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Date: Fri, 29 Jun 2012 20:29:44 +0000 (UTC)
From: "Kevin Wilfong (JIRA)" <jira@apache.org>
To: hive-dev@hadoop.apache.org
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Subject: [jira] [Updated] (HIVE-2427) Warn user that precision is lost when
 bigint is implicitly cast to double in joins and unions.
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     [ https://issues.apache.org/jira/browse/HIVE-2427?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kevin Wilfong updated HIVE-2427:
--------------------------------

    Status: Patch Available  (was: Open)
    
> 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-2427.5.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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