> Is is possible to query from my application whether there is a primary
> key or unique constraint on a given table and field name(s)?
Curiously enough, I just answered a similar question on the pgsql-admin
list. Try this:
SELECT c.relname as table, r.conname as contraint_name, r.contype as
contraint_type, pg_catalog.pg_get_constraintdef(r.oid, true) as
constraint_definition FROM pg_catalog.pg_constraint r,
pg_catalog.pg_class c WHERE c.oid = r.conrelid;
Bye,
Chris
--
Chris Mair
http://www.1006.org