Postgres 19 slips to November after AI review surfaces more bugs

PostgreSQL 19 has dropped about 8 to 10 significant features since its beta began, and The Register reports the release is now expected around 19 November instead of late September or early October. Core developer Peter Eisentraut writes that some reverted features had deep design flaws, but AI-assisted code review also turned up a long tail of small edge-case bugs, leaving teams with lists of around forty defect reports to fix in too little time. He says this is not "vibe coding", because the affected code was written before AI coding tools were common, and that senior developers were also tied up with security fixes from April to August. The release still includes REPACK CONCURRENTLY, logical replication of sequences and planner hints, and most reverted features should return in Postgres 20. On Hacker News (176 points, 65 comments) several commenters welcome AI used to find bugs rather than write code, and several say they see the same pattern in their own codebases. Sceptics push back: one cites a Linux kernel case where only 6 to 8 of 82 AI-reported bugs were real, and another says AI can find an endless stream of bugs that may never matter. One developer who is rewriting Postgres in Rust (pgrust) blames a thin test suite for edge cases, with AI only exposing old bugs. There is no consensus on whether holding features back was the right call. Sorted take: Run AI review early, not in the last weeks before a launch, because every small fix still costs a person's time.