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https://issues.apache.org/jira/browse/FLINK-14696?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zhenghua Gao closed FLINK-14696.
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Resolution: Duplicate
> Support precision of TimestampType in built-in SQL functions and operators
> --------------------------------------------------------------------------
>
> Key: FLINK-14696
> URL: https://issues.apache.org/jira/browse/FLINK-14696
> Project: Flink
> Issue Type: Sub-task
> Components: Table SQL / Planner
> Reporter: Zhenghua Gao
> Priority: Major
>
> Many built-in SQL functions and operators use long as internal representation
> of Timestamp type and only support millisecond precision. This ticket will
> check fix it and let them support nanosecond precision. The related SQL
> functions and operators are:
> * timestamp compare
> * timestamp +/- interval
> * extract function
> * timestampadd/timestampdiff function
> * to_timestamp function
> * cast between timestamp with different precision
>
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