Postgres Gotchas

Postgres FM

Nikolay and Michael discuss some Postgres Gotchas, things you might expect to work one way in fact working another way.
Here are some links to things they mentioned:

• Out episode on NULLs https://postgres.fm/episodes/nulls-the-good-the-bad-the-ugly-and-the-unknown
• Postgres Gotchas (list by Ian Barwick) https://sql-info.de/postgresql/postgres-gotchas.html
• Our episode on slow count https://postgres.fm/episodes/slow-count
• Discussion on X about major version upgrades and statistics https://x.com/samokhvalov/status/1844593601638260850
• Our episode on upgrades https://postgres.fm/episodes/upgrades
• Statistics Import and Export (commitfest entry which link to email thread) https://commitfest.postgresql.org/50/4538/
• vacuumdb https://www.postgresql.org/docs/current/app-vacuumdb.html
• vacuum_cost_delay https://www.postgresql.org/docs/current/runtime-config-resource.html#GUC-VACUUM-COST-DELAY
• Zero-downtime Postgres schema migrations need lock_timeout and retries (blog post by Nikolay) https://postgres.ai/blog/20210923-zero-downtime-postgres-schema-migrations-lock-timeout-and-retries
• Postgres Hacking 101: adding params, prevent_unqualified_deletes and prevent_unqualified_updates https://www.youtube.com/watch?v=samLkrC5xQA
• PostgREST suggestion to use pg-safeupdate https://docs.postgrest.org/en/v12/integrations/pg-safeupdate.html#pg-safeupdate
• DBOS (new company co-founded by Michael Stonebraker) https://www.dbos.dev

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What did you like or not like? What should we discuss next time? Let us know via a YouTube comment, on social media, or by commenting on our Google doc!

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Postgres FM is produced by:

• Michael Christofides, founder of pgMustard
• Nikolay Samokhvalov, founder of Postgres.ai

With special thanks to:

• Jessie Draws for the elephant artwork