So the first file is just a lookup of the (upto 200) names for each column; and the second file has one column per name and each line contains 1 boolean attribute for each item and there can be 1 million attributes?

And you want to basically count the number of true attributes for each item?

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In reply to Re: Best way to store/access large dataset? by BrowserUk
in thread Best way to store/access large dataset? by Speed_Freak

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