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Zhenghua Gao commented on FLINK-3475: ------------------------------------- I have created a pr for this issue: https://github.com/apache/flink/pull/3111. Currently, calcite's AggregateExpandDistinctAggregatesRule can help flink to support distinct aggregate SQL. After do some tests, i find some bad cases which described in https://issues.apache.org/jira/browse/CALCITE-1558. So I copied the calcite class to flink project and did a quick fix. > DISTINCT aggregate function support for SQL queries > --------------------------------------------------- > > Key: FLINK-3475 > URL: https://issues.apache.org/jira/browse/FLINK-3475 > Project: Flink > Issue Type: New Feature > Components: Table API & SQL > Reporter: Chengxiang Li > Assignee: Zhenghua Gao > > DISTINCT aggregate function may be able to reuse the aggregate function > instead of separate implementation, and let Flink runtime take care of > duplicate records. -- This message was sent by Atlassian JIRA (v6.3.4#6332)