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https://issues.apache.org/jira/browse/HIVE-12751?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15072222#comment-15072222
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Pengcheng Xiong commented on HIVE-12751:
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pushed to master and branch-2.0. Thanks.
> Fix NVL explain syntax
> ----------------------
>
> Key: HIVE-12751
> URL: https://issues.apache.org/jira/browse/HIVE-12751
> Project: Hive
> Issue Type: Improvement
> Components: UDF
> Affects Versions: 2.0.0
> Reporter: Gopal V
> Assignee: Gopal V
> Attachments: HIVE-12751.1.patch
>
>
> {code}
> predicate: (not if (key = '238') is null returnsfalse) (type: boolean)
> {code}
> At best is confusing to a user who used an {{NVL}} udf. The best
> representation is {{NVL(a,b)}} as is.
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