[jira] [Created] (FLINK-4791) Fix issues caused by expression reduction

[Shang Yuanchun (Jira)]

Timo Walther created FLINK-4791:
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             Summary: Fix issues caused by expression reduction
                 Key: FLINK-4791
                 URL: https://issues.apache.org/jira/browse/FLINK-4791
             Project: Flink
          Issue Type: Bug
          Components: Table API & SQL
            Reporter: Timo Walther
            Assignee: Timo Walther


While updating {{ExpressionTestBase}} for FLINK-4294, I noticed that many expressions fail when applying the {{ReduceExpressionRule}}.



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