mihaibudiu commented on code in PR #4403:
URL: https://github.com/apache/calcite/pull/4403#discussion_r2112978931
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core/src/main/java/org/apache/calcite/sql/SqlKind.java:
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@@ -662,6 +662,9 @@ public enum SqlKind {
/** {@code IS NOT NULL} operator. */
IS_NOT_NULL,
+ /** {@code CAST NOT NULL} operator. */
+ CAST_NOT_NULL,
Review Comment:
I don't think we should expect every stage of the compiler to optimize code.
Conversion to Rel should be done as quickly as possible, and all
optimizations should be done on Rel form.
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