8d8fe2a
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.045.adm
@@ -0,0 +1,6 @@
+{ "values": [ null, 1 ] }
+{ "values": [ null, 5 ] }
+{ "values": [ null, 6 ] }
+{ "values": [ 2, 2 ] }
+{ "values": [ 3, 3 ] }
+{ "values": [ 4, 4 ] }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.046.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.046.adm
new file mode 100644
index 0000000..f03683f
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.046.adm
@@ -0,0 +1,6 @@
+{ "values": [ null, 5 ] }
+{ "values": [ null, 6 ] }
+{ "values": [ 1, 1 ] }
+{ "values": [ 2, 2 ] }
+{ "values": [ 3, 3 ] }
+{ "values": [ 4, 4 ] }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.047.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.047.adm
new file mode 100644
index 0000000..12f73b1
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.047.adm
@@ -0,0 +1,6 @@
+{ "values": [ null, 5 ] }
+{ "values": [ null, 6 ] }
+{ "values": [ "1", 1 ] }
+{ "values": [ "2", 2 ] }
+{ "values": [ "3", 3 ] }
+{ "values": [ "4", 4 ] }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.048.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.048.adm
new file mode 100644
index 0000000..086d8cb
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.048.adm
@@ -0,0 +1,3 @@
+{ "values": [ 2, 2 ] }
+{ "values": [ 3, 3 ] }
+{ "values": [ 4, 4 ] }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.049.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.049.adm
new file mode 100644
index 0000000..086d8cb
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.049.adm
@@ -0,0 +1,3 @@
+{ "values": [ 2, 2 ] }
+{ "values": [ 3, 3 ] }
+{ "values": [ 4, 4 ] }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.050.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.050.adm
new file mode 100644
index 0000000..99eb793
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/ddl/index-cast-null-correlated/index-cast-null-correlated.050.adm
@@ -0,0 +1,18 @@
+{ "IndexName": "idx1", "SearchKey": [ [ "s_f1" ] ] }
+{ "IndexName": "idx10", "SearchKey": [ [ "s_f1" ] ], "SearchKeyType": [ "string" ], "Cast": { "Default": null } }
+{ "IndexName": "idx11", "SearchKey": [ [ "s_f1" ] ], "SearchKeyType": [ "int64" ], "Cast": { "Default": null } }
+{ "IndexName": "idx12", "SearchKey": [ [ "s_f2" ] ] }
+{ "IndexName": "idx13", "SearchKey": [ [ "s_f2" ] ], "SearchKeyType": [ "string" ], "Cast": { "Default": null } }
+{ "IndexName": "idx14", "SearchKey": [ [ "s_f2" ] ], "SearchKeyType": [ "int64" ], "Cast": { "Default": null } }
+{ "IndexName": "idx15", "SearchKey": [ [ "i_f" ] ], "SearchKeyType": [ "int64" ], "Cast": { "Default": null } }
+{ "IndexName": "idx16", "SearchKey": [ [ "i_f" ] ], "SearchKeyType": [ "string" ], "Cast": { "Default": null } }
+{ "IndexName": "idx2", "SearchKey": [ [ "s_f1" ] ], "SearchKeyType": [ "string" ], "Cast": { "Default": null } }
+{ "IndexName": "idx3", "SearchKey": [ [ "s_f1" ] ], "SearchKeyType": [ "int64" ], "Cast": { "Default": null } }
+{ "IndexName": "idx4", "SearchKey": [ [ "s_f2" ] ] }
+{ "IndexName": "idx5", "SearchKey": [ [ "s_f2" ] ], "SearchKeyType": [ "string" ], "Cast": { "Default": null } }
+{ "IndexName": "idx6", "SearchKey": [ [ "s_f2" ] ], "SearchKeyType": [ "int64" ], "Cast": { "Default": null } }
+{ "IndexName": "idx7", "SearchKey": [ [ "i_f" ] ], "SearchKeyType": [ "int64" ], "Cast": { "Default": null } }
+{ "IndexName": "idx8", "SearchKey": [ [ "i_f" ] ], "SearchKeyType": [ "string" ], "Cast": { "Default": null } }
+{ "IndexName": "idx9", "SearchKey": [ [ "s_f1" ] ] }
+{ "IndexName": "idx_exc1", "SearchKey": [ [ "s_f2" ] ], "SearchKeyType": [ "int64" ], "Cast": { "Default": null } }
+{ "IndexName": "idx_exc2", "SearchKey": [ [ "s_f2" ] ], "SearchKeyType": [ "int64" ], "Cast": { "Default": null } }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.03.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.03.adm
new file mode 100644
index 0000000..6b56041
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.03.adm
@@ -0,0 +1,2 @@
+{ "id": 1, "x": 1, "y": 2 }
+{ "id": 3, "x": 1, "y": 2 }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.04.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.04.adm
new file mode 100644
index 0000000..6b56041
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.04.adm
@@ -0,0 +1,2 @@
+{ "id": 1, "x": 1, "y": 2 }
+{ "id": 3, "x": 1, "y": 2 }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.05.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.05.adm
new file mode 100644
index 0000000..140eea9
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.05.adm
@@ -0,0 +1 @@
+{ "id": 1, "x": "1", "y": 2 }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.06.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.06.adm
new file mode 100644
index 0000000..38e6954
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.06.adm
@@ -0,0 +1 @@
+{ "id": 1, "x": 1, "y": 2 }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.07.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.07.adm
new file mode 100644
index 0000000..a975f87
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.07.adm
@@ -0,0 +1,8 @@
+{ "v4x": 1, "v2x": 1 }
+{ "v4x": 1, "v2x": 1 }
+{ "v4x": 1, "v2x": 1 }
+{ "v4x": 1, "v2x": 1 }
+{ "v4x": 2, "v2x": 2 }
+{ "v4x": 2, "v2x": 2 }
+{ "v4x": 2, "v2x": 2 }
+{ "v4x": 2, "v2x": 2 }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.08.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.08.adm
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.08.adm
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.09.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.09.adm
new file mode 100644
index 0000000..e2015b1
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.09.adm
@@ -0,0 +1,8 @@
+{ "v4x": 1, "v1x": 1 }
+{ "v4x": 1, "v1x": 1 }
+{ "v4x": 1, "v1x": 1 }
+{ "v4x": 1, "v1x": 1 }
+{ "v4x": 2, "v1x": 2 }
+{ "v4x": 2, "v1x": 2 }
+{ "v4x": 2, "v1x": 2 }
+{ "v4x": 2, "v1x": 2 }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.10.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.10.adm
new file mode 100644
index 0000000..e2015b1
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.10.adm
@@ -0,0 +1,8 @@
+{ "v4x": 1, "v1x": 1 }
+{ "v4x": 1, "v1x": 1 }
+{ "v4x": 1, "v1x": 1 }
+{ "v4x": 1, "v1x": 1 }
+{ "v4x": 2, "v1x": 2 }
+{ "v4x": 2, "v1x": 2 }
+{ "v4x": 2, "v1x": 2 }
+{ "v4x": 2, "v1x": 2 }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.11.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.11.adm
new file mode 100644
index 0000000..8d727bf
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.11.adm
@@ -0,0 +1,4 @@
+{ "v4x": 1, "ds2x": 1 }
+{ "v4x": 1, "ds2x": 1 }
+{ "v4x": 2, "ds2x": 2 }
+{ "v4x": 2, "ds2x": 2 }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.12.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.12.adm
new file mode 100644
index 0000000..107ba48
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.12.adm
@@ -0,0 +1,2 @@
+{ "id": 1, "f_dt_fmt": datetime("2020-02-20T01:40:41.001") }
+{ "id": 4, "f_dt_fmt": datetime("2019-01-20T14:40:41.001") }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.13.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.13.adm
new file mode 100644
index 0000000..bac020d
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.13.adm
@@ -0,0 +1,2 @@
+{ "id": 1, "f_d_fmt": date("2020-02-20") }
+{ "id": 4, "f_d_fmt": date("2019-01-20") }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.14.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.14.adm
new file mode 100644
index 0000000..66960b4
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.14.adm
@@ -0,0 +1,2 @@
