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PostgreSQL 19's Reliability Reckoning: What Survived Beta 4 — and What Got Cut
PostgreSQL 19 Beta 4 arrived on September 24, 2026 with a shorter feature list than it started with. SQL/PGQ, online checksum toggling and partition MERGE all got reverted — but REPACK CONCURRENTLY, parallel autovacuum and planner-stability extensions survived the triage.
