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  1. Calcite
  2. CALCITE-2848

Simplifying a case statement's first branch should ignore its safety

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    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 1.19.0
    • Component/s: None

      Description

      Example: a very simple CASE which is not get rewritten because the first condition branch contains an unknown UDF

      CASE
       WHEN to_date('2001-11-11') = '2000' THEN true
       ELSE false
      END
      

      This expression right now retained as is; because the "to_date" was an unknown UDF; but since the first branch of a CASE is always evaluated and that could unlock the rewrite of this case to it's boolean form.

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              • Assignee:
                kgyrtkirk Zoltan Haindrich
                Reporter:
                kgyrtkirk Zoltan Haindrich
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