SSRS dataset filter expression using OR

Question

I have a dataset that I need to set a filter for. What I need the filter to do is check 3 different fields to see if either one of them are in a parameter. The parameter is multi-value. So, I have a parameter set to 1, 2, 3. I need the dataset to return
records where either Field A, B, or C are IN 1, 2, 3.
Anyone know how to do this? I tried to have the filter expression = Fields!A.Value or Fields!B.Value or Fields!C.Value then the dataset filter operator "IN" and the dataset filter value = Parameter, but I just get an error on the dataset filter
(cannot evaluate filter expression error)

Answer 1

Hello,
Mulitple expressions added to SSRS dataset filter are evaluated as AND (Expr1 AND Expr1 AND Expr3). If you are looking for a OR like Expr1 Or Expr2 Or Expr3 then you can use this solution explained below.
Dataset Query used for this test:
select *
from (values ('Row1',1,1,4),('Row2',2,1,3),('Row3',3,1,2),('Row4',3,2,2),('Row5',5,3,2),('Row6',5,6,7),('Row7',2,6,7)) x(DataRow,A,B,C)
Report Parameter :
Defined a multi select report parameter named "Parameter1" with string datatype and added values 1, 2, 3.
Dataset Filter Expression:
=Filter(Parameters!Parameter1.Value,CStr(Fields!A.Value)).Length + Filter(Parameters!Parameter1.Value,CStr(Fields!B.Value)).Length + Filter(Parameters!Parameter1.Value,CStr(Fields!C.Value)).Length
The expression above uses the Filter function in SSRS to check if the field A\B\C has any match in the parameter1 mutli select parameter. If yes the length property will return a value > 0. Repeat the expression for all the other fields and add the Values
for length property.
Use > operator in the filter dialogue box
and value as 0 as shown in the snapshot below.
The output is shown below. Row 6 is missing as Field A, B or C doesnt have 1, 2,3 as values. If this is the output you are looking for this solution should work for you.
--sIbu