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From "Yuntao Jia (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HIVE-542) Faster String Like
Date Thu, 18 Jun 2009 23:34:07 GMT

     [ https://issues.apache.org/jira/browse/HIVE-542?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Yuntao Jia updated HIVE-542:
----------------------------

    Attachment: HIVE-542.1.patch

I tried to make the function checkSimplePattern() static. However, there are two member variables
modified in that function, so I left it unchanged. If static is necessary,  I can decompose
it to two functions. One function checks if the pattern is a simple pattern, the second function
finds out the strings to match in that pattern. 



> Faster String Like
> ------------------
>
>                 Key: HIVE-542
>                 URL: https://issues.apache.org/jira/browse/HIVE-542
>             Project: Hadoop Hive
>          Issue Type: Improvement
>          Components: Query Processor
>    Affects Versions: 0.4.0
>            Reporter: Zheng Shao
>         Attachments: HIVE-542.1.patch
>
>
> Currently Hive uses regular expression to do string like which is really really slow.
We should implement "LIKE" natively using Text.

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