Amogh Margoor created CALCITE-787:
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Summary: Star table is being assigned to MaterializedView even
when it's not required.
Key: CALCITE-787
URL: https://issues.apache.org/jira/browse/CALCITE-787
Project: Calcite
Issue Type: Task
Reporter: Amogh Margoor
Assignee: Julian Hyde
cc: [~vrajat]
CalciteMaterializer tries to rewrite query relnode with the star table in
schema (the first one that fits). Utility function used is
RelOptMaterialization::tryUseStar. Utility function should return null when it
cannot rewrite relnode using star table, but instead it is returning the same
relnode back. This is causing MV being assigned star table even when it is not
required.
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