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From "Zheng Shao (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HIVE-164) Support CASE and IF statement
Date Sun, 19 Apr 2009 05:48:48 GMT

     [ https://issues.apache.org/jira/browse/HIVE-164?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Zheng Shao updated HIVE-164:
----------------------------

    Attachment:     (was: HIVE-164.2.patch)

> Support CASE and IF statement
> -----------------------------
>
>                 Key: HIVE-164
>                 URL: https://issues.apache.org/jira/browse/HIVE-164
>             Project: Hadoop Hive
>          Issue Type: New Feature
>          Components: Query Processor
>            Reporter: Zheng Shao
>            Assignee: Zheng Shao
>
> See http://dev.mysql.com/doc/refman/5.0/en/control-flow-functions.html for details.
> Syntax:
> {code}
> CASE value WHEN [compare_value] THEN result [WHEN [compare_value] THEN result ...] [<ELSE
result] END
> CASE WHEN [condition] THEN result [WHEN [condition] THEN result ...] [ELSE result] END

> IF(expr1,expr2,expr3)
> {code}

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