The problem you're having here is that you don't really know what "sending data" means in the MySQL status field. You probably should just ignore that and look at the results of EXPLAIN instead.

Caching the query results can be useful if you're doing paging of a very slow query, but it should be your last resort. It complicates things.

Since this is not really Perl-related, my suggestion would be to take your query and any questions about the EXPLAIN to the MySQL users lists, which is very helpful.

In reply to Re: DBI mysql insert into select speed :-/ by perrin
in thread DBI mysql insert into select speed :-/ by Cagao

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