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
Branch
------
master
Details
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https://git.postgresql.org/pg/commitdiff/b663b9436e7509b5e73c8c372539f067cd6e66c1
Modified Files
--------------
doc/src/sgml/ref/alter_table.sgml | 2 -
src/backend/commands/tablecmds.c | 150 +++++++++++++++++++++---------
src/test/regress/expected/foreign_key.out | 97 +++++++++++++++++--
src/test/regress/sql/foreign_key.sql | 72 +++++++++++++-
4 files changed, 263 insertions(+), 58 deletions(-)
