Question

Is it possible to calculate the values of the output columns?

For example, if I have the following

select col1, col2
from table1

Without using a stored procedure, is it possible to do something like this

pseudo code

select col1 as figure1, col2 as figure2, figure2 - figure1
from table1

EDIT 1:

Only reason why I was trying not to do col2 – col1 was because col1 and col2 are created via calculations already, and I didn’t want to double up on the calculations.

Answer 1

You can not use aliases directly. But you can use cte or subquery

;with cte as
(
  select
    col1 as figure1,
    col2 as figure2
  from table1
)
select
  figure1,
  figure2,
  figure2-figure1 as figure3
from cte