Just a small warning to all that want to copy this:

Don't do this on a database that can be changed while you are working!

A (real) database provides you some data integrity and consistency that won't work between multiple statements unless you manually start locking rows/tables.

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In reply to Re: Basic Perl array intersection faster than mysql query join. by Beechbone
in thread Basic Perl array intersection faster than mysql query join. by punch_card_don

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