[jira] [Created] (FLINK-6895) Add STR_TO_DATE supported in SQL

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[jira] [Created] (FLINK-6895) Add STR_TO_DATE supported in SQL

JIRA jira@apache.org
sunjincheng created FLINK-6895:
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             Summary: Add STR_TO_DATE supported in SQL
                 Key: FLINK-6895
                 URL: https://issues.apache.org/jira/browse/FLINK-6895
             Project: Flink
          Issue Type: Sub-task
          Components: Table API & SQL
    Affects Versions: 1.4.0
            Reporter: sunjincheng


STR_TO_DATE(str,format) This is the inverse of the DATE_FORMAT() function. It takes a string str and a format string format. STR_TO_DATE() returns a DATETIME value if the format string contains both date and time parts, or a DATE or TIME value if the string contains only date or time parts. If the date, time, or datetime value extracted from str is illegal, STR_TO_DATE() returns NULL and produces a warning.

* Syntax:
STR_TO_DATE(str,format)

* Arguments
**str: -
**format: -

* Return Types
  DATAETIME/DATE/TIME

* Example:
  STR_TO_DATE('01,5,2013','%d,%m,%Y') -> '2013-05-01'
  SELECT STR_TO_DATE('a09:30:17','a%h:%i:%s') -> '09:30:17'

* See more:
** [MySQL| https://dev.mysql.com/doc/refman/5.7/en/date-and-time-functions.html#function_str-to-date]





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