Re: Query to check existence of stored procedure?

From: "Jim C(dot) Nasby" <jnasby(at)pervasive(dot)com>
To: Alexander Scholz <alexander(dot)scholz1(at)freenet(dot)de>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: Query to check existence of stored procedure?
Date: 2006-04-21 05:54:51
Message-ID: 20060421055451.GZ49405@pervasive.com
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If you're on a more recent version, you can try and select the procname
for a proc and trap the error:

decibel=# select 'abs(bigint)'::regprocedure;
regprocedure
--------------
abs(bigint)
(1 row)

decibel=# select 'abs(text)'::regprocedure;
ERROR: function "abs(text)" does not exist
decibel=#

If you don't care about arguments you can use regproc.

On Tue, Apr 18, 2006 at 08:26:49AM +0200, Alexander Scholz wrote:
> Hi Newsgroup,
>
> I need a query which can check for the existence of a certain stored
> procedure.
>
> (The pendant for MS SQL is
>
> IF EXISTS (SELECT * FROM "sysobjects" WHERE "id" =
> object_id(N'"MyTestStoredProcedure"') and OBJECTPROPERTY("id",
> N'IsProcedure') = 1)
> ...
> )
>
> Any help would be appreciated! :-)
>
> Thanx in advance,
>
> Alexander.
>
> ---------------------------(end of broadcast)---------------------------
> TIP 9: In versions below 8.0, the planner will ignore your desire to
> choose an index scan if your joining column's datatypes do not
> match
>

--
Jim C. Nasby, Sr. Engineering Consultant jnasby(at)pervasive(dot)com
Pervasive Software http://pervasive.com work: 512-231-6117
vcard: http://jim.nasby.net/pervasive.vcf cell: 512-569-9461

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