Hi Alvaro. On Thu, Jan 23, 2025 at 02:59:38PM +0000, Alvaro Herrera wrote: > Allow NOT VALID foreign key constraints on partitioned tables > > This feature was intentionally omitted when FKs were first implemented > for partitioned tables, and had been requested a few times; the > usefulness is clear. > > Validation can happen for each partition individually, which is useful > to contain the number of locks held and the duration; or it can be > executed for the partitioning hierarchy as a single command, which > validates all child constraints that haven't been validated already. > > This is also useful to implement NOT ENFORCED constraints on top.
morepork at [1] is telling that these two queries are missing an ORDER BY to ensure a proper ordering of the output generated: +-- Constraint will be invalid. +SELECT conname, convalidated FROM pg_constraint WHERE conrelid = 'fk_notpartitioned_fk'::regclass; [...] +-- All constraints are now valid. +SELECT conname, convalidated FROM pg_constraint WHERE conrelid = 'fk_notpartitioned_fk'::regclass; [1]: https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=morepork&dt=2025-01-23%2023%3A35%3A57 Thanks, -- Michael
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