Received: from maia.hub.org (unknown [200.46.204.183]) by mail.postgresql.org (Postfix) with ESMTP id 1FC83633B55 for ; Wed, 26 Aug 2009 10:30:54 -0300 (ADT) Received: from mail.postgresql.org ([200.46.204.86]) by maia.hub.org (mx1.hub.org [200.46.204.183]) (amavisd-maia, port 10024) with ESMTP id 08520-09 for ; Wed, 26 Aug 2009 13:30:40 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from moutng.kundenserver.de (moutng.kundenserver.de [212.227.17.10]) by mail.postgresql.org (Postfix) with ESMTP id 8C25C632F2A for ; Wed, 26 Aug 2009 10:30:40 -0300 (ADT) Received: from webserv.wug.de ([194.25.154.138]) by mrelayeu.kundenserver.de (node=mrbap0) with ESMTP (Nemesis) id 0MKsym-1MgIaD00Wp-000mcW; Wed, 26 Aug 2009 15:30:38 +0200 Received: from kretschmer by webserv.wug.de with local (Exim 3.36 #1) id 1MgIaC-0005Cn-00 for pgsql-sql@postgresql.org; Wed, 26 Aug 2009 15:30:36 +0200 Date: Wed, 26 Aug 2009 15:30:36 +0200 From: "A. Kretschmer" To: pgsql-sql@postgresql.org Subject: Re: Selecting values from comma separated string Message-ID: <20090826133036.GK32599@a-kretschmer.de> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-OS: Debian/GNU Linux - weil ich es mir Wert bin! User-Agent: Mutt/1.5.9i X-Provags-ID: V01U2FsdGVkX19xsUsuWK3ogsCB+8krH2yB8Cgy8FuqHR5zBYc BnkYadVDR/5QOD+QrH918YxiLlmUjG51tNwU/W9EjdqHA9TxX7 ckalVDH4fftlru8rfO3+Q== X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=-2.599 tagged_above=-10 required=5 tests=BAYES_00=-2.599 X-Spam-Level: X-Archive-Number: 200908/128 X-Sequence-Number: 33037 In response to Nacef LABIDI : > Hi all, > > I want to write a function that takes as param a comma separated values string > and perform a select matching these values. > > Here is the string '1,3,7,8' > > And I wan to perform a : SELECT * FROM my_table WHERE id IN (1, 3, 7, 8); Use EXECUTE sql_string, see http://www.postgresql.org/docs/8.4/interactive/plpgsql-control-structures.html For instance, simple example, untested: create function foo (my_string) returns setof record as $$ declare sql text; begin sql:='SELECT * FROM my_table WHERE id IN (' || $1 || ')'; return query execute sql; end; The variable sql contains the whole query, and then execute that. HTH, Andreas -- Andreas Kretschmer Kontakt: Heynitz: 035242/47150, D1: 0160/7141639 (mehr: -> Header) GnuPG-ID: 0x3FFF606C, privat 0x7F4584DA http://wwwkeys.de.pgp.net