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Posted to dev@hive.apache.org by "Venkata Ramana G (JIRA)" <ji...@apache.org> on 2014/09/30 06:47:34 UTC
[jira] [Commented] (HIVE-3454) Problem with CAST(BIGINT as
TIMESTAMP)
[ https://issues.apache.org/jira/browse/HIVE-3454?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14152792#comment-14152792 ]
Venkata Ramana G commented on HIVE-3454:
----------------------------------------
I am using 0.12 release still this problems exists. Inconsistancy in casting.
select cast(cast(cast(1000 as INT) as TIMESTAMP) as INT) from src limit 1; result: 1
select cast(cast(cast(1000 as BIGINT) as TIMESTAMP) as BIGINT) from src limit 1; result: 1
select cast(cast(cast(1000.0 as DOUBLE) as TIMESTAMP) as DOUBLE) from src limit 1; result: 1000.0
converting int/bigint/tinyint to timestamp and back to int/bigint/tinyint changes the value.
int/bigint/tinyint/boolean conversion to timestamp, should take input in seconds, just like double.
Issue raised in sep/2012, still problem persists. This requires a fix.
> Problem with CAST(BIGINT as TIMESTAMP)
> --------------------------------------
>
> Key: HIVE-3454
> URL: https://issues.apache.org/jira/browse/HIVE-3454
> Project: Hive
> Issue Type: Bug
> Components: Types, UDF
> Affects Versions: 0.8.0, 0.8.1, 0.9.0, 0.10.0, 0.11.0, 0.12.0, 0.13.0, 0.13.1
> Reporter: Ryan Harris
> Labels: newbie, newdev, patch
> Attachments: HIVE-3454.1.patch.txt, HIVE-3454.patch
>
>
> Ran into an issue while working with timestamp conversion.
> CAST(unix_timestamp() as TIMESTAMP) should create a timestamp for the current time from the BIGINT returned by unix_timestamp()
> Instead, however, a 1970-01-16 timestamp is returned.
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