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  1. MariaDB ColumnStore
  2. MCOL-6553

Columnstore should support FILTER clause for aggregate expressions

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    • New Feature
    • Status: Open (View Workflow)
    • Major
    • Resolution: Unresolved
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    Description

      This is followup to https://jira.mariadb.org/browse/MCOL-6534

      The fix by S. Petrunia there, as implemented, produces "Not implemented" error (instead of incorrect behavior).

      The simple approach to support filtering predicate, namely, to replace non-passing values with NULL, suggested there, will not work for COUNT( * ), but appears to work with other aggregates. So this ticket is to implement this simplest approach and return "Not supported" error only for COUNT( * ) and, possibly, something else (hopefully not).

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            Unassigned Unassigned
            sergey.zefirov Sergey Zefirov
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