[NO ISSUE] Minor utility additions

- user model changes: no
- storage format changes: no
- interface changes: no

Change-Id: I03b25bf7a1faf05a4738076c0834ef7135c8825c
Reviewed-on: https://asterix-gerrit.ics.uci.edu/c/asterixdb/+/7806
Integration-Tests: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: Murtadha Hubail <mhubail@apache.org>
diff --git a/asterixdb/asterix-lang-sqlpp/src/main/java/org/apache/asterix/lang/sqlpp/util/SqlppStatementUtil.java b/asterixdb/asterix-lang-sqlpp/src/main/java/org/apache/asterix/lang/sqlpp/util/SqlppStatementUtil.java
index ba6d9e4..5281dd9 100644
--- a/asterixdb/asterix-lang-sqlpp/src/main/java/org/apache/asterix/lang/sqlpp/util/SqlppStatementUtil.java
+++ b/asterixdb/asterix-lang-sqlpp/src/main/java/org/apache/asterix/lang/sqlpp/util/SqlppStatementUtil.java
@@ -34,6 +34,9 @@
     public static final String DROP_INDEX = "DROP INDEX ";
     public static final String ON = " ON ";
     public static final String WHERE = " WHERE ";
+    public static final String AND = " AND ";
+    public static final String OR = " OR ";
+    public static final String NOT = " NOT ";
     public static final char SEMI_COLON = ';';
     public static final char DOT = '.';
     public static final char COLON = ':';