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https://issues.apache.org/jira/browse/FLINK-6892?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16060962#comment-16060962
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ASF GitHub Bot commented on FLINK-6892:
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Github user sunjincheng121 commented on the issue:
https://github.com/apache/flink/pull/4127
I'll Rebase code and add doc after FLINK-6960 & FLINK-6925.
> Add L/RPAD supported in SQL
> ---------------------------
>
> Key: FLINK-6892
> URL: https://issues.apache.org/jira/browse/FLINK-6892
> Project: Flink
> Issue Type: Sub-task
> Components: Table API & SQL
> Affects Versions: 1.4.0
> Reporter: sunjincheng
> Assignee: sunjincheng
>
> L/RPAD(str,len,padstr) Returns the string str, left/right-padded with the
> string padstr to a length of len characters. If str is longer than len, the
> return value is shortened to len characters.
> * Syntax:
> LPAD(str,len,padstr)
> * Arguments
> **str: -
> **len: -
> **padstr: -
> * Return Types
> String
> * Example:
> LPAD('hi',4,'??') -> '??hi'
> LPAD('hi',1,'??') -> 'h'
> RPAD('hi',4,'??') -> 'hi??'
> RPAD('hi',1,'??') -> 'h'
> * See more:
> ** [MySQL|
> https://dev.mysql.com/doc/refman/5.7/en/string-functions.html#function_lpad]
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