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[VL] Add support for approx_count_distinct_for_intervals #11599

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#11729
Open
[VL] Add support for approx_count_distinct_for_intervals#11599
#11729
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malinjawi
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enhancementNew feature or request
@zhztheplayer

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@zhztheplayer
zhztheplayer
opened on Feb 10, 2026

An essential function for Spark CBO + histogram.

Error:

[main] WARN org.apache.spark.sql.execution.GlutenFallbackReporter - Validation failed for plan: ObjectHashAggregate[QueryId=113], due to: 
 - Validation failed with exception from: RegularHashAggregateExecTransformer, reason: Could not find a valid substrait mapping name for approx_count_distinct_for_intervals(s_store_sk#87088L, org.apache.spark.sql.catalyst.expressions.UnsafeArrayData@3915186b, 0.05, 0, 0).

Reference:

https://github.com/apache/spark/blob/ebd5b007fcf203eadcf8b037ab2b99577490f869/sql/core/src/main/scala/org/apache/spark/sql/execution/command/CommandUtils.scala#L401

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