iam creating parameterized dashboard using sql not with metadata .
i hava a problem creating parameters
my database table having 4 columns they are name,candname,sta,submitted_rate.
i wanted to create parameter for column called name .how do i dothis ,i had gone through examples but i colud not get solution so can u provide me any examples or screen shots to do this .
actually i wrote query is

select sta from details
where sta=${sta}
please reply me please