feat: parallel scatter, composite keys, LIST prune, plan-cache redistribute - #61
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renecannao merged 3 commits intoAug 20, 2026
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…ribute Flatten UNION ALL remotes so N shards open together. Route composite HASH keys, fail unknown tables, and move rows on shard-key UPDATE. LIST misses fail closed and BETWEEN/IN prune; composite colocated joins push when every key part is equated. Cache the logical plan and re-distribute on each hit.
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- Composite RANGE now routes and prunes on the first key component (LIST still rejects composites; HASH uses all parts). - Semi-join prune: when one side of a join is sharded and the other is not, the engine materializes the small side and pushes an IN-list onto the sharded probe side. - New demo scripts for PostgreSQL shards (16432/16433) exercising RANGE + LIST + cross-shard 2PC with DistributedTransactionManager in POSTGRESQL mode. - sqlengine now auto-selects PostgreSQL 2PC dialect when all backends are pgsql://. - Added planner and live-backend tests; full suite now 1344 passed. Stacked on PR #61.
…range feat: composite RANGE, semi-join prune, PG LIST/RANGE + 2PC demo
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Summary
col1+col2), fail-closed unknown tables, and shard-key UPDATE that moves the row.Stacked on #60 (
fix/shard-prune-pg-docs).Test plan
./run_tests --gtest_brief=1— 1341 passed, 39 skipped