Good day,

I am making the sum of a range that varies in length. For example

Cell(1, B) = SUM(A1:A10)

The cells A1 to A10 are a database that is updated daily, and the number of
rows varies also daily. So one day, the sum could be A1:A7, and the next day
it is A1:A12. Also, the range sometimes needs to start at A1, sometimes A3
or A5, it is never the same.

I would need a way to have the last value of my range as a variable instead
of a fix value.

The final formula should ideally fit in only one cell. I am thinking of
using the count() or the Row() function within my SUM formula but nothing
works.

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Thanks
Sebastien