Beginner SQL section: avoiding repeated expression

Question

I\'m entirely new at SQL, but let\'s say that on the StackExchange Data Explorer, I just want to list the top 15 users by reputation, and I wrote something like this:

Answer 1

You could simply re-write the WHERE clause

where reputation > 10000

This won't always be convenient. As an alternativly, you can use an inline view:

SELECT
  a.DisplayName, a.Id, a.Reputation, a.RepInK 
FROM 
   (
        SELECT  TOP 15  
          DisplayName, Id, Reputation, Reputation/1000 As RepInK 
        FROM 
          Users 
        ORDER BY Reputation DESC 
    ) a
WHERE 
  a.RepInK > 10