From: | "Jim C(dot) Nasby" <decibel(at)decibel(dot)org> |
---|---|
To: | pgsql-general(at)postgresql(dot)org |
Subject: | Way to check for function existance |
Date: | 2004-11-23 21:55:55 |
Message-ID: | 20041123215555.GF783@decibel.org |
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Thread: | |
Lists: | pgsql-general |
Sorry if this has been covered before, but the mailing list search is
down right now.
What's the best way to check for the existance of a function? I saw
pg_function_is_visible(), but the problem is that I'd need to use
::regprocedure with it, and ::regprocedure generates an error if the
function doesn't exist. Since I can't trap the error in pgplsql that's
no use.
I'm also working on trying to do a select out of pg_proc, but I'm not
having a lot of luck there either...
# select oid,* from pg_proc where proname='user_write_lock_oid' and
proargtypes = ARRAY((SELECT oid FROM pg_type WHERE
typname='oid'))::oidvector;
ERROR: cannot cast type oid[] to oidvector
--
Jim C. Nasby, Database Consultant decibel(at)decibel(dot)org
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