Is there a problem with writing all of the data to a relational database and simply doing something like, 

SELECT tbl2.* FROM tbl2 WHERE tbl2.id NOT IN (SELECT tbl1.id FROM tbl1
+);

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?

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In reply to Re: Faster grep in a huge file(10 million) by InfiniteSilence
in thread Faster grep in a huge file(10 million) by Thomas Kennll

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