+{ "id": 1, "f_t_fmt": time("01:40:41.001") }
+{ "id": 4, "f_t_fmt": time("14:40:41.001") }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.15.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.15.adm
new file mode 100644
index 0000000..efc9e6a
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.15.adm
@@ -0,0 +1,2 @@
+{ "id": 1, "f_dt": datetime("2020-02-20T01:40:41.001") }
+{ "id": 4, "f_dt": datetime("2019-01-20T14:40:41.001") }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.16.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.16.adm
new file mode 100644
index 0000000..c0843a1
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.16.adm
@@ -0,0 +1,2 @@
+{ "id": 1, "f_d": date("2020-02-20") }
+{ "id": 4, "f_d": date("2019-01-20") }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.17.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.17.adm
new file mode 100644
index 0000000..bae3de6
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.17.adm
@@ -0,0 +1,2 @@
+{ "id": 1, "f_t": time("01:40:41.001") }
+{ "id": 4, "f_t": time("14:40:41.001") }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.18.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.18.adm
new file mode 100644
index 0000000..448a834
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.18.adm
@@ -0,0 +1,3 @@
+{ "v6f_dt": datetime("2019-01-20T14:40:41.001"), "v5f_dt_fmt": datetime("2019-01-20T14:40:41.001") }
+{ "v6f_dt": datetime("2020-02-20T01:40:41.001"), "v5f_dt_fmt": datetime("2020-02-20T01:40:41.001") }
+{ "v6f_dt": datetime("2021-11-25T22:12:51.999"), "v5f_dt_fmt": datetime("2021-11-25T22:12:51.999") }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.19.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.19.adm
new file mode 100644
index 0000000..49938d5
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.19.adm
@@ -0,0 +1,2 @@
+{ "id": 2, "s_f2": "2" }
+{ "id": 3, "s_f2": "3.5" }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.20.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.20.adm
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.20.adm
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.21.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.21.adm
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.21.adm
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.22.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.22.adm
new file mode 100644
index 0000000..78954d0
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.22.adm
@@ -0,0 +1,2 @@
+{ "id": 2, "s_f2": 2 }
+{ "id": 3, "s_f2": 3 }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.23.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.23.adm
new file mode 100644
index 0000000..49938d5
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/index-selection/cast-default-null-correlated/cast-default-null-correlated.23.adm
@@ -0,0 +1,2 @@
+{ "id": 2, "s_f2": "2" }
+{ "id": 3, "s_f2": "3.5" }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/testsuite_sqlpp.xml b/asterixdb/asterix-app/src/test/resources/runtimets/testsuite_sqlpp.xml
index 8801ce7..edd3418 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/testsuite_sqlpp.xml
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/testsuite_sqlpp.xml
@@ -4316,6 +4316,11 @@
       </compilation-unit>
     </test-case>
     <test-case FilePath="ddl">
+      <compilation-unit name="index-cast-null-correlated">
+        <output-dir compare="Text">index-cast-null-correlated</output-dir>
+      </compilation-unit>
+    </test-case>
+    <test-case FilePath="ddl">
       <compilation-unit name="index-cast-null-negative">
         <output-dir compare="Text">index-cast-null-negative</output-dir>
         <expected-error>CAST modifier is only allowed for B-Tree indexes</expected-error>
@@ -6535,6 +6540,11 @@
         <output-dir compare="Text">cast-default-null</output-dir>
       </compilation-unit>
     </test-case>
+    <test-case FilePath="index-selection">
+      <compilation-unit name="cast-default-null-correlated">
+        <output-dir compare="Text">cast-default-null-correlated</output-dir>
+      </compilation-unit>
+    </test-case>
   </test-group>
   <test-group name="inverted-index-join-noeqjoin">
     <test-case FilePath="inverted-index-join-noeqjoin">
diff --git a/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/utils/SecondaryBTreeOperationsHelper.java b/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/utils/SecondaryBTreeOperationsHelper.java
index c3e2394..3d4fb16 100644
--- a/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/utils/SecondaryBTreeOperationsHelper.java
+++ b/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/utils/SecondaryBTreeOperationsHelper.java
@@ -24,23 +24,15 @@
 import org.apache.asterix.common.utils.StorageConstants;
 import org.apache.asterix.external.indexing.IndexingConstants;
 import org.apache.asterix.external.operators.ExternalScanOperatorDescriptor;
-import org.apache.asterix.formats.base.IDataFormat;
 import org.apache.asterix.metadata.declared.MetadataProvider;
 import org.apache.asterix.metadata.entities.Dataset;
 import org.apache.asterix.metadata.entities.Index;
 import org.apache.asterix.metadata.entities.InternalDatasetDetails;
-import org.apache.asterix.om.base.IAObject;
-import org.apache.asterix.om.constants.AsterixConstantValue;
-import org.apache.asterix.om.functions.IFunctionDescriptor;
-import org.apache.asterix.om.functions.IFunctionManager;
-import org.apache.asterix.om.typecomputer.impl.TypeComputeUtils;
 import org.apache.asterix.om.types.ARecordType;
-import org.apache.asterix.om.types.BuiltinType;
 import org.apache.asterix.om.types.IAType;
 import org.apache.asterix.runtime.utils.RuntimeUtils;
 import org.apache.hyracks.algebricks.common.exceptions.AlgebricksException;
 import org.apache.hyracks.algebricks.common.utils.Pair;
-import org.apache.hyracks.algebricks.core.algebra.functions.FunctionIdentifier;
 import org.apache.hyracks.algebricks.core.jobgen.impl.ConnectorPolicyAssignmentPolicy;
 import org.apache.hyracks.algebricks.data.IBinaryComparatorFactoryProvider;
 import org.apache.hyracks.algebricks.data.ISerializerDeserializerProvider;
@@ -73,12 +65,10 @@
     public JobSpecification buildLoadingJobSpec() throws AlgebricksException {
         JobSpecification spec = RuntimeUtils.createJobSpecification(metadataProvider.getApplicationContext());
         Index.ValueIndexDetails indexDetails = (Index.ValueIndexDetails) index.getIndexDetails();
-        boolean isOverridingKeyFieldTypes = indexDetails.isOverridingKeyFieldTypes();
         int[] fieldPermutation = createFieldPermutationForBulkLoadOp(indexDetails.getKeyFieldNames().size());
         IIndexDataflowHelperFactory dataflowHelperFactory = new IndexDataflowHelperFactory(
                 metadataProvider.getStorageComponentProvider().getStorageManager(), secondaryFileSplitProvider);
-        boolean excludeUnknown =
-                excludeUnknowns(index, indexDetails) && (anySecondaryKeyIsNullable || isOverridingKeyFieldTypes);
+        boolean excludeUnknown = excludeUnknownKeys(index, indexDetails, anySecondaryKeyIsNullable);
         if (dataset.getDatasetType() == DatasetType.EXTERNAL) {
             /*
              * In case of external data,
@@ -133,7 +123,7 @@
             return spec;
         } else {
             // job spec:
-            // key provider -> primary idx -> (cast assign)? -> assign -> (select)? -> (sort)? -> bulk load -> sink
+            // key provider -> primary idx scan -> cast assign -> (select)? -> (sort)? -> bulk load -> sink
             IndexUtil.bindJobEventListener(spec, metadataProvider);
 
