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From "Jinho Kim (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (TAJO-185) Implement split_part function
Date Mon, 23 Sep 2013 01:33:02 GMT

    [ https://issues.apache.org/jira/browse/TAJO-185?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13774234#comment-13774234
] 

Jinho Kim commented on TAJO-185:
--------------------------------

Could you change the split function to apache common instead of JDK ?, because split is slow
way to parse the string.
                
> Implement split_part function
> -----------------------------
>
>                 Key: TAJO-185
>                 URL: https://issues.apache.org/jira/browse/TAJO-185
>             Project: Tajo
>          Issue Type: New Feature
>          Components: function/udf
>            Reporter: Hyunsik Choi
>            Assignee: Hyunsik Choi
>             Fix For: 0.2-incubating
>
>         Attachments: TAJO-185.patch
>
>
> A function to split a string into multiple string parts is widely used in various applications.
We need this function.
> The function definition is as follows:
> {noformat}
> split_part(string text, delimiter text, field int)
> {noformat}
> This function definition follows postgresql's one.
> http://www.postgresql.org/docs/9.1/static/functions-string.html

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