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I'm not sure what your test is supposed to illustrate or what you think memory has to do with speed in this case, but as the maintainer of DBD::CSV I can assure you that it was not built to handle a million rows quickly. Use SQLite or a full RDBMS for data sets of that size. That said, there are some big speed improvements coming to DBD::CSV soon (a new version of its SQL engine SQL::Statement). I'll announce it on this site when its ready.

In reply to Re: DBD::CSV eats memory by jZed
in thread DBD::CSV eats memory by perlmonkdr

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