             // dummy key provider ----> primary index scan
@@ -142,7 +132,7 @@
             spec.connect(new OneToOneConnectorDescriptor(spec), sourceOp, 0, targetOp, 0);
 
             sourceOp = targetOp;
-            // primary index ----> cast assign op
+            // primary index ----> cast assign op (produces the secondary index entry)
             targetOp = createAssignOp(spec, indexDetails.getKeyFieldNames().size(), secondaryRecDesc);
             spec.connect(new OneToOneConnectorDescriptor(spec), sourceOp, 0, targetOp, 0);
 
@@ -157,14 +147,13 @@
             }
             // no need to sort if the index is secondary primary index
             if (!indexDetails.getKeyFieldNames().isEmpty()) {
-                // sort by secondary keys.
-                // assign op OR select op ----> sort op
+                // sort by <SKs,PKs>. cast assign op OR select op ----> sort op
                 targetOp = createSortOp(spec, secondaryComparatorFactories, secondaryRecDesc);
                 spec.connect(new OneToOneConnectorDescriptor(spec), sourceOp, 0, targetOp, 0);
                 sourceOp = targetOp;
             }
 
-            // assign op OR select op OR sort op ----> bulk load op
+            // cast assign op OR select op OR sort op ----> bulk load op
             targetOp = createTreeIndexBulkLoadOp(spec, fieldPermutation, dataflowHelperFactory,
                     StorageConstants.DEFAULT_TREE_FILL_FACTOR);
             spec.connect(new OneToOneConnectorDescriptor(spec), sourceOp, 0, targetOp, 0);
@@ -208,12 +197,12 @@
     @Override
     protected void setSecondaryRecDescAndComparators() throws AlgebricksException {
         Index.ValueIndexDetails indexDetails = (Index.ValueIndexDetails) index.getIndexDetails();
-        int numSecondaryKeys = indexDetails.getKeyFieldNames().size();
+        int numSecondaryKeys = getNumSecondaryKeys();
         secondaryFieldAccessEvalFactories = new IScalarEvaluatorFactory[numSecondaryKeys + numFilterFields];
         secondaryComparatorFactories = new IBinaryComparatorFactory[numSecondaryKeys + numPrimaryKeys];
         secondaryBloomFilterKeyFields = new int[numSecondaryKeys];
         ISerializerDeserializer[] secondaryRecFields =
-                new ISerializerDeserializer[numPrimaryKeys + numSecondaryKeys + numFilterFields];
+                new ISerializerDeserializer[numSecondaryKeys + numPrimaryKeys + numFilterFields];
         ISerializerDeserializer[] enforcedRecFields =
                 new ISerializerDeserializer[1 + numPrimaryKeys + (dataset.hasMetaPart() ? 1 : 0) + numFilterFields];
         ITypeTraits[] enforcedTypeTraits =
@@ -240,11 +229,14 @@
                 sourceColumn = recordColumn + 1;
                 enforcedType = enforcedMetaType;
             }
-            secondaryFieldAccessEvalFactories[i] = createFieldAccessors(i, isOverridingKeyFieldTypes, enforcedType,
-                    sourceType, sourceColumn, indexDetails, indexDetails.getKeyFieldTypes().get(i));
-            Pair<IAType, Boolean> keyTypePair = Index.getNonNullableOpenFieldType(index,
-                    indexDetails.getKeyFieldTypes().get(i), indexDetails.getKeyFieldNames().get(i), sourceType);
+            List<String> secFieldName = indexDetails.getKeyFieldNames().get(i);
+            IAType secFieldType = indexDetails.getKeyFieldTypes().get(i);
+            Pair<IAType, Boolean> keyTypePair =
+                    Index.getNonNullableOpenFieldType(index, secFieldType, secFieldName, sourceType);
             IAType keyType = keyTypePair.first;
+            IScalarEvaluatorFactory secFieldAccessor = createFieldAccessor(sourceType, sourceColumn, secFieldName);
+            secondaryFieldAccessEvalFactories[i] =
+                    createFieldCast(secFieldAccessor, isOverridingKeyFieldTypes, enforcedType, sourceType, keyType);
             anySecondaryKeyIsNullable = anySecondaryKeyIsNullable || keyTypePair.second;
             secondaryRecFields[i] = serdeProvider.getSerializerDeserializer(keyType);
             secondaryComparatorFactories[i] = comparatorFactoryProvider.getBinaryComparatorFactory(keyType, true);
@@ -278,77 +270,35 @@
         }
 
         if (numFilterFields > 0) {
-            ARecordType filterItemType =
-                    ((InternalDatasetDetails) dataset.getDatasetDetails()).getFilterSourceIndicator() == 0 ? itemType
-                            : metaType;
-            secondaryFieldAccessEvalFactories[numSecondaryKeys] = metadataProvider.getDataFormat()
-                    .getFieldAccessEvaluatorFactory(metadataProvider.getFunctionManager(), filterItemType,
-                            filterFieldName, numPrimaryKeys, sourceLoc);
-            Pair<IAType, Boolean> keyTypePair;
-            keyTypePair = Index.getNonNullableKeyFieldType(filterFieldName, filterItemType);
-            IAType type = keyTypePair.first;
-            ISerializerDeserializer serde = serdeProvider.getSerializerDeserializer(type);
+            Integer filterSourceIndicator =
+                    ((InternalDatasetDetails) dataset.getDatasetDetails()).getFilterSourceIndicator();
+            ARecordType sourceType;
+            ARecordType enforcedType;
+            int sourceColumn;
+            if (filterSourceIndicator == null || filterSourceIndicator == 0) {
+                sourceType = itemType;
+                sourceColumn = recordColumn;
+                enforcedType = enforcedItemType;
+            } else {
+                sourceType = metaType;
+                sourceColumn = recordColumn + 1;
+                enforcedType = enforcedMetaType;
+            }
+            IAType filterType = Index.getNonNullableKeyFieldType(filterFieldName, sourceType).first;
+            IScalarEvaluatorFactory filterAccessor = createFieldAccessor(sourceType, sourceColumn, filterFieldName);
+            secondaryFieldAccessEvalFactories[numSecondaryKeys] =
+                    createFieldCast(filterAccessor, isOverridingKeyFieldTypes, enforcedType, sourceType, filterType);
+            ISerializerDeserializer serde = serdeProvider.getSerializerDeserializer(filterType);
             secondaryRecFields[numPrimaryKeys + numSecondaryKeys] = serde;
             enforcedRecFields[numPrimaryKeys + 1 + (dataset.hasMetaPart() ? 1 : 0)] = serde;
             enforcedTypeTraits[numPrimaryKeys + 1 + (dataset.hasMetaPart() ? 1 : 0)] =
-                    typeTraitProvider.getTypeTrait(type);
+                    typeTraitProvider.getTypeTrait(filterType);
         }
         secondaryRecDesc = new RecordDescriptor(secondaryRecFields, secondaryTypeTraits);
         enforcedRecDesc = new RecordDescriptor(enforcedRecFields, enforcedTypeTraits);
 
