[jira] [Updated] (HIVE-2427) Warn user that precision is lost when bigint is implicitly cast to double in joins and unions.

["Namit Jain (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-2427?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Namit Jain updated HIVE-2427:
-----------------------------

    Status: Open  (was: Patch Available)
    
> Warn user that precision is lost when bigint is implicitly cast to double in joins and unions.
> ----------------------------------------------------------------------------------------------
>
>                 Key: HIVE-2427
>                 URL: https://issues.apache.org/jira/browse/HIVE-2427
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: Kevin Wilfong
>            Assignee: Kevin Wilfong
>         Attachments: HIVE-2427.1.patch.txt, HIVE-2427.2.patch.txt, HIVE-2427.3.patch.txt, HIVE-2427.D2181.1.patch
>
>
> When a bigint is implicitly cast to a double (when a bigint is involved in an equality expression with a string or double as part of a join condition, or when a bigint column is to be combined with a string or double column as part of a union) precision may be lost, resulting in unexpected behavior. Until we fix the underlying issue we should throw an error in strict mode, and a warning in nonstrict mode alerting the user about this.

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