Hello,

The first time I run a query against this function (using Npgsql):

declare
r_cursor1 cursor for

SELECT * from tmp_table;

begin

CREATE TEMPORARY TABLE tmp_table
(
testcol integer
) ON COMMIT DROP;

INSERT INTO tmp_table
SELECT 0;

open r_cursor1;

return 0;
end;

I get this error:

ERROR: XX000: relation 1090457025 is still open

All subsequent times I get this error:

ERROR: 42P01: relation with OID 1090457025 does not exist

What am I doing wrong?

(Sorry if this is a basic question.)

Thanks in advance...

"L. Fletcher" <lucasf@vagabond-software.com> writes:
> I get this error:
> ERROR: XX000: relation 1090457025 is still open

This is an 8.0 bug fixed in 8.0.1.

> All subsequent times I get this error:
> ERROR: 42P01: relation with OID 1090457025 does not exist=20

This is because plpgsql caches plans and therefore can't cope with
tmp_table not being the identical same table from run to run of the
function. Sooner or later we will probably fix that, but in the
meantime consider using an ON COMMIT DELETE ROWS temp table, created
only once per connection, instead.

regards, tom lane

---------------------------(end of broadcast)---------------------------
TIP 8: explain analyze is your friend