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How to find missing values in two list, over 300,000 rows

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    How to find missing values in two list, over 300,000 rows

    Hello. I tried to use a match formula (A1, $A$1:$A$400000,0) to find the missing values between a larger/smaller list but it makes excel freeze up. Any alternatives?

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    Forum Expert Sam Capricci's Avatar
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    Re: How to find missing values in two list, over 300,000 rows

    maybe use countif against your larger list. something like =COUNTIF($A$1:$A$400000,B1)
    where B1 is your smaller list value (substitute as needed).
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    Forum Expert shg's Avatar
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    Re: How to find missing values in two list, over 300,000 rows

    Sort col A ascending and use

    =lookup(b1, $a$1:$a$400000) = b1

    Correct the reference to use the actual range, or use a dynamic range.
    Last edited by shg; 10-18-2016 at 05:22 PM.
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