PostgreSQL: Upgrade Check and Error Code Cleanup
Two isolated hardening commits landed with no shared theme and no pull request activity. The highest-impact change adds a pg_upgrade check for arrays over system-assigned types, alongside improved error codes for SQL-reachable paths to enable translation.
Duration: PT2M6S
Episode overview
This episode is a short developer briefing from PostgreSQL.
It explains recent repository work in plain language.
- Show: PostgreSQL
- Published: 2026-09-22T13:05:18Z
- Audio duration: PT2M6S
Transcript excerpt
This excerpt keeps the crawler page concise. Listen to the episode or use the RSS feed for the full update.
Good morning, it's Tuesday, September 22nd, 2026, and this is your PostgreSQL briefing.
No single pattern today — just two isolated reliability fixes, with upgrade safety carrying the most weight. The activity feed shows no pull request activity, only these two commits.
First, upgrade risk. In commit 77f54eb, pg_upgrade now flags arrays built over system types with automatically assigned identifiers. The problem is straightforward: array storage embeds the element type identifier, and pg_upgrade doesn't rewrite user data. If you stored an array over an information schema domain,…
Second, error handling polish. In commit e8a3ee5, several documented SQL functions no longer return an internal error code. That matters because internal errors aren't translated. They now use proper codes, with more consistent messages for type modifier errors and safer display of non-printable characters in the…
What's next: review any upgrade pre-check warnings around system-type arrays, and expect translated, more consistent errors in affected SQL functions. If you maintain upgrade tooling or pre-upgrade testing, account for the new pre-check failure mode in automation.
That's the briefing for today.
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