Finding rows where col A & B match and sum of col C = 0 - excel

Question

Hi all,
I am looking for a way to find rows under the following conditions:
Values of column A matches, values of column B matches AND values of column C add to 0.
I've tried sumproduct on conditional formatting without much success.
=SUMPRODUCT(($C$1:$C$9)*($A$1:$A$9=$A1)*($B$1:$B$9=$B1))=0
Perhaps VLOOKUP could be used? Any suggestion would be appreciated!

Answer 1

I'm using two helper columns. You could hide these in your spreadsheet. Col E = colA & colB. Col F has this formula:
SUMIFS(C$1:C$8, E$1:E$8, E1) = 0
This says if the sum of values in col C = 0 where col E matches the current row, TRUE, otherwise FALSE.
Then I added a conditional rule for A1:C8 to highlight in yellow. The rule is
=$F1
This says to highlight the row if the col F is true for that row. I think this will do what you want.
Note that my highlighted results are different than yours. You show 2 rows of 1015 in Col A + B in Col B as highlighted. Why would this be? (50) + 50 + 50 does not = 0? (Thanks to Jerry J for pointing this out.)

Answer 2

Maybe someone more clever than I can figure out how to do it without helper columns. Until then, here is one way to do it:
You need just one helper column - a column that does a running total for each value of A and B. So, put this in D2 and copy it down all the way to D9:
=SUMIFS($C$2:$C2,$A$2:$A2,$A2,$B$2:$B2,$B2)
That will sum all the values above the current cell that have the same A and B. What that does is find where the rows finally sum to zero.
Then you can use this in your conditional formatting:
=COUNTIFS($D2:$D$9,0,$A2:$A$9,$A2,$B2:$B$9,$B2)
That will find the zero below the current cell that has the same A and B. So, it doesn't include cells that have the same A and B that are below the 0.
If you put that second formula in E2 and copy it down all the way to E9 it looks like this:
A
B
C
D
E
Deal
Item
USD
Running Total
Conditional Formatting
1010
A
100
100
1
1015
A
-100
-100
0
1010
A
-99
1
1
1010
A
-1
0
1
1010
B
-100
-100
0
1015
B
-50
-50
1
1015
B
50
0
1
1015
B
50
50
0

Answer 3

If it's not a huge table and you want all rows where A and B match, try this:
=SUMIFS($C$2:$C$9, $A$2:$A$9, A2, $B$2:$B$9, B2) = 0
Or, if you highlight your rectangle and Insert - Table then make a new column with a formula of
=SUMIFS([USD], [Deal], [#Deal], [Item], [#Item]) = 0
then use that column for your conditional formatting formulas and, if you wish, hide the column. That way it's easier to read, you only need to enter the formula once instead of dragging it down the column, and it will store it once instead of once per row.
If it is a huge table then you are going to want to make a pivot table and then use that, because executing this for every row in your raw table will probably be a lot slower than a pivot table would, but using a pivot table is less user-friendly because the changes aren't instant unless you do some VBA to refresh the pivot table anytime something changes.