From: | John DeSoi <desoi(at)pgedit(dot)com> |
---|---|
To: | Markus Schaber <schabi(at)logix-tt(dot)com> |
Cc: | PostGIS Users Discussion <postgis-users(at)postgis(dot)refractions(dot)net>, PostgreSQL SQL List <pgsql-sql(at)postgresql(dot)org> |
Subject: | Re: Problem using set-returning functions |
Date: | 2006-03-27 13:32:39 |
Message-ID: | 7DB6EE64-AB49-4DA6-B690-21A53FD6045E@pgedit.com |
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Thread: | |
Lists: | pgsql-sql |
On Mar 27, 2006, at 5:41 AM, Markus Schaber wrote:
> navteq=# select foo,generate_x(bar) from test;
> ERROR: set-valued function called in context that cannot accept a set
> CONTEXT: PL/pgSQL function "generate_x" line 5 at return next
>
> However, it is fine to call other set returning functions in the same
> context:
With SRFs, you need to specify what you want to select. In other
words if you are calling generate_x(bar) you need "select * from
generate_x(bar)" -- "select generate_x(bar)" will not work.
So for your query I think you need something like:
select foo, (select x from generate_x(bar)) from test;
John DeSoi, Ph.D.
http://pgedit.com/
Power Tools for PostgreSQL
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