SQL query doubts

SQL query doubts

  
I would like to understand what exactly this query is doing.

I SELECT attribute Name from entity Clinic and name it ClinicName?
What about the next one: 'Particular' EntityName,?

SELECT 
        {Clinic}.[Name] ClinicName, 
       'Particular' EntityName,
        {Patient}.[Id] PatientId, 
That syntax ('Particular' EntityName) will create a field in the output record called EntityName filled with the literal 'Particular' for every record returned.  Not sure why/how this is being created but that's what that syntax does.

Hope this helps,
Curt
I was a bit confused with that one. You are right Curt, it's not the best implementation, but that's what it's doing...
Thanks