sunjincheng created FLINK-6892:
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Summary: Add LPAD 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
LPAD(str,len,padstr) Returns the string str, left-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'
* See more:
** [MySQL|
https://dev.mysql.com/doc/refman/5.7/en/mathematical-functions.html#function_lpad]
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