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  1. Calcite
  2. CALCITE-4195

Cast between types with different collators must be evaluated as not monotonic

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      Problem related to the feature CALCITE-3951.

      A cast operation from a character type to another character type that has a different collator must be evaluated as not monotonic. Currently this is not the case.
      This has an impact e.g. in SortProjectTransposeRule, since we can incorrectly transpose a sort after a projection than contains such a cast, and we end up with a plan that will return a different result than the original one (it is not the same casting and then sorting; than sorting and then casting).

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              • Assignee:
                rubenql Ruben Q L
                Reporter:
                rubenql Ruben Q L
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