Twp multi select parameters in SSRS not displaying results for when selected more than one value

Question

I have an issue with SSRS report not populating second multi value drop down list which is dependent upon first multi-valued drop down list and hence not populating report.

Answer 1

You have 2 options.

Option 1. Make the SSRS dropdown a single value dropdown.

If that is not a viable option, then here is option 2:

You are going to have to make the data type for the @Office and @Servicetype parameters in the stored procedure something like an (n)varchar(1000); something long enough to handle a string with all possible values. Then you have to split the string into individual values so you can use them in the IN clause. Here is a split UDF I have used in the past (and posted on this site several times).

CREATE FUNCTION [dbo].[udf_Split] 
   (  @List      varchar(8000), 
      @Delimiter varchar(5)
   ) 
   RETURNS @TableOfValues table 
      (  RowID   smallint IDENTITY(1,1), 
         [Value] varchar(100) 
      ) 
AS 
   BEGIN

      DECLARE @LenString int 

      WHILE len( @List ) > 0 
         BEGIN 

            SELECT @LenString = 
               (CASE charindex( @Delimiter, @List ) 
                   WHEN 0 THEN len( @List ) 
                   ELSE ( charindex( @Delimiter, @List ) -1 )
                END
               ) 

            INSERT INTO @TableOfValues 
               SELECT substring( @List, 1, @LenString )

            SELECT @List = 
               (CASE ( len( @List ) - @LenString ) 
                   WHEN 0 THEN '' 
                   ELSE right( @List, len( @List ) - @LenString - 1 ) 
                END
               ) 
         END

      RETURN 

   END 

Once you have that in place (in your database), you can change your SP code to look like this in the WHERE clause.

WHERE 
    fa.new_sitename IN (SELECT value FROM dbo.udf_Split(@Office, ','))
    AND fs.skillname IN (SELECT value FROM dbo.udf_Split(@Servicetype, ','))

Enjoy!