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Posted to dev@hive.apache.org by "Carl Steinbach (JIRA)" <ji...@apache.org> on 2011/04/06 01:24:06 UTC

[jira] [Updated] (HIVE-436) MIN and MAX should inherit type

     [ https://issues.apache.org/jira/browse/HIVE-436?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Carl Steinbach updated HIVE-436:
--------------------------------

    Component/s: UDF

> MIN and MAX should inherit type
> -------------------------------
>
>                 Key: HIVE-436
>                 URL: https://issues.apache.org/jira/browse/HIVE-436
>             Project: Hive
>          Issue Type: Wish
>          Components: UDF
>            Reporter: Adam Kramer
>
> MIN and MAX functions currently return the DOUBLE type...but really, they should return the same type as the column they operate on.
> In some cases like SUM, it's possible that the result would overflow making DOUBLE more useful as it can drop digits and swap to scientific notation, but MIN and MAX by definition cannot have this problem because the answers are always represented in the column they are run across.
> Easy workaround: CAST all of my MINs and MAXes. It's just a wish.

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