siddharthteotia opened a new pull request #4648: Enable DISTINCT and throw exceptions for not-supported cases URL: https://github.com/apache/incubator-pinot/pull/4648 (1) Throw parse exception (after building AST) if DISTINCT query has ORDER BY. Done for both PQL compilation and Calcite SQL compilation paths (2) Throw runtime exception if DISTINCT query has one or more multi-value columns. Added unit tests for both cases. When the support is implemented, we can remove the tests and exceptions. Also, don't take star-tree path in AggregationPlanNode for DISTINCT query. cc @Jackie-Jiang , @mayankshriv
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