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  1. MariaDB ColumnStore
  2. MCOL-5116

Detect impossible predicates in WHERE and HAVING filters

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    Details

    • Type: New Feature
    • Status: Open (View Workflow)
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: Icebox
    • Component/s: ExeMgr, PrimProc
    • Labels:
      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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            Assignee:
            toddstoffel Todd Stoffel
            Reporter:
            drrtuy Roman
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              Dates

              Created:
              Updated:

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