[jira] [Created] (TAJO-394) Implement abs function

[DaeMyung Kang (JIRA)]

DaeMyung Kang created TAJO-394:
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             Summary: Implement abs function
                 Key: TAJO-394
                 URL: https://issues.apache.org/jira/browse/TAJO-394
             Project: Tajo
          Issue Type: Sub-task
          Components: operator/function/udf
            Reporter: DaeMyung Kang
            Assignee: DaeMyung Kang
            Priority: Minor


abs(-1) ===> 1
abs(1) ===> 1
abs(1.0) ===> 1.0
abs(-1.0) ===> 1.0




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