In stored procedures I used something like
BEGIN
CREATE TEMPORARY TABLE tmp ...
EXCEPTION
WHEN ... THEN ...
END
See pg error codes for details (I don't remember exactly, but maybe it is a dumplicate_table or duplicate_object exception).
On 3/25/07, Tom Lane <tgl@sss.pgh.pa.us> wrote: "dfx" <dfx@dfx.it> writes:
> how I can check the existance of temporary table?
> I.e. wich query I have to use to know if MY_TEMP_TABLE exists?
As of 8.2 you can do
SELECT ... FROM pg_class
WHERE relname = 'whatever' AND relnamespace = pg_my_temp_schema();
In earlier releases pg_my_temp_schema() isn't built in, so you have
to do some pushups to determine which schema is your temp schema.
regards, tom lane
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TIP 9: In versions below 8.0, the planner will ignore your desire to
choose an index scan if your joining column's datatypes do not
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