[ https://issues.apache.org/jira/browse/SPARK-39172?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
XiDuo You updated SPARK-39172: ------------------------------ Summary: Remove outer join if all output come from streamed side and buffered side keys exist unique key (was: Remove outer join if all output come from streamed side and buffered side keys exist unique) > Remove outer join if all output come from streamed side and buffered side > keys exist unique key > ----------------------------------------------------------------------------------------------- > > Key: SPARK-39172 > URL: https://issues.apache.org/jira/browse/SPARK-39172 > Project: Spark > Issue Type: Improvement > Components: SQL > Affects Versions: 3.4.0 > Reporter: XiDuo You > Priority: Major > > Improve the optimzation case using the distinct keys framework. > For example: > {code:java} > SELECT t1.* FROM t1 LEFT JOIN (SELECT distinct c1 as c1 FROM t)t2 ON t1.c1 = > t2.c1 > ==> > SELECT t1.* FROM t1 {code} -- This message was sent by Atlassian Jira (v8.20.7#820007) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org