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https://issues.apache.org/jira/browse/FLINK-36984?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hanyu Zheng updated FLINK-36984:
--------------------------------
    Description: 
Now the precision of FLOOR and CEIL functions for 
TIMESTAMP_LTZ is millisecond,  so we need introduce nanosecond for 
TimestampFloor and 
timestampCeil to increase precision of millisecond when use 
CAST(LocalDateTime AS TIMESTAMP_LTZ(4))

  was:
Now the precision of FLOOR and CEIL functions for TimeStampLtz is millisecond,  
so we need introduce nanosecond to `timestampFloor` and 
`timestampCeil` to increase precision of millisecond


> Increase precision of SQL FLOOR and CEIL functions for TIMESTAMP_LTZ
> --------------------------------------------------------------------
>
>                 Key: FLINK-36984
>                 URL: https://issues.apache.org/jira/browse/FLINK-36984
>             Project: Flink
>          Issue Type: Bug
>            Reporter: Hanyu Zheng
>            Priority: Major
>
> Now the precision of FLOOR and CEIL functions for 
> TIMESTAMP_LTZ is millisecond,  so we need introduce nanosecond for 
> TimestampFloor and 
> timestampCeil to increase precision of millisecond when use 
> CAST(LocalDateTime AS TIMESTAMP_LTZ(4))



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