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  1. Calcite
  2. CALCITE-711

Cardinality provider for use by lattice algorithm

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Duplicate
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: None
    • Labels:
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      Description

      Define a cardinality provider SPI for use by the lattice recommendation algorithm. Also:

      • Obsolete Lattice.CARDINALITY_MAP (by wrapping it in a mock provider).
      • Create a JDBC cardinality provider, that gets cardinality by executing "count(distinct ...)".

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              • Assignee:
                julianhyde Julian Hyde
                Reporter:
                julianhyde Julian Hyde
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                • Created:
                  Updated:
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