Benchmark single-column GROUP BY: hash vs direct-indexed flat array#22479

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nathanb9 wants to merge 5 commits into

apache:mainfrom

nathanb9:benchmark-single-group-by-flat-primitive

Commits on May 17, 2026

Fix correlated aggregate empty defaults
nathanb9
committed

Commits on May 20, 2026

Use return_field instead of return_type in decorrelation
Nathan Bezualem
committed
Update window test snapshot and mark approx_distinct non-nullable
Nathan Bezualem
committed

Commits on May 22, 2026

Address review comments: simplify decorrelate, add regr_count non-nullable, fix snapshot

nathanb9
authored and
Nathan Bezualem
committed

Commits on May 23, 2026

feat: add GroupValuesFlatPrimitive and benchmark for direct-indexed single-column GROUP BY

Nathan Bezualem
and
claude
committed