bin

description

Syntax

STRING bin(BIGINT x) 将十进制数x转换为二进制数.

example

1. mysql> select bin(0);
2. +--------+
3. | bin(0) |
4. +--------+
5. | 0      |
6. +--------+
7. mysql> select bin(10);
8. +---------+
9. | bin(10) |
10. +---------+
11. | 1010    |
12. +---------+
13. mysql> select bin(-3);
14. +------------------------------------------------------------------+
15. | bin(-3)                                                          |
16. +------------------------------------------------------------------+
17. | 1111111111111111111111111111111111111111111111111111111111111101 |
18. +------------------------------------------------------------------+

keywords

1. BIN