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https://issues.apache.org/jira/browse/TRAFODION-3021?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16438204#comment-16438204
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ASF GitHub Bot commented on TRAFODION-3021:
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GitHub user traflm opened a pull request:
https://github.com/apache/trafodion/pull/1518
[TRAFODION-3021] union, intersect, except should be cacheable
Make UNION, INTERSECT, EXCEPT cacheable.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/traflm/trafodion TRAFODION-3021
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/trafodion/pull/1518.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #1518
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commit e2b9a66d92f63e01f897f1ca1d7f3a6801a52756
Author: Liu Ming <ovis_poly@...>
Date: 2018-04-14T02:13:53Z
[TRAFODION-3021] union, intersect, except should be cacheable
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> set operator not cacheable
> --------------------------
>
> Key: TRAFODION-3021
> URL: https://issues.apache.org/jira/browse/TRAFODION-3021
> Project: Apache Trafodion
> Issue Type: Task
> Reporter: liu ming
> Assignee: liu ming
> Priority: Major
>
> select * from t1
> union all
> select * from t2
>
> This query cannot be cached.
>
> Should be cacheable.
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