Re: Querying constraints? - Mailing list pgsql-sql

From Chris Mair
Subject Re: Querying constraints?
Date
Msg-id 1155237920.5893.50.camel@dell.home.lan
Whole thread Raw
In response to Querying constraints?  (Lexington Luthor <Lexington.Luthor@gmail.com>)
Responses Re: Querying constraints?  (Chris Mair <chrisnospam@1006.org>)
List pgsql-sql
> 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




pgsql-sql by date:

Previous
From: Osvaldo Rosario Kussama
Date:
Subject: Re: date arithmetic
Next
From: Chris Mair
Date:
Subject: Re: Querying constraints?