perf: DirectIndexAgg for low-cardinality integer GROUP BY#157

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poyrazK wants to merge 21 commits into

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perf/group-by-optimization

Commits on May 18, 2026

Performance investigation: GROUP BY aggregation fixes
poyrazK
committed

Commits on May 19, 2026

Re-implement parallel scan with ThreadPool and steal() method
poyrazK
committed

Commits on May 21, 2026

Add DirectIndexAgg for low-cardinality integer GROUP BY
poyrazK
committed
Fix vectorized path activation for GROUP BY with unanalyzed tables
poyrazK
committed
style: automated clang-format fixes

poyrazK
authored and
github-actions[bot]
committed
Clean up DirectIndexAgg: remove dead code, mark slot valid in find_or_insert
poyrazK
committed
Add OpenAddressHashAgg class for efficient hash-based aggregation
poyrazK
committed
style: automated clang-format fixes

poyrazK
authored and
github-actions[bot]
committed
Wire OpenAddressHashAgg into process_input_batch
poyrazK
committed

Commits on May 22, 2026