[teiid-issues] [JBoss JIRA] (TEIID-5937) Union All followed by except returns wrong results
Dmitrii Pogorelov (Jira)
issues at jboss.org
Thu Jun 11 06:49:39 EDT 2020
[ https://issues.redhat.com/browse/TEIID-5937?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14149788#comment-14149788 ]
Dmitrii Pogorelov commented on TEIID-5937:
------------------------------------------
[~shawkins] thx a lot again, just merged all changes and it works now.
> I've simplified this
I noticed you removed a big piece of code implemented in the scope of the issue before.
> Union All followed by except returns wrong results
> --------------------------------------------------
>
> Key: TEIID-5937
> URL: https://issues.redhat.com/browse/TEIID-5937
> Project: Teiid
> Issue Type: Bug
> Components: Query Engine
> Affects Versions: 13.1
> Reporter: Dmitrii Pogorelov
> Assignee: Steven Hawkins
> Priority: Blocker
> Fix For: 15.0, 13.1.2, 14.0.1
>
> Original Estimate: 4 hours
> Time Spent: 5 hours, 30 minutes
> Remaining Estimate: 0 minutes
>
> The following queries return wrong results:
> {code:sql}
> -- <null> though should return 1
> select * from views.test2 except select * from views.test1
> UNION ALL
> select * from views.test1 except select * from views.test2 ;;
>
> -- <null> though should return 1
> (select * from views.test2 except select * from views.test1
> UNION ALL
> select * from views.test1) except select * from views.test2 ;;
> {code}
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