Re: how to show foreign keys of a table

On Tue, 26 Dec 2000, T. Dekany wrote:

> Hi,
> in psql, the command "\d <table>" gives me the table-definitions, but
> the defined foreign keys don't show up. How can I get those? How can I
> check, what foreign keys a table has?
> Thanx

This was posted to the list a while ago, compliments of Michael Fork
<mfork(at)toledolink(dot)com>:

SELECT pt.tgargs, pt.tgnargs, pt.tgdeferrable, pt.tginitdeferred,
pg_proc.proname, pg_proc_1.proname FROM pg_class pc,
pg_proc pg_proc, pg_proc pg_proc_1, pg_trigger pg_trigger,
pg_trigger pg_trigger_1, pg_proc pp, pg_trigger pt
WHERE pt.tgrelid = pc.oid AND pp.oid = pt.tgfoid
AND pg_trigger.tgconstrrelid = pc.oid
AND pg_proc.oid = pg_trigger.tgfoid
AND pg_trigger_1.tgfoid = pg_proc_1.oid
AND pg_trigger_1.tgconstrrelid = pc.oid
AND ((pc.relname= '<< TABLENAME >>>')
AND (pp.proname LIKE '%%ins')
AND (pg_proc.proname LIKE '%%upd')
AND (pg_proc_1.proname LIKE '%%del')
AND (pg_trigger.tgrelid=pt.tgconstrrelid)
AND (pg_trigger_1.tgrelid = pt.tgconstrrelid));

--
Dominic J. Eidson
"Baruk Khazad! Khazad ai-menu!" - Gimli
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