-

Operator Description

The - operator is used for subtraction operations.

Grammar Structure

> SELECT value1-value2;

> SELECT column1-column2... FROM table_name;

Example

mysql> select 1123.2333-1233.3331;
+---------------------------+
| 1123.2333 - 1233.3331 |
+---------------------------+
| -110.0997999999999999996 |
+---------------------------+
1 row in set (0.00 sec)

create table t2(c1 int, c2 int);
insert into t2 values ​​(-3, 2);
insert into t2 values ​​(1, 2);

mysql> select c1-5 from t2;
+---------+
| c1 - 5 |
+---------+
| -8 |
| -4 |
+---------+
2 rows in set (0.00 sec)

mysql> select c1-c2 from t2;
+-----------+
| c1 - c2 |
+-----------+
| -5 |
| -1 |
+-----------+
2 rows in set (0.01 sec)