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  1. Calcite
  2. CALCITE-2469

RexSimplify should optimize '(NOT x) IS NULL' to 'x IS NULL'

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Details

    • Bug
    • Status: Closed
    • Critical
    • Resolution: Fixed
    • 1.17.0
    • 1.18.0
    • core
    • None

    Description

      The RexSimplify currently optimizes '(not x) is null' to 'x is not null'. However, this is incorrect. It is same to the case '(not x) is not null'. 

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        Issue Links

          is related to

          Bug - A problem which impairs or prevents the functions of the product. CALCITE-2929 Simplification of IS NULL checks are incorrectly assuming that CAST-s are possible

          • Major - Major loss of function.
          • Closed
          relates to

          Bug - A problem which impairs or prevents the functions of the product. CALCITE-2932 DruidAdapterIT regression after 1.17 release

          • Major - Major loss of function.
          • Closed
          links to

          Web Link PR 796

          Activity

            People

              julianhyde Julian Hyde
              pzw2018 pengzhiwei
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              Dates

                Created:
                Updated:
                Resolved: