I have been counting the occurance of model numbers using multiple
criteria over two or more columns. I've been using SUMIF with multiple
criteria in an array, but my problem is that, because I have 40,000 rows
of data, it takes an age to do the calculation.

Is there an easier/quicker way?

Example:
{=SUM(IF(($K$6:$K$40002=B127)*(LEFT($N$6:$N$40002, 2)="PR")*($L$6:$L$40002="V"),1,0))}

Thanks


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andrew.curley
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