[jira] [Assigned] (SPARK-13354) Push filter throughout outer join when the condition can filter out empty row
[ https://issues.apache.org/jira/browse/SPARK-13354?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Apache Spark reassigned SPARK-13354: Assignee: Apache Spark (was: Davies Liu) > Push filter throughout outer join when the condition can filter out empty row > -- > > Key: SPARK-13354 > URL: https://issues.apache.org/jira/browse/SPARK-13354 > Project: Spark > Issue Type: Improvement > Components: SQL >Reporter: Davies Liu >Assignee: Apache Spark > > For a query > {code} > select * from a left outer join b on a.a = b.a where b.b > 10 > {code} > The condition `b.b > 10` will filter out all the row that the b part of it is > empty. > In this case, we should use Inner join, and push down the filter into b. -- This message was sent by Atlassian JIRA (v6.3.4#6332) - To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org
[jira] [Assigned] (SPARK-13354) Push filter throughout outer join when the condition can filter out empty row
[ https://issues.apache.org/jira/browse/SPARK-13354?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Apache Spark reassigned SPARK-13354: Assignee: Davies Liu (was: Apache Spark) > Push filter throughout outer join when the condition can filter out empty row > -- > > Key: SPARK-13354 > URL: https://issues.apache.org/jira/browse/SPARK-13354 > Project: Spark > Issue Type: Improvement > Components: SQL >Reporter: Davies Liu >Assignee: Davies Liu > > For a query > {code} > select * from a left outer join b on a.a = b.a where b.b > 10 > {code} > The condition `b.b > 10` will filter out all the row that the b part of it is > empty. > In this case, we should use Inner join, and push down the filter into b. -- This message was sent by Atlassian JIRA (v6.3.4#6332) - To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org