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List:       postgresql-sql
Subject:    Re: [SQL] Function returning SETOF using plpythonu
From:       Adrian Klaver <aklaver () comcast ! net>
Date:       2007-01-29 14:29:43
Message-ID: 200701290629.43520.aklaver () comcast ! net
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On Monday 29 January 2007 6:12 am, Luís Sousa wrote:
> Thanks :-)
> That worked fine.
>
> >plpy.execute returns dictionary, and you need a list. You may try this:
> >
> >CREATE FUNCTION "test_python_setof"()
> >RETURNS SETOF text AS '
> >    records=plpy.execute("SELECT name FROM interface");
> >    return  [ (r["name"]) for r in records]
> >' LANGUAGE 'plpythonu';
>
> Then I tried to do some changes and try to return a SETOF type:
> CREATE TYPE "test_python_t" AS (
>     name varchar(50)
> );
>
> CREATE FUNCTION "test_python_setof"()
> RETURNS SETOF test_python_t AS '
>     records=plpy.execute("SELECT name FROM interface");
>     return  [ (r["name"]) for r in records]
> ' LANGUAGE 'plpythonu';
>
> And I'm getting ERROR:  tuple return types are not supported yet.
>
> On my production database server I'm using PostgreSQL 7.4 and using
> language plpgsql I'm returning some SETOF type without problems.
> Is this a feature that's missing on this version or I'm I doing
> something wrong on code? If is a feature missing, is already implemented
> on some version afterwards?
>
> Best regards,
> Luís Sousa
>
>
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>
>                http://archives.postgresql.org
SETOF in pl/pythonu appeared in 8.2

-- 
Adrian Klaver
aklaver@comcast.net

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