Filtering on Multiple wildcards

Question

Hi. I'm using SSRS 2008 and I've created a report of some computers and I added a parameter to filter by computer name using a wildcard. Eg Computer* 
This is filtered using the Filter on the dataset so the Expression = Computer_Name 
Operator Like
Value <parameter for the report>
However my boss now decides that he wants to be able to filter by multiple computer names. Like
Computer*,Server*
Any ideas how I'd go about this I'm completely stuck. 

Answer 1

Hi ChirsC200,
According to your description, you want to have a multi value parameter to filter records which the field is like the values in parameter. Right?
In this scenario, we can’t use filters to achieve this goal because it only has AND logic between filters, but we need OR logic. And simply modification in query is not working as well. However, we can create a function to split the string in parameter and
put divided string into a table, then we compare the field with the records in the table and filter the records which are like the wildcards. We have tested this case in our local environment. Here are steps and screenshots for your reference:
1. Create a function in database. Execute the commands below:
CREATE FUNCTION [dbo].[SplitParameterValues] (@InputString NVARCHAR(max), @SplitChar VARCHAR(5))
RETURNS @ValuesList TABLE
param NVARCHAR(255)
AS
BEGIN
DECLARE @ListValue NVARCHAR(max)
SET @InputString = @InputString + @SplitChar
WHILE @InputString!= @SplitChar
BEGIN
SELECT @ListValue = SUBSTRING(@InputString , 1, (CHARINDEX(@SplitChar, @InputString)-1))
IF (CHARINDEX(@SplitChar, @InputString) + len(@SplitChar))>(LEN(@InputString))
BEGIN
SET @InputString=@SplitChar
END
ELSE
BEGIN
SELECT @InputString = SUBSTRING(@InputString, (CHARINDEX(@SplitChar, @InputString) + len(@SplitChar)) , LEN(@InputString)-(CHARINDEX(@SplitChar, @InputString)+ len(@SplitChar)-1) )
END
INSERT INTO @ValuesList VALUES( @ListValue)
END
RETURN
END
2. Create a procedure to get records which are like the wildcards in parameter.
Create PROCEDURE sp (@Type nvarchar(50))
AS
SELECT     DocID,Type
FROM         Computer c
inner join (SELECT [param] FROM SplitParameter
Values (@Type,',')) s on c.Type like (s.[param]+'%')  
Ps: You may need to modify in query part based on your table structure.
3. Go to report. Create a parameter, set specific value (Computer, Server….) in Available Values.
4. Create a dataset and get data for the Procedure sp.
5. Save and preview. It looks like below:
Reference:
[Forum FAQ]How do I add a search feature
in the parameter with long drop down list?
If you have any question, please feel free to ask.
Best Regards,
Simon Hou (Pactera)