Passing values for multi-value parameter in SSRS query string

Question

I have two reports built using SSRS 2005. The first report is set to navigate to the second when a specific field is clicked. I am using an expression similar to the following

Answer 1

Use join(Parameters!.Value,"&=") in the url for multivalued parameters.

If you are passing these parameters into a dataset you need to do a join(Parameters!.Value) when you pass the parameter in and then use a split function in SQL. This one works well:

ALTER FUNCTION [dbo].[fnSplitParam]
   (@RepParam nvarchar(4000), @Delim char(1)= ',')
RETURNS @Values TABLE (Param nvarchar(4000))AS
  BEGIN
  DECLARE @chrind INT
  DECLARE @Piece nvarchar(100)
  SELECT @chrind = 1 
  WHILE @chrind > 0
    BEGIN
      SELECT @chrind = CHARINDEX(@Delim,@RepParam)
      IF @chrind  > 0
        SELECT @Piece = LEFT(@RepParam,@chrind - 1)
      ELSE
        SELECT @Piece = @RepParam
      INSERT  @Values(Param) VALUES(CAST(@Piece AS VARCHAR))
      SELECT @RepParam = RIGHT(@RepParam,LEN(@RepParam) - @chrind)
      IF LEN(@RepParam) = 0 BREAK
    END
  RETURN
  END

I recommend using the single valued method if the end user does not have to select the parameters directly since it saves you 2 characters per parameter in the url.