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  1. Calcite
  2. CALCITE-3666

Refine RelMdUniqueKeys and RelMdColumnUniqueness for Calc

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      RelMdColumnUniqueness does not have an override for Calc, thus it can't resolve uniqueness for EnumerableCalc

      In practice, it is hard to deduce uniqueness for select emp.id*emp.deptno from emp, however, simple projects can be resolved (e.g. when Calc selects one of its input as is).

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              • Assignee:
                vladimirsitnikov Vladimir Sitnikov
                Reporter:
                vladimirsitnikov Vladimir Sitnikov
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