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Timo Walther commented on FLINK-4604: ------------------------------------- [~anmu] yes sure. I assigned the issue to you. If you need any help, just ask. Thanks! > 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)