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https://issues.apache.org/jira/browse/SPARK-57842?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Max Gekk updated SPARK-57842:
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Shepherd: Max Gekk
> Support RANGE window frames with interval bounds over nanosecond-precision
> timestamps
> -------------------------------------------------------------------------------------
>
> Key: SPARK-57842
> URL: https://issues.apache.org/jira/browse/SPARK-57842
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 4.3.0
> Reporter: Max Gekk
> Priority: Major
>
> This sub-task is part of the umbrella SPARK-56822 (timestamps with nanosecond
> precision).
> h2. Problem
> Interval-bounded RANGE frames are only valid for microsecond timestamps:
> {{windowExpressions.scala}} {{isValidFrameType}} (~L110-117) allows interval
> bounds for {{TimestampType | TimestampNTZType}};
> {{WindowFrameTypeCoercion.createBoundaryCast}}
> (analysis/TypeCoercionHelper.scala ~L716-724) special-cases
> {{TimestampType}}; {{WindowEvaluatorFactoryBase}} (~L110-122) builds the
> bound via microsecond {{TimestampAddInterval}} / year-month only. A
> nanosecond ORDER BY column with {{RANGE BETWEEN INTERVAL ...}} fails with
> {{RANGE_FRAME_INVALID_TYPE}}.
> h2. Goal
> Allow a nanosecond ordering column with interval RANGE bounds, computing
> boundary values with the nanosecond-aware arithmetic (day-time interval done
> in SPARK-57501; year-month via SPARK-57825), preserving the remainder.
> h2. Scope
> Extend the three sites above to accept {{AnyTimestampNanoType}}; route
> boundary arithmetic through the nanosecond-aware add expression.
> h2. Acceptance criteria
> * {{OVER (ORDER BY ts_nanos RANGE BETWEEN INTERVAL '1' DAY PRECEDING AND
> CURRENT ROW)}} analyzes and evaluates correctly; ROW frames already work.
> h2. Testing
> {{DataFrameWindowFunctionsSuite}} / window SQL golden files.
> h2. Dependencies
> Do AFTER SPARK-57825 (year-month interval bound arithmetic); day-time bound
> uses resolved SPARK-57501.
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