From: Bruce Momjian <pgman@candle.pha.pa.us>
To: Joseph Barillari <jbarilla@princeton.edu>
Cc: pgsql-sql <pgsql-sql@postgresql.org>
Subject: Re: Temporary table weirdness
Date: Mon, 29 Apr 2002 10:04:06 -0400 (EDT)
Message-ID: <200204291404.g3TE46A26180@candle.pha.pa.us> (raw)
In-Reply-To: <m3elgzni0f.fsf@washer.barillari.org>
Yes, this is a known problem. You need to use plpgsql EXECUTE command
for any function query that deals with temp tables.
---------------------------------------------------------------------------
Joseph Barillari wrote:
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> Hi,
>
> I have a function that creates and destroys temporary tables in the
> course of its work, and have run into trouble if the function
> is executed more than once during a database session. A small
> proof-of-concept is attached below:
>
> cal=> create or replace function frob() returns integer as 'begin create temporary table foo(bar INT); insert into foo (bar) values (1); drop table foo; return 1; end;' language 'plpgsql';
> CREATE
>
> (seems pretty standard)
>
> cal=> select frob();
> frob
> ------
> 1
> (1 row)
>
> (OK so far...)
>
> cal=> select frob();
> NOTICE: Error occurred while executing PL/pgSQL function frob
> NOTICE: line 1 at SQL statement
> ERROR: Relation 68141 does not exist
>
> On the second call, PostgreSQL chokes. Any suggestions as to why
> would be appreciated.
>
> Oddly enough, redefining the function eliminates the error for the
> next function call.
>
> Thanks,
>
> Joe
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Bruce Momjian | http://candle.pha.pa.us
pgman@candle.pha.pa.us | (610) 853-3000
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To: pgsql-sql@postgresql.org
Cc: pgman@candle.pha.pa.us, jbarilla@princeton.edu
Subject: Re: Temporary table weirdness
In-Reply-To: <200204291404.g3TE46A26180@candle.pha.pa.us>
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