LEFT JOIN Using distinct?

Question

Originally, I have 15 employees on my table. Two of them have the same LastName.

If I leave the E.MAT_EMP selection as it is, it works fine and 15 emplo

Answer 1

At the final query on SELECT statement specify columns' name that you want to show: [N°], [LastName], [FirstName] because the * indicates that you want to show all the columns that you have select previously.