SQL style null-on-empty semantics for Sum and Mean - #9113

Merged

mhk197 merged 18 commits into

mk/unify-sums-v2

Aug 7, 2026

Commits on Aug 7, 2026

Use canonical partial state for Sum
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61bf257
Encode Sum partial shape in aggregate options
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a3e5f33
Simplify grouped aggregate benchmark helpers
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09a1b4c
Preserve cached stat validation outside Sum
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1a78215
Special-case Sum stat result dtype
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784c690
Restore cached Sum fast path
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31ca2c2
clean
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8dadbdd
Validate canonical Sum partial state
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7dc9887
Narrow Sum helper visibility
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4f60d67
fix
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b36dab0
fix
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daaad48
Use canonical Sum partials at runtime
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37dbbb6
Optimize grouped sum finalization
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0bc5ac5
Update null-on-empty Sum expectations
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25d8216
fix
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86f1af8
fix
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1664756
perf: avoid grouped sum bitmap appends
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bf3c8f5
perf: streamline sum partial handling
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e2b15cb