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https://issues.apache.org/jira/browse/TAJO-684?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13925155#comment-13925155
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Hyunsik Choi commented on TAJO-684:
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We already have such functions to extract some part of time.
DatePartFromTime.class would be helpful for you. They need to be documented.
> Add functions about time
> ------------------------
>
> Key: TAJO-684
> URL: https://issues.apache.org/jira/browse/TAJO-684
> Project: Tajo
> Issue Type: Task
> Components: function/udf
> Affects Versions: 1.0-incubating
> Reporter: Jihoon Son
>
> Functions about time such as to_second(), to_minute(), to_hour(), to_day(),
> to_week(), to_year() are popularly used in many applications.
> We need to provide these functions by default.
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