Please post the results of that query as run through EXPLAIN ANALYZE.

Also, I'm going to reply to this on pgsql-performance, which is probably where it better belongs.


Thomas F. O'Connell
Co-Founder, Information Architect
Sitening, LLC
110 30th Avenue North, Suite 6
Nashville, TN 37203-6320

On Mar 22, 2005, at 8:23 AM, Sabio - PSQL wrote:

How can I improve speed on my queries. For example this query takes one day executing itself and it has not finalized !!!
"create table tmp_partes as select * from partes where identificacion not in (select cedula from sujetos)"

partes have 1888000 rows, an index on identificacion
sujetos have 5500000 rows, an index on cedula

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