[ https://issues.apache.org/jira/browse/SPARK-38886?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Wenchen Fan resolved SPARK-38886. --------------------------------- Fix Version/s: 3.4.0 Resolution: Fixed Issue resolved by pull request 36177 [https://github.com/apache/spark/pull/36177] > Remove outer join if aggregate functions are duplicate agnostic on streamed > side > -------------------------------------------------------------------------------- > > Key: SPARK-38886 > URL: https://issues.apache.org/jira/browse/SPARK-38886 > Project: Spark > Issue Type: Improvement > Components: SQL > Affects Versions: 3.4.0 > Reporter: XiDuo You > Priority: Major > Fix For: 3.4.0 > > > If aggregate child is outer join, and the aggregate references are all coming > from the streamed side and the aggregate functions are all duplicate > agnostic, we can remve the outer join. > For example: > {code:java} > SELECT t1.c1, min(t1.c2) FROM t1 LEFT JOIN t2 ON t1.c1 = t2.c1 GROUP BY t1.c1 > ==> > SELECT t1.c1, min(t1.c2) FROM t1 GROUP BY t1.c1 > {code} -- This message was sent by Atlassian Jira (v8.20.1#820001) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org