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https://issues.apache.org/jira/browse/FLINK-36898?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hanyu Zheng updated FLINK-36898:
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Description: Currently, Flink does not support nanosecond precision for the
CEIL and FLOOR functions. This limitation exists because Flink does not have a
data type with precision greater than nanoseconds. To introduce support for
nanoseconds in these functions, we can suppose ceil and floor nanosecond return
same answer, because we didn't support a data type with precision greater than
nanoseconds, this is an feasible way to support nanosecond. (was: Currently,
Flink does not support nanosecond precision for the CEIL and FLOOR functions.
This limitation exists because Flink does not have a data type with precision
greater than nanoseconds. To introduce support for nanoseconds in these
functions, we can suppose can support ceil and floor nanosecond return same
answer, because now we didn't support a data type with precision greater than
nanoseconds.)
> Support SQL FLOOR and CEIL functions with NanoSecond for TIMESTAMP_TLZ
> ----------------------------------------------------------------------
>
> Key: FLINK-36898
> URL: https://issues.apache.org/jira/browse/FLINK-36898
> Project: Flink
> Issue Type: Improvement
> Reporter: Hanyu Zheng
> Priority: Major
>
> Currently, Flink does not support nanosecond precision for the CEIL and FLOOR
> functions. This limitation exists because Flink does not have a data type
> with precision greater than nanoseconds. To introduce support for nanoseconds
> in these functions, we can suppose ceil and floor nanosecond return same
> answer, because we didn't support a data type with precision greater than
> nanoseconds, this is an feasible way to support nanosecond.
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