xiedeyantu commented on code in PR #4400:
URL: https://github.com/apache/calcite/pull/4400#discussion_r2133901626
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core/src/test/resources/sql/planner.iq:
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@@ -147,6 +147,81 @@ EnumerableCalc(expr#0..2=[{inputs}], $f0=[$t1], $f1=[$t2])
!plan
!set planner-rules original
+# [CALCITE-7042] Eliminate nested TRIM calls, exploiting the fact that TRIM is
idempotent
Review Comment:
All the cases should be move to functions.iq. You can squashed to one sql,
like `select trim(trim(' aa ')), trim(trim(both 'c' from ' aa ')), ...;`.
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