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Timo Walther commented on FLINK-4604: ------------------------------------- Ok, it seems that the {{AggregateReduceFunctionsRule}} does work correctly. It would be great if you could figure out why. Can you check if {{AggregateReduceFunctionsRule.matches}} is called? Maybe we have to adapt the {{RelOptRuleOperand}} condition or Calcite has a problem that needs to be reported on the Calcite mailing list. > Add support for standard deviation/variance > ------------------------------------------- > > Key: FLINK-4604 > URL: https://issues.apache.org/jira/browse/FLINK-4604 > Project: Flink > Issue Type: New Feature > Components: Table API & SQL > Reporter: Timo Walther > Assignee: Anton Mushin > > Calcite's {{AggregateReduceFunctionsRule}} can convert SQL {{AVG, STDDEV_POP, > STDDEV_SAMP, VAR_POP, VAR_SAMP}} to sum/count functions. We should add, test > and document this rule. > If we also want to add this aggregates to Table API is up for discussion. -- This message was sent by Atlassian JIRA (v6.3.4#6332)