I have added a filter expression using the like operator. What do I put in the value field? my parameter is named @test and I'd like the filter to function as a like %@test% would in SQL. I want it to act like %@test% so I can pass '' to get all values for the query.
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Possible duplicate of [T-SQL and the WHERE LIKE %Parameter% clause](http://stackoverflow.com/questions/14237755/t-sql-and-the-where-like-parameter-clause) – Sayed Abolfazl Fatemi Jan 20 '16 at 10:08
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@SayedAbolfazlFatemi that question is re: SQL, this is RE SQL Server Reporting Services which is different. – David Silva Smith Jan 20 '16 at 17:44
5 Answers
I got this to work by adding a filter expression with a like operator and setting the value to this:
="*" + Parameters!Roles.Value + "*"
To get all values I pass ''.

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You could also simply use string concatenation in the original Dataset that you want to filter on. You can access the parameters in the same manner as SQL:
WHERE fieldname LIKE '%' + @test + '%'
You can then link the report parameter @test to the @test in the dataset via the parameters option on Dataset Properties.

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For those querying against Oracle, use: WHERE fieldname LIKE '%' || :test || '%' – ashtonium Nov 19 '15 at 13:43
You should use this Query in the DATA SECCTION of the REPORT WIZARD.
SELECT * FROM HR.JOBS WHERE JOB_TITLE LIKE :JOB_TITLE | |'%'
you could use this simple query.
WHERE fieldname LIKE CONCAT('%',@test,'%')
Used CONCAT

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You need to set Parameter Value with Like operator and that will work like a charm ! (use double quotes(") near following example instead of single quote(') as the editor was not allowing me to put double quotes with asterisk(*) symbol)
LIKE "asterisk" & Parameters!Roles.Value & "asterisk"
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