amansinha100 commented on code in PR #4277:
URL: https://github.com/apache/hive/pull/4277#discussion_r1181113249
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ql/src/java/org/apache/hadoop/hive/ql/optimizer/calcite/rules/views/HiveAggregateIncrementalRewritingRuleBase.java:
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@@ -142,10 +142,13 @@ public void onMatch(RelOptRuleCall call) {
// Note: If both are null, we will fall into branch WHEN leftNull
THEN rightRef
RexNode leftNull = rexBuilder.makeCall(SqlStdOperatorTable.IS_NULL,
leftRef);
RexNode rightNull = rexBuilder.makeCall(SqlStdOperatorTable.IS_NULL,
rightRef);
- projExprs.add(rexBuilder.makeCall(SqlStdOperatorTable.CASE,
+ RexNode caseExpression = rexBuilder.makeCall(SqlStdOperatorTable.CASE,
leftNull, rightRef,
rightNull, leftRef,
- elseReturn));
+ elseReturn);
+ RexNode cast = rexBuilder.makeCast(
Review Comment:
Will this introduce a CAST even when the CAST was not needed ?
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