from_unixtime

description

Syntax

DATETIME FROM_UNIXTIME(BIGINT 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

传入的是整型,返回的是字符串类型

目前支持的 unix_timestamp 范围为 [0, 32536771199],超出范围的 unix_timestamp 将会得到 NULL

example

  1. mysql> select from_unixtime(1196440219);
  2. +---------------------------+
  3. | from_unixtime(1196440219) |
  4. +---------------------------+
  5. | 2007-12-01 00:30:19 |
  6. +---------------------------+
  7. mysql> select from_unixtime(1196440219, 'yyyy-MM-dd HH:mm:ss');
  8. +--------------------------------------------------+
  9. | from_unixtime(1196440219, 'yyyy-MM-dd HH:mm:ss') |
  10. +--------------------------------------------------+
  11. | 2007-12-01 00:30:19 |
  12. +--------------------------------------------------+
  13. mysql> select from_unixtime(1196440219, '%Y-%m-%d');
  14. +-----------------------------------------+
  15. | from_unixtime(1196440219, '%Y-%m-%d') |
  16. +-----------------------------------------+
  17. | 2007-12-01 |
  18. +-----------------------------------------+
  19. mysql> select from_unixtime(1196440219, '%Y-%m-%d %H:%i:%s');
  20. +--------------------------------------------------+
  21. | from_unixtime(1196440219, '%Y-%m-%d %H:%i:%s') |
  22. +--------------------------------------------------+
  23. | 2007-12-01 00:30:19 |
  24. +--------------------------------------------------+

对于超过范围的时间戳,可以采用from_second函数 DATETIME FROM_SECOND(BIGINT unix_timestamp)

  1. mysql> select from_second(21474836470);
  2. +--------------------------+
  3. | from_second(21474836470) |
  4. +--------------------------+
  5. | 2650-07-06 16:21:10 |
  6. +--------------------------+

keywords

  1. FROM_UNIXTIME,FROM,UNIXTIME