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https://issues.apache.org/jira/browse/SPARK-57847?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Max Gekk updated SPARK-57847:
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Shepherd: Max Gekk
> Support the TIME data type in approx_count_distinct_for_intervals
> -----------------------------------------------------------------
>
> Key: SPARK-57847
> URL: https://issues.apache.org/jira/browse/SPARK-57847
> 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-57550 (extend support for the
> TIME data type).
> h2. Problem
> {{ApproxCountDistinctForIntervals}}
> (aggregate/ApproxCountDistinctForIntervals.scala) accepts
> numeric/date/timestamp/interval in {{inputTypes}} (~L68-70) and its endpoint
> validation (~L92-93), but not {{TimeType}}. This is not covered by
> SPARK-57557, which extended {{ApproximatePercentile}} and the sketch quantile
> aggregates.
> h2. Goal
> Support {{TimeType}} as the value column (and TIME endpoints) in
> {{approx_count_distinct_for_intervals}}.
> h2. Scope
> Add {{TimeType}} (or {{AnyTimeType}}) to the value + endpoints
> {{inputTypes}}; handle the nanos-of-day {{Long}} value in the counting path.
> h2. Acceptance criteria
> * The aggregate runs over a TIME column with TIME endpoints; results are
> consistent with the numeric behavior.
> h2. Testing
> {{ApproxCountDistinctForIntervalsSuite}}.
> h2. Dependencies
> None - independent.
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