[ https://issues.apache.org/jira/browse/SPARK-12770?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Reynold Xin resolved SPARK-12770. --------------------------------- Resolution: Fixed Fix Version/s: 2.0.0 > Implement rules for branch elimination for CaseWhen in SimplifyConditionals > --------------------------------------------------------------------------- > > Key: SPARK-12770 > URL: https://issues.apache.org/jira/browse/SPARK-12770 > Project: Spark > Issue Type: Sub-task > Components: Optimizer, SQL > Reporter: Reynold Xin > Assignee: Reynold Xin > Fix For: 2.0.0 > > > There are a few things we can do: > 1. If the first branch's condition is a true literal, remove the CaseWhen and > use the value from that branch. > 2. If a branch's condition is a false or null literal, remove that branch. > 3. If only the else branch is left, remove the CaseWhen and use the value > from the else branch. -- 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