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Posted to dev@calcite.apache.org by "Liya Fan (Jira)" <ji...@apache.org> on 2020/10/16 06:20:00 UTC

[jira] [Created] (CALCITE-4342) More aggregate functions should be marked as splittable and duplicate-insensitive

Liya Fan created CALCITE-4342:
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             Summary: More aggregate functions should be marked as splittable and duplicate-insensitive
                 Key: CALCITE-4342
                 URL: https://issues.apache.org/jira/browse/CALCITE-4342
             Project: Calcite
          Issue Type: Improvement
          Components: core
            Reporter: Liya Fan
            Assignee: Liya Fan


As discussed in the mailing list, there are more aggregate functions (e.g. SINGLE_VALUE, ANY_VALUE) that can be classified as splittable and duplicate-insensitive. We need to tell the optimizer explicitly about this, so more optimizations can be applied in various scenarios. 



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