from_unixtime

description

Syntax

DATETIME FROM_UNIXTIME(INT unix_timestamp[, VARCHAR string_format])

将 unix 时间戳转化为对应的 time 格式，返回的格式由 string_format 指定

支持date_format中的format格式，默认为 %Y-%m-%d %H:%i:%s

传入的是整形，返回的是字符串类型

其余 string_format 格式是非法的，返回NULL

如果给定的时间戳小于 0 或大于 253402271999，则返回 NULL。即时间戳范围是：

1970-01-01 00:00:00 ~ 9999-12-31 23:59:59

example

1. mysql> select from_unixtime(1196440219);
2. +---------------------------+
3. | from_unixtime(1196440219) |
4. +---------------------------+
5. | 2007-12-01 00:30:19       |
6. +---------------------------+

8. mysql> select from_unixtime(1196440219, 'yyyy-MM-dd HH:mm:ss');
9. +--------------------------------------------------+
10. | from_unixtime(1196440219, 'yyyy-MM-dd HH:mm:ss') |
11. +--------------------------------------------------+
12. | 2007-12-01 00:30:19                              |
13. +--------------------------------------------------+

15. mysql> select from_unixtime(1196440219, '%Y-%m-%d');
16. +-----------------------------------------+
17. | from_unixtime(1196440219, '%Y-%m-%d') |
18. +-----------------------------------------+
19. | 2007-12-01                              |
20. +-----------------------------------------+

22. mysql> select from_unixtime(1196440219, '%Y-%m-%d %H:%i:%s');
23. +--------------------------------------------------+
24. | from_unixtime(1196440219, '%Y-%m-%d %H:%i:%s') |
25. +--------------------------------------------------+
26. | 2007-12-01 00:30:19                              |
27. +--------------------------------------------------+

keywords

1. FROM_UNIXTIME,FROM,UNIXTIME