     }
 
-    private IScalarEvaluatorFactory createFieldAccessors(int field, boolean isOverridingKeyFieldTypes,
-            IAType enforcedRecordType, ARecordType recordType, int recordColumn, Index.ValueIndexDetails indexDetails,
-            IAType fieldType) throws AlgebricksException {
-        IFunctionManager funManger = metadataProvider.getFunctionManager();
-        IDataFormat dataFormat = metadataProvider.getDataFormat();
-        IScalarEvaluatorFactory fieldEvalFactory = dataFormat.getFieldAccessEvaluatorFactory(funManger, recordType,
-                indexDetails.getKeyFieldNames().get(field), recordColumn, sourceLoc);
-        // check IndexUtil.castDefaultNull(index), too, because we always want to cast even if the overriding type is
-        // the same as the overridden type (this is for the case where overriding the type of closed field is allowed)
-        // e.g. field "a" is a string in the dataset ds; CREATE INDEX .. ON ds(a:string) CAST (DEFAULT NULL)
-        boolean castIndexedField = isOverridingKeyFieldTypes
-                && (!enforcedRecordType.equals(recordType) || IndexUtil.castDefaultNull(index));
-        if (!castIndexedField) {
-            return fieldEvalFactory;
-        }
-
-        IScalarEvaluatorFactory castFieldEvalFactory;
-        if (IndexUtil.castDefaultNull(index)) {
-            castFieldEvalFactory = createConstructorFunction(funManger, dataFormat, fieldEvalFactory, fieldType);
-        } else if (index.isEnforced()) {
-            IScalarEvaluatorFactory[] castArg = new IScalarEvaluatorFactory[] { fieldEvalFactory };
-            castFieldEvalFactory =
-                    createCastFunction(fieldType, BuiltinType.ANY, true, sourceLoc).createEvaluatorFactory(castArg);
-        } else {
-            IScalarEvaluatorFactory[] castArg = new IScalarEvaluatorFactory[] { fieldEvalFactory };
-            castFieldEvalFactory =
-                    createCastFunction(fieldType, BuiltinType.ANY, false, sourceLoc).createEvaluatorFactory(castArg);
-        }
-        return castFieldEvalFactory;
-    }
-
-    private IScalarEvaluatorFactory createConstructorFunction(IFunctionManager funManager, IDataFormat dataFormat,
-            IScalarEvaluatorFactory fieldEvalFactory, IAType fieldType) throws AlgebricksException {
-        IAType targetType = TypeComputeUtils.getActualType(fieldType);
-        Pair<FunctionIdentifier, IAObject> constructorWithFmt =
-                IndexUtil.getTypeConstructorDefaultNull(index, targetType, sourceLoc);
-        FunctionIdentifier typeConstructorFun = constructorWithFmt.first;
-        IFunctionDescriptor typeConstructor = funManager.lookupFunction(typeConstructorFun, sourceLoc);
-        IScalarEvaluatorFactory[] args;
-        // add the format argument if specified
-        if (constructorWithFmt.second != null) {
-            IScalarEvaluatorFactory fmtEvalFactory =
-                    dataFormat.getConstantEvalFactory(new AsterixConstantValue(constructorWithFmt.second));
-            args = new IScalarEvaluatorFactory[] { fieldEvalFactory, fmtEvalFactory };
-        } else {
-            args = new IScalarEvaluatorFactory[] { fieldEvalFactory };
-        }
-        typeConstructor.setSourceLocation(sourceLoc);
-        return typeConstructor.createEvaluatorFactory(args);
-    }
-
     private int[] createFieldPermutationForBulkLoadOp(int numSecondaryKeyFields) {
         int[] fieldPermutation = new int[numSecondaryKeyFields + numPrimaryKeys + numFilterFields];
         for (int i = 0; i < fieldPermutation.length; i++) {
@@ -356,8 +306,4 @@
         }
         return fieldPermutation;
     }
-
-    private static boolean excludeUnknowns(Index index, Index.ValueIndexDetails details) {
-        return index.isPrimaryKeyIndex() || details.getExcludeUnknownKey().getOrElse(false);
-    }
 }
diff --git a/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/utils/SecondaryCorrelatedBTreeOperationsHelper.java b/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/utils/SecondaryCorrelatedBTreeOperationsHelper.java
index 6e5bc17..c596137 100644
--- a/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/utils/SecondaryCorrelatedBTreeOperationsHelper.java
+++ b/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/utils/SecondaryCorrelatedBTreeOperationsHelper.java
@@ -67,8 +67,7 @@
         JobSpecification spec = RuntimeUtils.createJobSpecification(metadataProvider.getApplicationContext());
 
         Index.ValueIndexDetails indexDetails = (Index.ValueIndexDetails) index.getIndexDetails();
-        boolean isOverridingKeyFieldTypes = indexDetails.isOverridingKeyFieldTypes();
-
+        boolean excludeUnknown = excludeUnknownKeys(index, indexDetails, anySecondaryKeyIsNullable);
         assert dataset.getDatasetType() == DatasetType.INTERNAL;
 
         // only handle internal datasets
@@ -83,18 +82,13 @@
                 getTaggedRecordDescriptor(dataset.getPrimaryRecordDescriptor(metadataProvider)));
 
         // Assign op.
-        IOperatorDescriptor sourceOp = primaryScanOp;
-        if (isOverridingKeyFieldTypes && !enforcedItemType.equals(itemType)) {
-            sourceOp = createCastOp(spec, dataset.getDatasetType(), index.isEnforced());
-            spec.connect(new OneToOneConnectorDescriptor(spec), primaryScanOp, 0, sourceOp, 0);
-        }
         RecordDescriptor taggedSecondaryRecDesc = getTaggedRecordDescriptor(secondaryRecDesc);
         AlgebricksMetaOperatorDescriptor asterixAssignOp =
                 createAssignOp(spec, indexDetails.getKeyFieldNames().size(), taggedSecondaryRecDesc);
 
         // Generate compensate tuples for upsert
-        IOperatorDescriptor processorOp =
-                createTupleProcessorOp(spec, taggedSecondaryRecDesc, getNumSecondaryKeys(), numPrimaryKeys, false);
+        IOperatorDescriptor processorOp = createTupleProcessorOp(spec, taggedSecondaryRecDesc, getNumSecondaryKeys(),
+                numPrimaryKeys, false, excludeUnknown, false);
 
