chunweilei commented on issue #8176: [FLINK-12192] [table-planner-blink] Add support for generating optimized logical plan for grouping sets and distinct aggregate URL: https://github.com/apache/flink/pull/8176#issuecomment-483234521 > extends AggregateExpandDistinctAggregatesRule to fix some bugs Would you please explaining a bit more about the bugs?
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