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From: Tom Lane <tgl@sss.pgh.pa.us>
To: A. Kretschmer <andreas.kretschmer@schollglas.com>
Cc: pgsql-sql@postgresql.org
Subject: Re: what exactly is a query structure?
Date: Fri, 26 Feb 2010 10:11:56 -0500
Message-ID: <27166.1267197116@sss.pgh.pa.us> (raw)
In-Reply-To: <20100226095358.GG11413@a-kretschmer.de>
References: <4B876F23.8040401@bankir.ru>
	<4B879803.5020006@bankir.ru>
	<20100226095358.GG11413@a-kretschmer.de>

"A. Kretschmer" <andreas.kretschmer@schollglas.com> writes:
> In response to silly sad :
>> my own wild guess:
>> string constant '*' is of type "unknown"

> Maybe. Add a explicit cast, for instance '*'::text

Definitely.  More recent versions of PG provide a more explicit error
message:

regression=# SELECT * from get_noobs();
ERROR:  structure of query does not match function result type
DETAIL:  Returned type unknown does not match expected type text in column "pass".
CONTEXT:  PL/pgSQL function "get_noobs" line 2 at RETURN QUERY

			regards, tom lane



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