         ExternalSortOperatorDescriptor sortOp = createSortOp(spec,
                 getTaggedSecondaryComparatorFactories(secondaryComparatorFactories), taggedSecondaryRecDesc);
@@ -111,7 +105,7 @@
         metaOp.setSourceLocation(sourceLoc);
         // Connect the operators.
         spec.connect(new OneToOneConnectorDescriptor(spec), keyProviderOp, 0, primaryScanOp, 0);
-        spec.connect(new OneToOneConnectorDescriptor(spec), sourceOp, 0, asterixAssignOp, 0);
+        spec.connect(new OneToOneConnectorDescriptor(spec), primaryScanOp, 0, asterixAssignOp, 0);
         spec.connect(new OneToOneConnectorDescriptor(spec), asterixAssignOp, 0, processorOp, 0);
         spec.connect(new OneToOneConnectorDescriptor(spec), processorOp, 0, sortOp, 0);
         spec.connect(new OneToOneConnectorDescriptor(spec), sortOp, 0, secondaryBulkLoadOp, 0);
@@ -129,12 +123,12 @@
     @Override
     protected void setSecondaryRecDescAndComparators() throws AlgebricksException {
         Index.ValueIndexDetails indexDetails = (Index.ValueIndexDetails) index.getIndexDetails();
-        int numSecondaryKeys = indexDetails.getKeyFieldNames().size();
+        int numSecondaryKeys = getNumSecondaryKeys();
         secondaryFieldAccessEvalFactories = new IScalarEvaluatorFactory[numSecondaryKeys + numFilterFields];
         secondaryComparatorFactories = new IBinaryComparatorFactory[numSecondaryKeys + numPrimaryKeys];
         secondaryBloomFilterKeyFields = new int[numSecondaryKeys];
         ISerializerDeserializer[] secondaryRecFields =
-                new ISerializerDeserializer[numPrimaryKeys + numSecondaryKeys + numFilterFields];
+                new ISerializerDeserializer[numSecondaryKeys + numPrimaryKeys + numFilterFields];
         ISerializerDeserializer[] enforcedRecFields =
                 new ISerializerDeserializer[1 + numPrimaryKeys + (dataset.hasMetaPart() ? 1 : 0) + numFilterFields];
         ITypeTraits[] enforcedTypeTraits =
@@ -144,29 +138,32 @@
         ITypeTraitProvider typeTraitProvider = metadataProvider.getDataFormat().getTypeTraitProvider();
         IBinaryComparatorFactoryProvider comparatorFactoryProvider =
                 metadataProvider.getDataFormat().getBinaryComparatorFactoryProvider();
-        // Record column is 0 for external datasets, numPrimaryKeys for internal ones
         int recordColumn = NUM_TAG_FIELDS + numPrimaryKeys;
         boolean isOverridingKeyTypes = indexDetails.isOverridingKeyFieldTypes();
         for (int i = 0; i < numSecondaryKeys; i++) {
             ARecordType sourceType;
+            ARecordType enforcedType;
             int sourceColumn;
             List<Integer> keySourceIndicators = indexDetails.getKeyFieldSourceIndicators();
             if (keySourceIndicators == null || keySourceIndicators.get(i) == 0) {
                 sourceType = itemType;
                 sourceColumn = recordColumn;
+                enforcedType = enforcedItemType;
             } else {
                 sourceType = metaType;
                 sourceColumn = recordColumn + 1;
+                enforcedType = enforcedMetaType;
             }
-            secondaryFieldAccessEvalFactories[i] = metadataProvider.getDataFormat().getFieldAccessEvaluatorFactory(
-                    metadataProvider.getFunctionManager(), isOverridingKeyTypes ? enforcedItemType : sourceType,
-                    indexDetails.getKeyFieldNames().get(i), sourceColumn, sourceLoc);
-            Pair<IAType, Boolean> keyTypePair = Index.getNonNullableOpenFieldType(index,
-                    indexDetails.getKeyFieldTypes().get(i), indexDetails.getKeyFieldNames().get(i), sourceType);
+            List<String> secFieldName = indexDetails.getKeyFieldNames().get(i);
+            IAType secFieldType = indexDetails.getKeyFieldTypes().get(i);
+            Pair<IAType, Boolean> keyTypePair =
+                    Index.getNonNullableOpenFieldType(index, secFieldType, secFieldName, sourceType);
             IAType keyType = keyTypePair.first;
+            IScalarEvaluatorFactory secFieldAccessor = createFieldAccessor(sourceType, sourceColumn, secFieldName);
+            secondaryFieldAccessEvalFactories[i] =
+                    createFieldCast(secFieldAccessor, isOverridingKeyTypes, enforcedType, sourceType, keyType);
             anySecondaryKeyIsNullable = anySecondaryKeyIsNullable || keyTypePair.second;
-            ISerializerDeserializer keySerde = serdeProvider.getSerializerDeserializer(keyType);
-            secondaryRecFields[i] = keySerde;
+            secondaryRecFields[i] = serdeProvider.getSerializerDeserializer(keyType);
             secondaryComparatorFactories[i] = comparatorFactoryProvider.getBinaryComparatorFactory(keyType, true);
             secondaryTypeTraits[i] = typeTraitProvider.getTypeTrait(keyType);
             secondaryBloomFilterKeyFields[i] = i;
@@ -188,20 +185,29 @@
         }
 
         if (numFilterFields > 0) {
-            ARecordType filterItemType =
-                    ((InternalDatasetDetails) dataset.getDatasetDetails()).getFilterSourceIndicator() == 0 ? itemType
-                            : metaType;
-            secondaryFieldAccessEvalFactories[numSecondaryKeys] = metadataProvider.getDataFormat()
-                    .getFieldAccessEvaluatorFactory(metadataProvider.getFunctionManager(), filterItemType,
-                            filterFieldName, recordColumn, sourceLoc);
-            Pair<IAType, Boolean> keyTypePair;
-            keyTypePair = Index.getNonNullableKeyFieldType(filterFieldName, filterItemType);
-            IAType type = keyTypePair.first;
-            ISerializerDeserializer serde = serdeProvider.getSerializerDeserializer(type);
+            Integer filterSourceIndicator =
+                    ((InternalDatasetDetails) dataset.getDatasetDetails()).getFilterSourceIndicator();
+            ARecordType sourceType;
+            ARecordType enforcedType;
+            int sourceColumn;
+            if (filterSourceIndicator == null || filterSourceIndicator == 0) {
+                sourceType = itemType;
+                sourceColumn = recordColumn;
+                enforcedType = enforcedItemType;
+            } else {
+                sourceType = metaType;
+                sourceColumn = recordColumn + 1;
+                enforcedType = enforcedMetaType;
+            }
+            IAType filterType = Index.getNonNullableKeyFieldType(filterFieldName, sourceType).first;
+            IScalarEvaluatorFactory filterAccessor = createFieldAccessor(sourceType, sourceColumn, filterFieldName);
+            secondaryFieldAccessEvalFactories[numSecondaryKeys] =
+                    createFieldCast(filterAccessor, isOverridingKeyTypes, enforcedType, sourceType, filterType);
+            ISerializerDeserializer serde = serdeProvider.getSerializerDeserializer(filterType);
             secondaryRecFields[numPrimaryKeys + numSecondaryKeys] = serde;
             enforcedRecFields[numPrimaryKeys + 1 + (dataset.hasMetaPart() ? 1 : 0)] = serde;
             enforcedTypeTraits[numPrimaryKeys + 1 + (dataset.hasMetaPart() ? 1 : 0)] =
-                    typeTraitProvider.getTypeTrait(type);
+                    typeTraitProvider.getTypeTrait(filterType);
         }
         secondaryRecDesc = new RecordDescriptor(secondaryRecFields, secondaryTypeTraits);
         enforcedRecDesc = new RecordDescriptor(enforcedRecFields, enforcedTypeTraits);
diff --git a/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/utils/SecondaryCorrelatedInvertedIndexOperationsHelper.java b/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/utils/SecondaryCorrelatedInvertedIndexOperationsHelper.java
index a50f50c..00cc595 100644
--- a/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/utils/SecondaryCorrelatedInvertedIndexOperationsHelper.java
+++ b/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/utils/SecondaryCorrelatedInvertedIndexOperationsHelper.java
@@ -239,8 +239,8 @@
                 createAssignOp(spec, numSecondaryKeys, taggedSecondaryRecDesc);
 
