[jira] [Created] (TAJO-185) Implement split_part function

["Hyunsik Choi (JIRA)" <ji...@apache.org>]

Hyunsik Choi created TAJO-185:
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             Summary: Implement split_part function
                 Key: TAJO-185
                 URL: https://issues.apache.org/jira/browse/TAJO-185
             Project: Tajo
          Issue Type: New Feature
          Components: UDF
            Reporter: Hyunsik Choi
            Assignee: Hyunsik Choi
             Fix For: 0.2-incubating


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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