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From "Alexander Pivovarov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-10488) cast DATE as TIMESTAMP returns incorrect values
Date Wed, 29 Apr 2015 19:18:07 GMT

    [ https://issues.apache.org/jira/browse/HIVE-10488?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14519997#comment-14519997
] 

Alexander Pivovarov commented on HIVE-10488:
--------------------------------------------

Got it! Thank you.

BTW, I remember it was one issue with date to timestamp conversion for negative unix time
HIVE-10178. But it is fixed already and has nothing to do with Orc.
{code}
select cast(cast('1966-01-01 00:00:01' as timestamp) as date);
1966-02-02
{code}

> cast DATE as TIMESTAMP returns incorrect values
> -----------------------------------------------
>
>                 Key: HIVE-10488
>                 URL: https://issues.apache.org/jira/browse/HIVE-10488
>             Project: Hive
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 0.13.1
>            Reporter: N Campbell
>            Assignee: Chaoyu Tang
>
> same data in textfile works
> same data loaded into an ORC table does not
> connection property of tez/mr makes no difference.
> select rnum, cdt, cast (cdt as timestamp) from tdt
> 0	<null>	<null>
> 1	1996-01-01	1969-12-31 19:00:09.496
> 2	2000-01-01	1969-12-31 19:00:10.957
> 3	2000-12-31	1969-12-31 19:00:11.322
> vs
> 0	<null>	<null>
> 1	1996-01-01	1996-01-01 00:00:00.0
> 2	2000-01-01	2000-01-01 00:00:00.0
> 3	2000-12-31	2000-12-31 00:00:00.0
> create table  if not exists TDT ( RNUM int , CDT date   )
>  STORED AS orc  ;
> insert overwrite table TDT select * from  text.TDT;
> 0|\N
> 1|1996-01-01
> 2|2000-01-01
> 3|2000-12-31



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