I am looking for some advice on best way of doing this. I have a student table and a location table that contains a Home city field. What I am wanting to do is rather then displaying a long list of all the cities in my parameter, I simply want the users to select from 'London', 'Others' or 'field is blank'. Where 'Others' would display any student that has home city other than London and field is blank displays any student where no home city is recorded.
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