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  1. MariaDB ColumnStore
  2. MCOL-4574

Move all MDB rewrites MCS needs into the plugin

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    Details

    • Type: Task
    • Status: Closed (View Workflow)
    • Priority: Major
    • Resolution: Duplicate
    • Affects Version/s: 5.5.1
    • Fix Version/s: 6.3.1
    • Component/s: Connector
    • Labels:
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      Description

      Columnstore depends on a number of handy rewrites that MDB does, namely outter to inner join rewrite, IN into EXISTS conversion for IN + subquery.
      This dependency affects Columnstore, namely we can't easily implement execution path fallback b/c the mentioned rewrites change some parts of SELECT_LEX that represents the query from the perspective of MDB.
      The named rewrites must be either applied on top of CSEP after we translate from SELECT_LEX into CSEP or whilst translating inside getSelectPlan(). The former is preferable b/c the rewrites code can be reused or moved easily.

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              Assignee:
              Unassigned Unassigned
              Reporter:
              drrtuy Roman
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