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. +---------------------------+
  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. +--------------------------------------------------+

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