jmfarook

``` `http://services.odata.org/V4/Northwind/Northwind.svc/Employees/?$filter=contains(toupper(FirstName),%27C%27) http://services.odata.org/V4/Northwind/Northwind.svc/Employees/?$filter=contains(tolower(FirstName),%27C%27)` ``` this is query string but it always return both lower and uppercase