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Working with large dataset - alternatives to SLOW sumproduct?

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    Working with large dataset - alternatives to SLOW sumproduct?

    Hello guys,

    I'm working with relatively large dataset (ten thousands of rows) and I need to sum up certain values (approximately a hundred of sums in total) from the data based on various criteria. I tried to use sumproduct which works correctly in this case, but terribly slowly as well.
    Simplified version of the dataset is attatched.
    Two criteria in columns A and B have to be fulfiled, numbers from certain columns are then added up. Number of columns to sum up varies, but they are always next to each other.
    My (really time-consuming) solution of the problem is included as well.

    I am looking for some combination of functions which could deal with the problem much more quickly.

    Thank you very much for all your suggestions.
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    Forum Moderator zbor's Avatar
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    Re: Working with large dataset - alternatives to SLOW sumproduct?

    Will this be faster:

    Formula: copy to clipboard
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  3. #3
    Forum Moderator zbor's Avatar
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    Re: Working with large dataset - alternatives to SLOW sumproduct?

    Or add helper (red) column and avoid SUMPRODUCT
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