quack/mask-risc: DuckDB parity W-B + W-A — GroupReduce fold, AVG, SUM(CASE), NOT EXISTS, NULL-aware aggregates - #1265

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AdaWorldAPI merged 5 commits into

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claude/fold-distillation-pr-wave-s57uj7

Sep 23, 2026

Commits on Sep 22, 2026

feat(quack,mask-risc): fold grouped COUNT/MIN/MAX onto one GroupReduce terminal
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219d4a8
board: quack/DuckDB T0 parity — keyed-reduction family and the primitive basis
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feat(quack): DuckDB parity wave A — AVG, SUM(CASE), NOT EXISTS, NULL-aware aggregates
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cb8062e
board: parity W-A landed (AVG, SUM(CASE), NOT EXISTS, NULL validity)
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board: HAVING needs group existence, not a SIMD compare (open)
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