[branch 52] Fix grouping set subset satisfaction#19855
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gabotechs merged 1 commit intoapache:branch-52from Jan 16, 2026
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[branch 52] Fix grouping set subset satisfaction#19855gabotechs merged 1 commit intoapache:branch-52from
gabotechs merged 1 commit intoapache:branch-52from
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## Summary - Fixes incorrect results from ROLLUP/CUBE/GROUPING SETS queries when using multiple partitions - The subset satisfaction optimization was incorrectly allowing hash partitioning on fewer columns to satisfy requirements that include `__grouping_id` - This caused partial aggregates from different partitions to be finalized independently, producing duplicate grand totals Closes apache#19849
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alamb
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This reverts commit eb00fe2.
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