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https://issues.apache.org/jira/browse/HIVE-5872?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jake Farrell updated HIVE-5872:
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Comment: was deleted
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> Make UDAFs such as GenericUDAFSum report accurate precision/scale for decimal
> types
> -----------------------------------------------------------------------------------
>
> Key: HIVE-5872
> URL: https://issues.apache.org/jira/browse/HIVE-5872
> Project: Hive
> Issue Type: Improvement
> Components: Types, UDF
> Affects Versions: 0.12.0
> Reporter: Xuefu Zhang
> Assignee: Xuefu Zhang
> Fix For: 0.13.0
>
> Attachments: HIVE-5872.1.patch, HIVE-5872.2.patch, HIVE-5872.3.patch,
> HIVE-5872.4.patch, HIVE-5872.patch
>
>
> Currently UDAFs are still reporting system default precision/scale (38, 18)
> for decimal results. Not only this is coarse, but also this can cause
> problems in subsequent operators such as division, where the result is
> dependent on the precision/scale of the input, which can go out of bound
> (38,38). Thus, these UDAFs should correctly report the precision/scale of the
> result.
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