> I believe you can set work_mem to a different value just for the duration
> of
> a single query, so you needn't have work_mem set so high if for every
> query
> on the system. A single query may well use a multiple of work_mem, so you
> really probably don't want it that high all the time unless all of your
> queries are structured similarly. Just set work_mem='2047MB'; query;
> reset
> all;
Yes, executing "set work_mem='64MB'" right before the query should be just
fine. Setting work_mem to 2GB is an overkill most of the time (99.99999%).
Tomas