[ https://issues.apache.org/jira/browse/SPARK-24966?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16561303#comment-16561303 ]
Dilip Biswal commented on SPARK-24966: -------------------------------------- I am working on a fix for this. > Fix the precedence rule for set operations. > ------------------------------------------- > > Key: SPARK-24966 > URL: https://issues.apache.org/jira/browse/SPARK-24966 > Project: Spark > Issue Type: Bug > Components: SQL > Affects Versions: 2.3.1 > Reporter: Dilip Biswal > Priority: Major > > Currently the set operations INTERSECT, UNION and EXCEPT are assigned the > same precedence. We need to change to make sure INTERSECT is given higher > precedence than UNION and EXCEPT. UNION and EXCEPT should be evaluated in the > order they appear in the query from left to right. > Given this will result in a change in behavior, we need to keep it under a > config. > Here is a reference : > https://docs.microsoft.com/en-us/sql/t-sql/language-elements/set-operators-except-and-intersect-transact-sql?view=sql-server-2017 -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org