[jira] [Assigned] (SPARK-12613) Elimination of Outer Join by Parent Join Condition
[ https://issues.apache.org/jira/browse/SPARK-12613?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Apache Spark reassigned SPARK-12613: Assignee: Apache Spark > Elimination of Outer Join by Parent Join Condition > -- > > Key: SPARK-12613 > URL: https://issues.apache.org/jira/browse/SPARK-12613 > Project: Spark > Issue Type: Improvement > Components: SQL >Affects Versions: 1.6.0 >Reporter: Xiao Li >Assignee: Apache Spark >Priority: Critical > > Given an outer join is involved in another join (called parent join), when > the join type of the parent join is inner, left-semi, left-outer and > right-outer, checking if the join condition of the parent join satisfies the > following two conditions: > 1) there exist null filtering predicates against the columns in the > null-supplying side of parent join. > 2) these columns are from the child join. > If having such join predicates, execute the elimination rules: > - full outer -> inner if both sides of the child join have such predicates > - left outer -> inner if the right side of the child join has such predicates > - right outer -> inner if the left side of the child join has such predicates > - full outer -> left outer if only the left side of the child join has such > predicates > - full outer -> right outer if only the right side of the child join has > such predicates -- 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-12613) Elimination of Outer Join by Parent Join Condition
[ https://issues.apache.org/jira/browse/SPARK-12613?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Apache Spark reassigned SPARK-12613: Assignee: (was: Apache Spark) > Elimination of Outer Join by Parent Join Condition > -- > > Key: SPARK-12613 > URL: https://issues.apache.org/jira/browse/SPARK-12613 > Project: Spark > Issue Type: Improvement > Components: SQL >Affects Versions: 1.6.0 >Reporter: Xiao Li >Priority: Critical > > Given an outer join is involved in another join (called parent join), when > the join type of the parent join is inner, left-semi, left-outer and > right-outer, checking if the join condition of the parent join satisfies the > following two conditions: > 1) there exist null filtering predicates against the columns in the > null-supplying side of parent join. > 2) these columns are from the child join. > If having such join predicates, execute the elimination rules: > - full outer -> inner if both sides of the child join have such predicates > - left outer -> inner if the right side of the child join has such predicates > - right outer -> inner if the left side of the child join has such predicates > - full outer -> left outer if only the left side of the child join has such > predicates > - full outer -> right outer if only the right side of the child join has > such predicates -- 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
