negative

description

Syntax

1. BIGINT negative(BIGINT x)
2. DOUBLE negative(DOUBLE x)
3. DECIMAL negative(DECIMAL x)

返回-x.

example

1. mysql> SELECT negative(-10);
2. +---------------+
3. | negative(-10) |
4. +---------------+
5. |            10 |
6. +---------------+
7. mysql> SELECT negative(12);
8. +--------------+
9. | negative(12) |
10. +--------------+
11. |          -12 |
12. +--------------+

keywords

1. NEGATIVE