DaeMyung Kang created TAJO-397:
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Summary: Implement sign function
Key: TAJO-397
URL: https://issues.apache.org/jira/browse/TAJO-397
Project: Tajo
Issue Type: Sub-task
Components: operator/function/udf
Reporter: DaeMyung Kang
Assignee: DaeMyung Kang
Priority: Minor
Attachments: TAJO-397.patch
float8 sign(float8)
if value is greater than 0 return 1.0
if value is equals to 0 return 0.0
if value is less than 0 return -1.0
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