[ https://issues.apache.org/jira/browse/CALCITE-3159?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Danny Chan updated CALCITE-3159: -------------------------------- Fix Version/s: 1.21.0 > Distinct can be removed for MIN/MAX/BIT_OR/BIT_AND aggregate functions > ---------------------------------------------------------------------- > > Key: CALCITE-3159 > URL: https://issues.apache.org/jira/browse/CALCITE-3159 > Project: Calcite > Issue Type: Improvement > Components: core > Reporter: Haisheng Yuan > Assignee: Danny Chan > Priority: Major > Labels: pull-request-available > Fix For: 1.21.0 > > Time Spent: 3h 20m > Remaining Estimate: 0h > > For the following query: > {code:java} > select a, min(distinct b), bit_or(distinct c) from foo group by a; > {code} > Currently Calcite still preserve the distinct for these aggregate functions, > but DISTINCT is not meaningful with MIN/MAX and is available for ISO > compatibility only. We can safely remove distinct and get more optimization > opportunities. -- This message was sent by Atlassian Jira (v8.3.4#803005)