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feat: DISTINCT handling for Aggregate UDFs
- #25288
#25288
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mkleen
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feat: DISTINCT handling for Aggregate UDFs
#25288
mkleen
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apache:main
apache/datafusion:main
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Commits on Sep 12, 2026
feat: teach AggregateUDFImpl how it treats DISTINCT, and strip the flag when it is a no-op
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fix: keep DISTINCT on mixed aggregate nodes, and correct three mis-tagged functions
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refactor: simplify EliminateAggregateDistinct
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docs: correct how stddev, variance and approx_median handle DISTINCT
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fix: tag grouping as Ignored, align the UDAF guide, and mark DistinctHandling non_exhaustive
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Commits on Sep 14, 2026
Merge branch 'main' into eliminate-aggregate-distinct
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Merge branch 'main' into eliminate-aggregate-distinct
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Commits on Sep 15, 2026
Update datafusion/optimizer/src/eliminate_aggregate_distinct.rs
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Update datafusion/optimizer/src/eliminate_aggregate_distinct.rs
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Update datafusion/functions-aggregate/src/stddev.rs
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Update datafusion/functions-aggregate/src/approx_median.rs
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Update docs/source/library-user-guide/functions/adding-udfs.md
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Update datafusion/sqllogictest/test_files/aggregates_simplify.slt
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Update datafusion/expr/src/udaf.rs
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Update datafusion/functions-aggregate/src/bit_and_or_xor.rs
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Update datafusion/functions-aggregate/src/grouping.rs
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Update datafusion/functions-aggregate/src/first_last.rs
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Update datafusion/sqllogictest/test_files/aggregates_simplify.slt
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Update datafusion/optimizer/src/eliminate_aggregate_distinct.rs
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