         // Generate compensate tuples for upsert
-        IOperatorDescriptor processorOp =
-                createTupleProcessorOp(spec, taggedSecondaryRecDesc, numSecondaryKeys, numPrimaryKeys, true);
+        IOperatorDescriptor processorOp = createTupleProcessorOp(spec, taggedSecondaryRecDesc, numSecondaryKeys,
+                numPrimaryKeys, true, true, true);
 
         // Create a tokenizer op.
         AbstractOperatorDescriptor tokenizerOp = createTokenizerOp(spec);
diff --git a/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/utils/SecondaryCorrelatedRTreeOperationsHelper.java b/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/utils/SecondaryCorrelatedRTreeOperationsHelper.java
index ff5b021..e26aab3 100644
--- a/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/utils/SecondaryCorrelatedRTreeOperationsHelper.java
+++ b/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/utils/SecondaryCorrelatedRTreeOperationsHelper.java
@@ -207,7 +207,7 @@
 
         // Generate compensate tuples for upsert
         IOperatorDescriptor processorOp = createTupleProcessorOp(spec, secondaryRecDescConsideringPointMBR,
-                numNestedSecondaryKeFieldsConsideringPointMBR, numPrimaryKeys, false);
+                numNestedSecondaryKeFieldsConsideringPointMBR, numPrimaryKeys, false, true, true);
 
         ExternalSortOperatorDescriptor sortOp = createSortOp(spec,
                 getTaggedSecondaryComparatorFactories(new IBinaryComparatorFactory[] {
diff --git a/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/utils/SecondaryCorrelatedTreeIndexOperationsHelper.java b/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/utils/SecondaryCorrelatedTreeIndexOperationsHelper.java
index 06df020..1a65869 100644
--- a/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/utils/SecondaryCorrelatedTreeIndexOperationsHelper.java
+++ b/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/utils/SecondaryCorrelatedTreeIndexOperationsHelper.java
@@ -247,10 +247,11 @@
     }
 
     protected IOperatorDescriptor createTupleProcessorOp(JobSpecification spec, RecordDescriptor taggedSecondaryRecDesc,
-            int numSecondaryKeyFields, int numPrimaryKeyFields, boolean hasBuddyBTree) {
+            int numSecondaryKeyFields, int numPrimaryKeyFields, boolean hasBuddyBTree, boolean excludeUnknownKeys,
+            boolean forAnyUnknownKey) {
         IOperatorDescriptor op = new LSMSecondaryIndexCreationTupleProcessorOperatorDescriptor(spec,
                 taggedSecondaryRecDesc, MissingWriterFactory.INSTANCE, NUM_TAG_FIELDS, numSecondaryKeyFields,
-                numPrimaryKeyFields, hasBuddyBTree);
+                numPrimaryKeyFields, hasBuddyBTree, excludeUnknownKeys, forAnyUnknownKey);
         op.setSourceLocation(sourceLoc);
         AlgebricksPartitionConstraintHelper.setPartitionConstraintInJobSpec(spec, op, primaryPartitionConstraint);
         return op;
diff --git a/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/utils/SecondaryIndexOperationsHelper.java b/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/utils/SecondaryIndexOperationsHelper.java
index 035ae74..8be248b 100644
--- a/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/utils/SecondaryIndexOperationsHelper.java
+++ b/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/utils/SecondaryIndexOperationsHelper.java
@@ -35,6 +35,7 @@
 import org.apache.asterix.external.operators.ExternalIndexBulkLoadOperatorDescriptor;
 import org.apache.asterix.external.operators.ExternalIndexBulkModifyOperatorDescriptor;
 import org.apache.asterix.external.operators.ExternalScanOperatorDescriptor;
+import org.apache.asterix.formats.base.IDataFormat;
 import org.apache.asterix.formats.nontagged.BinaryBooleanInspector;
 import org.apache.asterix.formats.nontagged.BinaryComparatorFactoryProvider;
 import org.apache.asterix.formats.nontagged.SerializerDeserializerProvider;
@@ -44,10 +45,15 @@
 import org.apache.asterix.metadata.entities.Index;
 import org.apache.asterix.metadata.entities.InternalDatasetDetails;
 import org.apache.asterix.metadata.lock.ExternalDatasetsRegistry;
+import org.apache.asterix.om.base.IAObject;
+import org.apache.asterix.om.constants.AsterixConstantValue;
 import org.apache.asterix.om.functions.AbstractFunctionDescriptor;
 import org.apache.asterix.om.functions.BuiltinFunctions;
 import org.apache.asterix.om.functions.IFunctionDescriptor;
+import org.apache.asterix.om.functions.IFunctionManager;
+import org.apache.asterix.om.typecomputer.impl.TypeComputeUtils;
 import org.apache.asterix.om.types.ARecordType;
+import org.apache.asterix.om.types.BuiltinType;
 import org.apache.asterix.om.types.IAType;
 import org.apache.asterix.runtime.evaluators.functions.AndDescriptor;
 import org.apache.asterix.runtime.evaluators.functions.IsUnknownDescriptor;
@@ -59,6 +65,7 @@
 import org.apache.hyracks.algebricks.common.constraints.AlgebricksPartitionConstraintHelper;
 import org.apache.hyracks.algebricks.common.exceptions.AlgebricksException;
 import org.apache.hyracks.algebricks.common.utils.Pair;
+import org.apache.hyracks.algebricks.core.algebra.functions.FunctionIdentifier;
 import org.apache.hyracks.algebricks.data.ISerializerDeserializerProvider;
 import org.apache.hyracks.algebricks.runtime.base.IPushRuntimeFactory;
 import org.apache.hyracks.algebricks.runtime.base.IScalarEvaluatorFactory;
@@ -282,6 +289,63 @@
         primaryRecDesc = new RecordDescriptor(primaryRecFields, primaryTypeTraits);
     }
 
