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https://issues.apache.org/jira/browse/TAJO-342?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13836149#comment-13836149
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Hyunsik Choi commented on TAJO-342:
-----------------------------------
The patch looks good for me.
However, this implementation cannot evlauate multi-byte characters. For this,
why don't you use just String::indexOf?
> Implement strpos(string, substring) function
> --------------------------------------------
>
> Key: TAJO-342
> URL: https://issues.apache.org/jira/browse/TAJO-342
> Project: Tajo
> Issue Type: New Feature
> Components: operator/function/udf
> Reporter: Hyunsik Choi
> Assignee: hyoungjunkim
> Priority: Minor
> Fix For: 0.8-incubating
>
> Attachments: TAJO-342.patch
>
>
> h3. Function Definition
> {code}
> int strpos(string text, substring text)
> {code}
> h3. Description
> This function finds the location of specified substring.
> * If *string* or *substring* is null, the result should be null.
> * If *substring* is '', the result should be 1.
> * If there is no matched *substring*, the result should be 0.
> * The result is one-based index.
> h3. Example.
> {code}
> hyunsik=> select strpos('tajo','jo');
> strpos
> --------
> 3
> (1 row)
> {code}
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