Thanks Hank. I'll try to split up the query into 2 separate queries. I think that the
reason the original query is so slow is that I don't have enough RAM allocated to
mysql. When the original query takes place, I see a process "Copying to tmp table on
disk". I believe it's writing all the data to the disk and then sorting it. I'd like
to try tweaking the my.cnf file to allow mysql to use more RAM. I just need someone
to help me edit the file because I'm not quite sure what I'm doing...
Thanks,
Grant
Hank <heskin@stripped> wrote: > Now that I know what's causing the slow
queries, what can I do to fix it?
The only thing I can suggest is breaking up the query into two parts -
the first part to retrieve just the product codes and salesrank, and
sort and limit that.. save in a temp table or use application code to
retrieve and print the rest of the product info. Sorting 300,000+
records in that huge result set is going to take some time (although
it shouldn't take 10 minutes).
-Hank
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