[
https://issues.apache.org/jira/browse/HIVE-8555?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14180434#comment-14180434
]
Sergey Shelukhin commented on HIVE-8555:
----------------------------------------
why is it only done for string? just checking, doesn't require changes. Will it
work if there's say an int column, and cast is introduced by CBO internally?
If yes +1
> Too many casts results in loss of original string representation for constant
> ------------------------------------------------------------------------------
>
> Key: HIVE-8555
> URL: https://issues.apache.org/jira/browse/HIVE-8555
> Project: Hive
> Issue Type: Bug
> Components: Logical Optimizer
> Affects Versions: 0.14.0
> Reporter: Ashutosh Chauhan
> Assignee: Ashutosh Chauhan
> Attachments: HIVE-8555.patch
>
>
> {code}
> SELECT key, value FROM src WHERE key = cast(86 as double);
> 86.0 val_86
> {code}
> With constant propagate off we get different and correct result.
> {code}
> set hive.optimize.constant.propagation=false;
> SELECT key, value FROM src WHERE key = cast(86 as double);
> 86 val_86
> {code}
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
