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From "Zheng Shao (JIRA)" <j...@apache.org>
Subject [jira] Created: (HIVE-164) Support CASE and IF statement
Date Thu, 11 Dec 2008 06:41:44 GMT
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


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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