Luiz Gonzaga da Mata <[EMAIL PROTECTED]> writes:
>  Although to have changed they sort_mem/work_mem it for 1 MB, it did not 
> use this area in available memory for the connection to make the 
> creation of the temporary table.

Why would you expect it to, and why would you think there is any
advantage?  A small, short-lived temp table will probably never actually
be spilled to disk by the kernel (we never fsync them) so the actual
performance improvement would be minimal.

                        regards, tom lane

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