SSRS：如何根据条件求和

Question

I have table of the structure:-

Row1:- not inside Details group.

Row 2:- Dynamically populating row. with sequence as:-

A X

A1 1

A2 2

B Y

B1 30

B2 40

I need to calculate value of Y(which is Value of B1+B2) and X(which is Value of A1+A2)

Also in Row 1 I need to display X+Y.

Please note:- I am not sure about the number of rows which can be there in either A or B. So Y can be B1+B2+B3.... so on.

Also A and B are being populated by the same dataset.

Answer 1

It's a bit unclear as to how your data is set up so I can't give a good answer but for SUMming based on a condition you'd want to do something like:

=SUM(IIF(FIELDS!A.Value = "X", FIELDS!UNKNOWN?.Value, 0))

This would SUM all of the UNKNOWN field when field A = x .

If this isn't what you were looking for, try adding your field names and relate them to your values.