Question

Suppose I have this simple table

UserID|Name  |Aid ID
  1   |Bob   | 3
  2   |Alice | 1
  3   |Ted   | 4
  4   |Sam   | 2

In a query, I would have to list the name of the person, and the name of the person that they aid. I thought about doing a View, but I feel like this could be done in a simple query than creating a view. How would I do that, and how does the query work exactly, like the fundamentals behind it?

Answer 1

you need to join the table to itself

SELECT  a."UserID",
        a."Name",
        b."Name" As AIDName
FROM    tableName a
        INNER JOIN tableName b
            ON a."AidID" = b."UserID"

• SQLFiddle Demo