From: Jean-Paul Argudo <jean-paul@argudo.org>
To: Scott Yohonn <syohonn@gmail.com>
Cc: pgsql-sql@postgresql.org <pgsql-sql@postgresql.org>
Subject: Re: PL/PGSQL - How to pass in variables?
Date: Sun, 14 May 2006 17:44:50 +0200
Message-ID: <44675072.8030104@argudo.org> (raw)
In-Reply-To: <ff1df1410605140828s2ac7c170j9d7c4e5b2b0a1f5c@mail.gmail.com>
References: <ff1df1410605140828s2ac7c170j9d7c4e5b2b0a1f5c@mail.gmail.com>
Hi Scott,
You'll have to execute dynamic SQL (see doc chapter "36.6.5. Executing
Dynamic Commands") for your function to work:
CREATE FUNCTION get_table_count(tablename text) RETURNS integer AS
$$
DECLARE
--tablename ALIAS FOR $1;
rowcount INTEGER;
BEGIN
execute 'SELECT count(*) FROM '||tablename into rowcount;
return rowcount;
END;
$$ LANGUAGE 'plpgsql';
select get_table_count('bar');
get_table_count
-----------------
3
(1 row)
Cheers,
--
Jean-Paul Argudo
www.PostgreSQLFr.org
www.dalibo.com
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Cc: jean-paul@argudo.org, syohonn@gmail.com
Subject: Re: PL/PGSQL - How to pass in variables?
In-Reply-To: <44675072.8030104@argudo.org>
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