On 2013-06-08 21:45:24 +0100, Simon Riggs wrote: > While fiddling with FK tuning, it was useful to be able to enable and > disable the DEFERRED mode of constraints. > > That is not currently possible in SQL, so I wrote this patch. Without > this you have to drop and then re-add a constraint, which is > impractical for large tables. > > e.g. > CREATE TABLE fktable (id integer, fk integer REFERENCES pktable (id)); > > ALTER TABLE foo > ALTER CONSTRAINT fktable_fk_fkey DEFERRED INITIALLY IMMEDIATE; > > Includes docs and tests. > > Currently works for FKs only. Potentially other constraints can be > supported in future.
I haven't looked at the patch in detail, but I am very, very much in favor of the feature in general… I have wished for this more than once, and it certainly cost me more time working around it than it would have cost to implement it. Thanks, Andres Freund -- Andres Freund http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
