slinkydeveloper commented on a change in pull request #17256:
URL: https://github.com/apache/flink/pull/17256#discussion_r708265506
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File path:
flink-table/flink-table-planner/src/main/scala/org/apache/flink/table/planner/calcite/FlinkPlannerImpl.scala
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@@ -97,6 +97,7 @@ class FlinkPlannerImpl(
typeFactory,
SqlValidator.Config.DEFAULT
.withIdentifierExpansion(true)
+ .withCallRewrite(false) // Disables the rewrite of COALESCE
Review comment:
I've solved this issue disabling COALESCE operator:
https://github.com/apache/flink/pull/17256/files#diff-a0641b04c21f8ca7b7b8131e516aa6cddbaf66c6ebd01413f4b67f4d80c778c2L1114
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