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From "Gopal V (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-12742) NULL table comparison within CASE does not work as previous hive versions
Date Thu, 24 Dec 2015 01:22:46 GMT

    [ https://issues.apache.org/jira/browse/HIVE-12742?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15070368#comment-15070368
] 

Gopal V commented on HIVE-12742:
--------------------------------

[~pxiong]: try disabling constant propogation.

> NULL table comparison within CASE does not work as previous hive versions
> -------------------------------------------------------------------------
>
>                 Key: HIVE-12742
>                 URL: https://issues.apache.org/jira/browse/HIVE-12742
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Pengcheng Xiong
>            Assignee: Pengcheng Xiong
>
> drop table test_1; 
> create table test_1 (id int, id2 int); 
> insert into table test_1 values (123, NULL);
> SELECT cast(CASE WHEN id = id2 THEN FALSE ELSE TRUE END AS BOOLEAN) AS b 
> FROM test_1; 
> --NULL
> But the output should be true (confirmed with postgres.)



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