MySQL - UPDATE query with SET statement dependent on the outcome of the previous SET statement

Question

Here is a tabular representation of what I would like to achieve with an UPDATE statement.

+----+----+---+---+----+----------+---------------+---------------+
|          


        

Answer 1

Just do the calculations independently:

update [EXAMPLE]
set [Calc A] = A - B,
    [Calc B] = (A - B) / D,
    [Calc C] = B / ((A - B) / D)

Answer 2

I actually found a solution to this problem using local variables in the SET statements. See below.

UPDATE [EXAMPLE]
SET [Calc A]    = @calc_a : = A - B
    , [Calc B]  = @calc_b := @calc_a / D
    , [Calc C]  = B / @calc_b