[jira] [Created] (FLINK-15528) Support higher precision of TIMESTAMP type as rowtime attribute

["Jark Wu (Jira)" <ji...@apache.org>]

Jark Wu created FLINK-15528:
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             Summary: Support higher precision of TIMESTAMP type as rowtime attribute
                 Key: FLINK-15528
                 URL: https://issues.apache.org/jira/browse/FLINK-15528
             Project: Flink
          Issue Type: New Feature
          Components: Table SQL / Planner
            Reporter: Jark Wu


Currently, we only support TIMESTAMP(3) as rowtime attribute. But Blink planner already opened the door for TIMESTAMP(9). And many built-in functions will return TIMESTAMP(9), e.g. {{TO_TIMESTAMP(VARCHAR)}}, see FLINK-14925. 

If a user use TO_TIMESTAMP(log) to parser a string to timestamp and want use it as rowtime attribute, it will fail because the 9 precision. I would be more convenient for users if we can support TIMESTAMP(9) as rowtime attribute. 



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