FROM_UNIXTIME

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

其余 string_format 格式是非法的，返回 NULL

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

mysql> select from_unixtime(1196440219);
+---------------------------+
| from_unixtime(1196440219) |
+---------------------------+
| 2007-12-01 00:30:19       |
+---------------------------+

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

mysql> select from_unixtime(1196440219, '%Y-%m-%d');
+-----------------------------------------+
| from_unixtime(1196440219, '%Y-%m-%d') |
+-----------------------------------------+
| 2007-12-01                              |
+-----------------------------------------+

mysql> select from_unixtime(1196440219, '%Y-%m-%d %H:%i:%s');
+--------------------------------------------------+
| from_unixtime(1196440219, '%Y-%m-%d %H:%i:%s') |
+--------------------------------------------------+
| 2007-12-01 00:30:19                              |
+--------------------------------------------------+

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

mysql> select from_second(21474836470);
+--------------------------+
| from_second(21474836470) |
+--------------------------+
| 2650-07-06 16:21:10      |
+--------------------------+

keywords

FROM_UNIXTIME,FROM,UNIXTIME