Arithmetic Operators
mysql> mysql> SELECT 2+1; +-----+ | 2+1 | +-----+ | 3 | +-----+ 1 row in set (0.00 sec) mysql> mysql> SELECT 4-2/4; +--------+ | 4-2/4 | +--------+ | 3.5000 | +--------+ 1 row in set (0.00 sec) mysql> mysql> SELECT 4-(2/4); +---------+ | 4-(2/4) | +---------+ | 3.5000 | +---------+ 1 row in set (0.00 sec) mysql>