+    protected IScalarEvaluatorFactory createFieldAccessor(ARecordType recordType, int recordColumn,
+            List<String> fieldName) throws AlgebricksException {
+        IFunctionManager funManger = metadataProvider.getFunctionManager();
+        IDataFormat dataFormat = metadataProvider.getDataFormat();
+        return dataFormat.getFieldAccessEvaluatorFactory(funManger, recordType, fieldName, recordColumn, sourceLoc);
+    }
+
+    protected IScalarEvaluatorFactory createFieldCast(IScalarEvaluatorFactory fieldEvalFactory,
+            boolean isOverridingKeyFieldTypes, IAType enforcedRecordType, ARecordType recordType, IAType targetType)
+            throws AlgebricksException {
+        IFunctionManager funManger = metadataProvider.getFunctionManager();
+        IDataFormat dataFormat = metadataProvider.getDataFormat();
+
+        // check IndexUtil.castDefaultNull(index), too, because we always want to cast even if the overriding type is
+        // the same as the overridden type (this is for the case where overriding the type of closed field is allowed)
+        // e.g. field "a" is a string in the dataset ds; CREATE INDEX .. ON ds(a:string) CAST (DEFAULT NULL)
+        boolean castIndexedField = isOverridingKeyFieldTypes
+                && (!enforcedRecordType.equals(recordType) || IndexUtil.castDefaultNull(index));
+        if (!castIndexedField) {
+            return fieldEvalFactory;
+        }
+
+        IScalarEvaluatorFactory castFieldEvalFactory;
+        if (IndexUtil.castDefaultNull(index)) {
+            castFieldEvalFactory = createConstructorFunction(funManger, dataFormat, fieldEvalFactory, targetType);
+        } else if (index.isEnforced()) {
+            IScalarEvaluatorFactory[] castArg = new IScalarEvaluatorFactory[] { fieldEvalFactory };
+            castFieldEvalFactory =
+                    createCastFunction(targetType, BuiltinType.ANY, true, sourceLoc).createEvaluatorFactory(castArg);
+        } else {
+            IScalarEvaluatorFactory[] castArg = new IScalarEvaluatorFactory[] { fieldEvalFactory };
+            castFieldEvalFactory =
+                    createCastFunction(targetType, BuiltinType.ANY, false, sourceLoc).createEvaluatorFactory(castArg);
+        }
+        return castFieldEvalFactory;
+    }
+
+    protected IScalarEvaluatorFactory createConstructorFunction(IFunctionManager funManager, IDataFormat dataFormat,
+            IScalarEvaluatorFactory fieldEvalFactory, IAType fieldType) throws AlgebricksException {
+        IAType targetType = TypeComputeUtils.getActualType(fieldType);
+        Pair<FunctionIdentifier, IAObject> constructorWithFmt =
+                IndexUtil.getTypeConstructorDefaultNull(index, targetType, sourceLoc);
+        FunctionIdentifier typeConstructorFun = constructorWithFmt.first;
+        IFunctionDescriptor typeConstructor = funManager.lookupFunction(typeConstructorFun, sourceLoc);
+        IScalarEvaluatorFactory[] args;
+        // add the format argument if specified
+        if (constructorWithFmt.second != null) {
+            IScalarEvaluatorFactory fmtEvalFactory =
+                    dataFormat.getConstantEvalFactory(new AsterixConstantValue(constructorWithFmt.second));
+            args = new IScalarEvaluatorFactory[] { fieldEvalFactory, fmtEvalFactory };
+        } else {
+            args = new IScalarEvaluatorFactory[] { fieldEvalFactory };
+        }
+        typeConstructor.setSourceLocation(sourceLoc);
+        return typeConstructor.createEvaluatorFactory(args);
+    }
+
     protected AlgebricksMetaOperatorDescriptor createAssignOp(JobSpecification spec, int numSecondaryKeyFields,
             RecordDescriptor secondaryRecDesc) throws AlgebricksException {
         int[] outColumns = new int[numSecondaryKeyFields + numFilterFields];
@@ -343,11 +407,12 @@
                 new RecordDescriptor[] { enforcedRecDesc });
     }
 
-    IFunctionDescriptor createCastFunction(boolean strictCast, SourceLocation sourceLoc) throws AlgebricksException {
+    protected IFunctionDescriptor createCastFunction(boolean strictCast, SourceLocation sourceLoc)
+            throws AlgebricksException {
         return createCastFunction(enforcedItemType, itemType, strictCast, sourceLoc);
     }
 
-    IFunctionDescriptor createCastFunction(IAType targetType, IAType inputType, boolean strictCast,
+    protected IFunctionDescriptor createCastFunction(IAType targetType, IAType inputType, boolean strictCast,
             SourceLocation sourceLoc) throws AlgebricksException {
         IFunctionDescriptor castFuncDesc = metadataProvider.getFunctionManager()
                 .lookupFunction(strictCast ? BuiltinFunctions.CAST_TYPE : BuiltinFunctions.CAST_TYPE_LAX, sourceLoc);
@@ -369,6 +434,15 @@
         return sortOp;
     }
 
+    protected static boolean excludeUnknownKeys(Index index, Index.ValueIndexDetails details,
+            boolean anySecKeyIsNullable) {
+        return excludeUnknowns(index, details) && (anySecKeyIsNullable || details.isOverridingKeyFieldTypes());
+    }
+
+    private static boolean excludeUnknowns(Index index, Index.ValueIndexDetails details) {
+        return index.isPrimaryKeyIndex() || details.getExcludeUnknownKey().getOrElse(false);
+    }
+
     protected LSMIndexBulkLoadOperatorDescriptor createTreeIndexBulkLoadOp(JobSpecification spec,
             int[] fieldPermutation, IIndexDataflowHelperFactory dataflowHelperFactory, float fillFactor) {
         IndexDataflowHelperFactory primaryIndexDataflowHelperFactory = new IndexDataflowHelperFactory(
diff --git a/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/utils/TypeUtil.java b/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/utils/TypeUtil.java
index cef963f..5201a6a 100644
--- a/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/utils/TypeUtil.java
+++ b/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/utils/TypeUtil.java
@@ -307,7 +307,7 @@
                 // choose the type specified in the DDL over the type in the dataset schema if CAST is used
                 if (castDefaultNull) {
                     recordNameTypesMap.put(keyFieldNames.get(keyFieldNames.size() - 1),
-                            nestArrayType(keyFieldType, isKeyTypeWithUnnest));
+                            AUnionType.createNullableType(nestArrayType(keyFieldType, isKeyTypeWithUnnest)));
                 } else if (!ATypeHierarchy.canPromote(enforcedFieldType.getTypeTag(), this.keyFieldType.getTypeTag())) {
                     throw new AsterixException(ErrorCode.COMPILATION_ERROR, "Cannot enforce field \""
                             + String.join(".", this.keyFieldNames) + "\" to have type " + this.keyFieldType);
diff --git a/asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/operators/LSMSecondaryIndexCreationTupleProcessorNodePushable.java b/asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/operators/LSMSecondaryIndexCreationTupleProcessorNodePushable.java
index c5e8a53..f09df2e 100644
--- a/asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/operators/LSMSecondaryIndexCreationTupleProcessorNodePushable.java
+++ b/asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/operators/LSMSecondaryIndexCreationTupleProcessorNodePushable.java
@@ -82,6 +82,8 @@
     private DataOutput dos;
     private final IMissingWriter missingWriter;
     private DeletedTupleCounter deletedTupleCounter;
+    private final boolean excludeUnknownKeys;
+    private final boolean forAnyUnknownKey;
 
     public static class DeletedTupleCounter extends AbstractStateObject {
         private final Map<Integer, Integer> map = new HashMap<>();
@@ -102,12 +104,14 @@
 
     public LSMSecondaryIndexCreationTupleProcessorNodePushable(IHyracksTaskContext ctx, int partition,
             RecordDescriptor inputRecDesc, IMissingWriterFactory missingWriterFactory, int numTagFields,
-            int numSecondaryKeys, int numPrimaryKeys, boolean hasBuddyBTree) throws HyracksDataException {
+            int numSecondaryKeys, int numPrimaryKeys, boolean hasBuddyBTree, boolean excludeUnknownKeys,
+            boolean forAnyUnknownKey) throws HyracksDataException {
 
         super(ctx, partition, inputRecDesc, numTagFields, numSecondaryKeys, numPrimaryKeys, hasBuddyBTree);
 
         this.prevMatterTupleBuilder = new ArrayTupleBuilder(inputRecDesc.getFieldCount());
-
+        this.excludeUnknownKeys = excludeUnknownKeys;
+        this.forAnyUnknownKey = forAnyUnknownKey;
         if (this.hasBuddyBTree) {
             missingWriter = missingWriterFactory.createMissingWriter();
         } else {
@@ -192,16 +196,16 @@
 
     private void processMatterTuple(ITupleReference tuple) throws HyracksDataException {
 
-        boolean isNewValueMissing = isSecondaryKeyMissing(tuple);
-        boolean isOldValueMissing = !hasPrevMatterTuple || !equalPrimaryKeys(tuple, prevMatterTuple)
-                || isSecondaryKeyMissing(prevMatterTuple);
+        boolean skipNewValue = skipTuple(tuple);
+        boolean skipOldValue =
+                !hasPrevMatterTuple || !equalPrimaryKeys(tuple, prevMatterTuple) || skipTuple(prevMatterTuple);
 
