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  1. MariaDB ColumnStore
  2. MCOL-5116

Detect impossible predicates in WHERE and HAVING filters

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Details

    • New Feature
    • Status: Open (View Workflow)
    • Major
    • Resolution: Unresolved
    • None
    • Icebox
    • ExeMgr, PrimProc
    • None

    Description

      There are cases when MCS start processing queries with impossible conditions that must return empty set, e.g. SELECT * FROM t1 WHERE t1.c1 = 1 AND t1.c1 = 2.
      The server has code sections that detects impossible conditions in both WHERE and HAVING so their logic should be reused.

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            maxmether Max Mether
            drrtuy Roman
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              Created:
              Updated:

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