PostgreSQL 18: Zero-Downtime NOT NULL Constraint (Finally Native!)

PostgreSQL 18 finally adds a native way to add NOT NULL without locking the whole table.
Before v18 you had to fake it with a CHECK constraint → validate → flip.
Now you can just add NOT NULL NOT VALID and validate later — same safety, fewer steps, no downtime.

This update makes schema changes cleaner, safer and much harder to mess up.

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#PostgreSQL #PostgreSQL18 #Postgres #Database #SQL #TechShorts #ZeroDowntime #Migration #DBA

Видео PostgreSQL 18: Zero-Downtime NOT NULL Constraint (Finally Native!) канала ItSlang