re use existing selected column in sql server?

Question

Say I have a query that goes like this

select column1
,column2
,column3
,column4
,column5 + reusethiscolumn as Reusethiscolumn2

[can i use here the data that will be derived from the column below?]

,case[computation here] as reusethiscolumn
from table

is there any way to do this? thanks in advance.

Answer 1

select 
column1
,column2
,column3
,column4
,(column5 + reusethiscolumn) as Reusethiscolumn2
from
(
  select 
    column1
   ,column2
   ,column3
   ,column4
   ,column5
   ,case[computation here] as reusethiscolumn
  from table
) AS SubQ