laser wrote:
> SELECT url,sum(ct) as ctperkw from ctrraw group by url order by ctperkw
> desc limit 1000;
> and the query run out of memory, the log file attached.
Have you run ANALYZE recently? You might be running into the well-known
problem that hashed aggregation can consume an arbitrary amount of
memory -- posting the EXPLAIN for the query would confirm that.
-Neil