Thread: Possible temp table bug in PostgreSQL 7.4.7 / 8.0.1

Hello,

I've probably found a temp table bug in PostgreSQL (tested with 7.4.7 and
8.0.1 on Linux x86).


Here's a demonstration of the bug:

CREATE FUNCTION testfunction()
RETURNS void
AS '
    BEGIN
        CREATE TEMP TABLE testtable (field int4) ON COMMIT DROP;

        INSERT INTO testtable (field) VALUES (1);

        -- DROP TABLE testtable;

        RETURN;
    END;
' LANGUAGE 'plpgsql';


database=# SELECT testfunction();

 testfunction
--------------

(1 row)

database=# SELECT testfunction();
ERROR:  relation with OID 29308882 does not exist
CONTEXT:  SQL statement "INSERT INTO testtable (field) VALUES (1)"
PL/pgSQL function "testfunction" line 4 at SQL statement


No transaction has been started manually.

If I drop the temporary testtable manually within the PL/pgSQL function,
everything runs fine. Bug or feature? ;-)


Cheers,
Oliver

Uh, have you read the FAQ item about plpgsql and temporary tables?

---------------------------------------------------------------------------

Oliver Siegmar wrote:
> Hello,
>
> I've probably found a temp table bug in PostgreSQL (tested with 7.4.7 and
> 8.0.1 on Linux x86).
>
>
> Here's a demonstration of the bug:
>
> CREATE FUNCTION testfunction()
> RETURNS void
> AS '
>     BEGIN
>         CREATE TEMP TABLE testtable (field int4) ON COMMIT DROP;
>
>         INSERT INTO testtable (field) VALUES (1);
>
>         -- DROP TABLE testtable;
>
>         RETURN;
>     END;
> ' LANGUAGE 'plpgsql';
>
>
> database=# SELECT testfunction();
>
>  testfunction
> --------------
>
> (1 row)
>
> database=# SELECT testfunction();
> ERROR:  relation with OID 29308882 does not exist
> CONTEXT:  SQL statement "INSERT INTO testtable (field) VALUES (1)"
> PL/pgSQL function "testfunction" line 4 at SQL statement
>
>
> No transaction has been started manually.
>
> If I drop the temporary testtable manually within the PL/pgSQL function,
> everything runs fine. Bug or feature? ;-)
>
>
> Cheers,
> Oliver
>
> ---------------------------(end of broadcast)---------------------------
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>
>                http://archives.postgresql.org
>

--
  Bruce Momjian                        |  http://candle.pha.pa.us
  pgman@candle.pha.pa.us               |  (610) 359-1001
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On Friday 18 March 2005 18:08, Bruce Momjian wrote:
> Uh, have you read the FAQ item about plpgsql and temporary tables?

Doesn't seems like, eh? ;-)

...sorry for the not rtfm.