Considering the following data :
sheet1 (customers)
A
0 customer_name
1 john
2 kevin
3 mickael
sheet2 (products)
A
0 product_name
1 book
2 ball
3 game
sheet3 (orders)
A B
0 customer_name product_name
1 john book
2 john game
3 mickael ball
I would like to know for each combination of customer and product if an order has been ordered and display it in the sheet1 to get something like that :
sheet1 (customers updated )
A B C D
0 customer_name book ball game
1 john 1 0 1
2 kevin 0 0 0
3 mickael 0 1 0
I know how to do that with "code" (by doing a macro in vba or a small exe in c# that will update the file), but I want to do it (if its possible) by just setting a formula inside my sheet (fyi, I can put the 3 inputs in the same sheet if needed, that's not a constraint
Updated :
with the previous configuration described, I have put the following formula in sheet1 B2 : =COUNTIFS(Sheet3!$A:$A;$A2;Sheet3!$B:$B;B$2), and when running the formula and extending it to every cell in my sheet I am getting everywhere the value #NAME? (I've translated if from french so I am not sure if its the right error in english). I think where I am making a mistake is that I am not using sheet2, how can I say first to "do all the combinations possible of customers insheet1 and products in sheet2 and look for those combinations in sheet3, knowing that I am in sheet1 and that I want to display the result like aking before?
=COUNTIFS(Sheet2!$A:$A,$A1,Sheet2!$B:$B,B$1). Or use a pivot table. - BigBen