Excel：如果满足条件，则对列和行求和

Question

I have a sheet with product names in column I and then dates from there on. For each date there are numbers of how many pieces of a certain product have to be made. I'm trying to sum all those numbers based on a product type, ie:

 I       K       L      M     ...

        30.8.   31.8.   1.9.   ...
MAD23     2       0      45    ...
MMR32     5       7      33    ...
MAD17    17      56       0    ...

MAD:    120  (2+0+45+17+56+0)
MMR:     45  (5+7+33)

What I'm doing now is sum the row first:

=SUM(K6:GN6)

MAD23 = 47
MMR32 = 45
MAD32 = 73

And then sum those numbers in column J based on part of the product name in column I:

=SUMIF(Sheet1!I6:I775;"MAD*";Sheet1!J6:J775)

MAD = 120
MMR = 45

Is it possible to do this with just one formula per criteria?

Answer 1

=SUM(IF(MID(Sheet1!I6:I775,1,3)="MAD",Sheet1!k6:gn775,""))

使用Ctrl + Shift + Enter

Answer 2

Just trying it on those three rows, I get

=SUM($K$6:$M$8*(LEFT($I$6:$I$8,LEN(I10)-1)=LEFT(I10,LEN(I10)-1)))

which is an array formula and must be entered with Ctrl Shift Enter

That's assuming that I10 is going to contain some characters followed by a colon and you want to match those with the first characters of I6:I8.