diff --git a/asterixdb/asterix-lang-sqlpp/src/main/java/org/apache/asterix/lang/sqlpp/visitor/DeepCopyVisitor.java b/asterixdb/asterix-lang-sqlpp/src/main/java/org/apache/asterix/lang/sqlpp/visitor/DeepCopyVisitor.java
index 01f3524..d752396 100644
--- a/asterixdb/asterix-lang-sqlpp/src/main/java/org/apache/asterix/lang/sqlpp/visitor/DeepCopyVisitor.java
+++ b/asterixdb/asterix-lang-sqlpp/src/main/java/org/apache/asterix/lang/sqlpp/visitor/DeepCopyVisitor.java
@@ -229,7 +229,7 @@
 
     @Override
     public Query visit(Query q, Void arg) throws AsterixException {
-        return new Query(q.isTopLevel(), (Expression) q.getBody().accept(this, arg), q.getVarCounter(),
+        return new Query(q.isExplain(), q.isTopLevel(), (Expression) q.getBody().accept(this, arg), q.getVarCounter(),
                 q.getDataverses(), q.getDatasets());
     }
 
diff --git a/asterixdb/asterix-lang-sqlpp/src/main/java/org/apache/asterix/lang/sqlpp/visitor/SqlppDeleteRewriteVisitor.java b/asterixdb/asterix-lang-sqlpp/src/main/java/org/apache/asterix/lang/sqlpp/visitor/SqlppDeleteRewriteVisitor.java
index bfb1e44..a71cc47 100644
--- a/asterixdb/asterix-lang-sqlpp/src/main/java/org/apache/asterix/lang/sqlpp/visitor/SqlppDeleteRewriteVisitor.java
+++ b/asterixdb/asterix-lang-sqlpp/src/main/java/org/apache/asterix/lang/sqlpp/visitor/SqlppDeleteRewriteVisitor.java
@@ -84,7 +84,7 @@
         SelectBlock selectBlock = new SelectBlock(selectClause, fromClause, null, whereClause, null, null, null);
         SelectSetOperation selectSetOperation = new SelectSetOperation(new SetOperationInput(selectBlock, null), null);
         SelectExpression selectExpression = new SelectExpression(null, selectSetOperation, null, null, false);
-        Query query = new Query(false, selectExpression, 0, new ArrayList<>(), new ArrayList<>());
+        Query query = new Query(false, false, selectExpression, 0, new ArrayList<>(), new ArrayList<>());
         query.setBody(selectExpression);
 
         // return the delete statement.
diff --git a/asterixdb/asterix-lang-sqlpp/src/main/javacc/SQLPP.jj b/asterixdb/asterix-lang-sqlpp/src/main/javacc/SQLPP.jj
index afc970a..8f9a201 100644
--- a/asterixdb/asterix-lang-sqlpp/src/main/javacc/SQLPP.jj
+++ b/asterixdb/asterix-lang-sqlpp/src/main/javacc/SQLPP.jj
@@ -316,7 +316,8 @@
     | stmt = UpdateStatement()
     | stmt = FeedStatement()
     | stmt = CompactStatement()
-    | stmt = Query() <SEMICOLON>
+    | stmt = ExplainStatement()
+    | stmt = Query(false) <SEMICOLON>
     | stmt = RefreshExternalDatasetStatement()
     | stmt = RunStatement()
   )
@@ -925,7 +926,7 @@
   Query query;
 }
 {
-  <INSERT> <INTO> nameComponents = QualifiedName() query = Query()
+  <INSERT> <INTO> nameComponents = QualifiedName() query = Query(false)
     {
       query.setTopLevel(true);
       return new InsertStatement(nameComponents.first, nameComponents.second, query, getVarCounter());
@@ -1562,10 +1563,20 @@
     }
 }
 
-
-Query Query() throws ParseException:
+Query ExplainStatement() throws ParseException:
 {
-  Query query = new Query();
+  Query query;
+}
+{
+  "explain" query = Query(true)
+  {
+    return query;
+  }
+}
+
+Query Query(boolean explain) throws ParseException:
+{
+  Query query = new Query(explain);
   // we set the pointers to the dataverses and datasets lists to fill them with entities to be locked
   setDataverses(query.getDataverses());
   setDatasets(query.getDatasets());