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https://issues.apache.org/jira/browse/HIVE-15939?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15949464#comment-15949464
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Ashutosh Chauhan commented on HIVE-15939:
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Now that master no longer needs to be backward compatible, we can make changes
to be standard compliant. Also, it will be worth observing the behavior on
other dbs (especially postgres since thats usually closest to standard.)
> Make cast expressions comply more to sql2011
> --------------------------------------------
>
> Key: HIVE-15939
> URL: https://issues.apache.org/jira/browse/HIVE-15939
> Project: Hive
> Issue Type: Sub-task
> Components: SQL
> Reporter: Zoltan Haindrich
> Assignee: Teddy Choi
> Attachments: HIVE-15939.1.patch, HIVE-15939.2.patch,
> HIVE-15939.3.patch, HIVE-15939.4.patch, HIVE-15939.5.patch
>
>
> in HIVE-6590 Jason have uncovered the fact that UDFToBoolean treats all
> non-empty strings as true.
> It would be great to have the cast expressions closer to the standard...at
> least when there is an expected behaviour from the user;
> like {{cast('false' as boolean)}} should be true.
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