twalthr commented on code in PR #19409:
URL: https://github.com/apache/flink/pull/19409#discussion_r867767879
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flink-table/flink-table-planner/src/main/java/org/apache/calcite/rex/RexSimplify.java:
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@@ -2024,7 +2029,9 @@ private RexNode simplifySearch(RexCall call, RexUnknownAs
unknownAs) {
private RexNode simplifyCast(RexCall e) {
RexNode operand = e.getOperands().get(0);
operand = simplify(operand, UNKNOWN);
- if (sameTypeOrNarrowsNullability(e.getType(), operand.getType())) {
+ if (sameTypeOrNarrowsNullability(e.getType(), operand.getType())
Review Comment:
The change in this line and in `RexLiteral` is a blocker for this PR in my
opinion. We should fix these things in Calcite first and only port the changes
to the Flink code base, once merged in Calcite.
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