Multi value Cascading Parameters Not working

Question

Hi ,
I have created two report parameters and want them as Cascading. District Parameter depends on Region Parameter which should allow Multi selection. When I select single value in Region it works perfectly. But when I choose multiple values, District turns
out to be a blank text box. Can you please advise on how to fix this?
I have used the In clause in my code
SELECT
DISTINCT
SalesDistrict
FROMDistrict(NOLOCK)
WHERESalesRegion
IN(@SalesRegion)
SG

Answer 1

that's because  "public sector,East" is passed as a string rather than multiple values.
you should split them into multiple rows...  there are several functions that do that.. you can pass the string to the function and use  IN clause look them in the district table.
below example is using xml but you can also use functions, if you want... just google  "split comma delimited string to multiple rows" function
declare @District table (Distrcit int,Region varchar(20))
Insert into @District values (1,'East'),(2,'West'),(3,'Public Sector')
declare @xml xml, @s nvarchar(max)
select @s = N'public sector,East'
set @xml = N'<root><r>' + replace(@s,',','</r><r>') + '</r></root>'
select * from @District where Region in
(select t.value('.','varchar(max)') as [delimited items]
from @xml.nodes('//root/r') as a(t))
refer http://www.kodyaz.com/articles/t-sql-convert-split-delimeted-string-as-rows-using-xml.aspx
Hope it Helps!!