Is there a way to make a TSQL variable constant?

Question

Is there a way to make a TSQL variable constant?

Answer 1

Since there is no build in support for constants, my solution is very simple.

Since this is not supported:

Declare Constant @supplement int = 240
SELECT price + @supplement
FROM   what_does_it_cost

I would simply convert it to

SELECT price + 240/*CONSTANT:supplement*/
FROM   what_does_it_cost

Obviously, this relies on the whole thing (the value without trailing space and the comment) to be unique. Changing it is possible with a global search and replace.