You are viewing a plain text version of this content. The canonical link for it is here.
Posted to dev@hive.apache.org by "Navis (Commented) (JIRA)" <ji...@apache.org> on 2011/12/06 08:19:40 UTC
[jira] [Commented] (HIVE-2594) UDF LIKE can't handle literal '\'
before '%'
[ https://issues.apache.org/jira/browse/HIVE-2594?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13163409#comment-13163409 ]
Navis commented on HIVE-2594:
-----------------------------
It's interesting.. Literals are decoded like below.
{code}
'aaa\%' --> 'aaa\%'
'aaa\\%' --> 'aaa\%'
'aaa\\\%' --> 'aaa\\%'
'aaa\\\\%' --> 'aaa\\%'
{code}
Basically all literals are escaped in SemanticAnalyzer. So other entities like 'UDFLike' might not have to try escape, IMHO. But BaseSemanticAnalyzer#unescapeSQLString keeps preceding back slash as-is in some cases like 'bs%' or 'bs_' which make impossible to identify whether it(=bs) is a escape or a character.
> UDF LIKE can't handle literal '\' before '%'
> --------------------------------------------
>
> Key: HIVE-2594
> URL: https://issues.apache.org/jira/browse/HIVE-2594
> Project: Hive
> Issue Type: Bug
> Components: UDF
> Affects Versions: 0.8.0
> Reporter: Carl Steinbach
>
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira