Horton

Allow NOT VALID foreign key constraints on partitioned tables

Álvaro Herrera <alvherre@alvh.no-ip.org>

View on postgr.es
Commit: b663b9436e7509b5e73c8c372539f067cd6e66c1
Author: Álvaro Herrera <alvherre@alvh.no-ip.org>
Date: 2025-01-23T14:54:38Z
Releases: 18.0 
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.

Author: Amul Sul <sulamul@gmail.com>
Discussion: https://postgr.es/m/CAAJ_b96Bp=-ZwihPPtuaNX=SrZ0U6ZsXD3+fgARO0JuKa8v2jQ@mail.gmail.com

Files

PathChange+/−
doc/src/sgml/ref/alter_table.sgml modified +0 −2
src/backend/commands/tablecmds.c modified +104 −46
src/test/regress/expected/foreign_key.out modified +91 −6
src/test/regress/sql/foreign_key.sql modified +68 −4

Documentation touched

Discussion