-        if (isNewValueMissing && isOldValueMissing) {
+        if (skipNewValue && skipOldValue) {
             // if both values are missing, then do nothing
             return;
         }
         // At least one is not null
-        if (!isOldValueMissing && equalSecondaryKeys(prevMatterTuple, tuple)) {
+        if (!skipOldValue && equalSecondaryKeys(prevMatterTuple, tuple)) {
             if (hasBuddyBTree) {
                 // if the index has buddy btree, then we have to delete the index entry
                 // from the older disk components
@@ -211,11 +215,11 @@
             writeMatterTuple(tuple);
             return;
         }
-        if (!isOldValueMissing) {
+        if (!skipOldValue) {
             // we need to delete the previous entry
             writeAntiMatterTuple(prevMatterTuple, getComponentPos(tuple));
         }
-        if (!isNewValueMissing) {
+        if (!skipNewValue) {
             // we need to insert the new entry
             writeMatterTuple(tuple);
         }
@@ -223,10 +227,10 @@
     }
 
     private void processAntiMatterTuple(ITupleReference tuple) throws HyracksDataException {
-        boolean isNewValueMissing = isSecondaryKeyMissing(tuple);
+        boolean skipNewValue = skipTuple(tuple);
         // if the secondary value is missing (which means the secondary value of the previous matter tuple
         // is also missing), we then simply ignore this tuple since there is nothing to delete
-        if (!isNewValueMissing) {
+        if (!skipNewValue) {
             writeAntiMatterTuple(tuple, getComponentPos(tuple));
         }
     }
@@ -264,7 +268,12 @@
         FrameUtils.appendToWriter(writer, appender, tb.getFieldEndOffsets(), tb.getByteArray(), 0, tb.getSize());
     }
 
-    private boolean isSecondaryKeyMissing(ITupleReference tuple) {
+    private boolean skipTuple(ITupleReference tuple) {
+        return excludeUnknownKeys
+                && (forAnyUnknownKey ? isAnySecondaryKeyMissing(tuple) : isAllSecondaryKeysMissing(tuple));
+    }
+
+    private boolean isAnySecondaryKeyMissing(ITupleReference tuple) {
         for (int i = numTagFields; i < numTagFields + numSecondaryKeys; i++) {
             if (TypeTagUtil.isType(tuple, i, ATypeTag.SERIALIZED_MISSING_TYPE_TAG)
                     || TypeTagUtil.isType(tuple, i, ATypeTag.SERIALIZED_NULL_TYPE_TAG)) {
@@ -274,6 +283,16 @@
         return false;
     }
 
+    private boolean isAllSecondaryKeysMissing(ITupleReference tuple) {
+        for (int i = numTagFields; i < numTagFields + numSecondaryKeys; i++) {
+            if (!TypeTagUtil.isType(tuple, i, ATypeTag.SERIALIZED_MISSING_TYPE_TAG)
+                    && !TypeTagUtil.isType(tuple, i, ATypeTag.SERIALIZED_NULL_TYPE_TAG)) {
+                return false;
+            }
+        }
+        return true;
+    }
+
     private boolean equalPrimaryKeys(ITupleReference tuple1, ITupleReference tuple2) {
         for (int i = numTagFields + numSecondaryKeys; i < numTagFields + numPrimaryKeys + numSecondaryKeys; i++) {
             if (!TupleUtils.equalFields(tuple1, tuple2, i)) {
diff --git a/asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/operators/LSMSecondaryIndexCreationTupleProcessorOperatorDescriptor.java b/asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/operators/LSMSecondaryIndexCreationTupleProcessorOperatorDescriptor.java
index 68e7603..f788d23 100644
--- a/asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/operators/LSMSecondaryIndexCreationTupleProcessorOperatorDescriptor.java
+++ b/asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/operators/LSMSecondaryIndexCreationTupleProcessorOperatorDescriptor.java
@@ -31,7 +31,7 @@
 public class LSMSecondaryIndexCreationTupleProcessorOperatorDescriptor
         extends AbstractSingleActivityOperatorDescriptor {
 
-    private static final long serialVersionUID = 1L;
+    private static final long serialVersionUID = 2L;
 
     private final IMissingWriterFactory missingWriterFactory;
 
@@ -40,10 +40,13 @@
     private final int numPrimaryKeys;
 
     private final boolean hasBuddyBTree;
+    private final boolean excludeUnknownKeys;
+    private final boolean forAnyUnknownKey;
 
     public LSMSecondaryIndexCreationTupleProcessorOperatorDescriptor(IOperatorDescriptorRegistry spec,
             RecordDescriptor outRecDesc, IMissingWriterFactory missingWriterFactory, int numTagFields,
-            int numSecondaryKeys, int numPrimaryKeys, boolean hasBuddyBTree) {
+            int numSecondaryKeys, int numPrimaryKeys, boolean hasBuddyBTree, boolean excludeUnknownKeys,
+            boolean forAnyUnknownKey) {
         super(spec, 1, 1);
         this.outRecDescs[0] = outRecDesc;
         this.missingWriterFactory = missingWriterFactory;
@@ -51,6 +54,8 @@
         this.numSecondaryKeys = numSecondaryKeys;
         this.numPrimaryKeys = numPrimaryKeys;
         this.hasBuddyBTree = hasBuddyBTree;
+        this.excludeUnknownKeys = excludeUnknownKeys;
+        this.forAnyUnknownKey = forAnyUnknownKey;
     }
 
     @Override
@@ -58,6 +63,6 @@
             IRecordDescriptorProvider recordDescProvider, int partition, int nPartitions) throws HyracksDataException {
         return new LSMSecondaryIndexCreationTupleProcessorNodePushable(ctx, partition,
                 recordDescProvider.getInputRecordDescriptor(getActivityId(), 0), missingWriterFactory, numTagFields,
-                numSecondaryKeys, numPrimaryKeys, hasBuddyBTree);
+                numSecondaryKeys, numPrimaryKeys, hasBuddyBTree, excludeUnknownKeys, forAnyUnknownKey);
     }
 }
diff --git a/asterixdb/asterix-runtime/src/test/java/org/apache/asterix/runtime/operators/LSMSecondaryIndexCreationTupleProcessorTest.java b/asterixdb/asterix-runtime/src/test/java/org/apache/asterix/runtime/operators/LSMSecondaryIndexCreationTupleProcessorTest.java
index 1db124a..81b5c12 100644
--- a/asterixdb/asterix-runtime/src/test/java/org/apache/asterix/runtime/operators/LSMSecondaryIndexCreationTupleProcessorTest.java
+++ b/asterixdb/asterix-runtime/src/test/java/org/apache/asterix/runtime/operators/LSMSecondaryIndexCreationTupleProcessorTest.java
@@ -273,7 +273,7 @@
 
         LSMSecondaryIndexCreationTupleProcessorNodePushable op =
                 new LSMSecondaryIndexCreationTupleProcessorNodePushable(ctx, 0, recDesc, MissingWriterFactory.INSTANCE,
-                        numTagFields, numSecondaryKeys, numPrimaryKeys, hasBuddyBTree);
+                        numTagFields, numSecondaryKeys, numPrimaryKeys, hasBuddyBTree, true, true);
         op.setOutputFrameWriter(0, resultWriter, recDesc);
 
         op.open();