[teiid-issues] [JBoss JIRA] (TEIID-2500) Rewrite of case with true condition is not correct
Steven Hawkins (JIRA)
issues at jboss.org
Mon Dec 16 10:02:34 EST 2013
[ https://issues.jboss.org/browse/TEIID-2500?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Steven Hawkins closed TEIID-2500.
---------------------------------
> Rewrite of case with true condition is not correct
> --------------------------------------------------
>
> Key: TEIID-2500
> URL: https://issues.jboss.org/browse/TEIID-2500
> Project: Teiid
> Issue Type: Feature Request
> Components: Query Engine
> Affects Versions: 6.0.0
> Reporter: Steven Hawkins
> Assignee: Steven Hawkins
> Priority: Critical
> Fix For: 8.4, 7.7.8
>
>
> If a secondary searched case condition is always true, then the case will be inappropriately rewritten as just the then expression:
> case when ... when true then x else y end
> becomes just
> x
> However the prior cases should still be considered.
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