positive

description

Syntax

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

返回x.

example

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

keywords

1. POSITIVE