I have a file set up in database fashion that I am trying to find the easiest
way to summarize data using more than one criteria. I am also looking into
using tables. This database gets added to and resorted frequently so I did
not want to use Subtotals.
For instance a database of automobiles that includes Make, Model and several
other distinguishing fields. I was trying to use a SUMIF formula to give me
the total of all the Ford Explorers vs. Jeep Cherokees vs. Dodge Rams etc.
I could not figure out how to actually write a nested SUMIF formula on both
the Make and Model fields.
replace the hardcoded Ford and Explorer with cells like B2 and C2 in where
you would type the make and model thus avoiding to having to edit the
formula when you change make/model
Ranges need to be of the same size and cannot be the whole column like
A:A as opposed to A2:A100
The formula you have posted resolves a problem I have been having.
However, I cannot see why it works (as SUMPRODUCT multipllies corresponding
components in the given arrays and sums the answer). How can arrays that
don't have values be multiplied. Are the minus signs significant here. I
notice that if you remove them the formula doesnt work
The tests will return TRUE or FALSE.
Multiplying by the double unary (--) coerces these results to 1 and 0
respectively which are then used within the Sumproduct array
calculation.
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