是的，在MySQL中，您可以按照以下方式进行操作：
SELECT @a:=ABS(40-90) AS column1, @b:=ABS(50-10) AS column2, @c:=ABS(100-40) AS column3, @a+@b+@c as columnTotal;
+---------+---------+---------+-------------+| column1 | column2 | column3 | columnTotal |+---------+---------+---------+-------------+| 50 | 40 | 60 | 150 |+---------+---------+---------+-------------+1 row in set (0.00 sec)
