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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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Summary: Support SQL FLOOR and CEIL functions with NanoSecond for
TIMESTAMP_TLZ (was: Support SQL FLOOR and CEIL functions with NanoSecond)
> 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 would first need to evaluate whether this level of
> precision is required. If the requirement is confirmed, it may necessitate
> the creation of a new data type with higher precision.
> This ticket aims to:
> # Investigate the need for nanosecond precision in CEIL and FLOOR functions.
> # Analyze the technical feasibility of extending Flink's type system to
> support nanoseconds in ceil and floor functions.
> # Identify potential changes required across Flink's core components,
> including data types, functions, and runtime execution.
> This research will guide whether a subsequent implementation task is needed
> to support the datatype which precision is higher than nanosecond.
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