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

默认为 yyyy-MM-dd HH:mm:ss ,也支持date_format中的format格式

传入的是整形,返回的是字符串类型

目前 string_format 支持格式:

%Y:年。例:2014,1900
%m:月。例:12,09
%d:日。例:11,01
%H:时。例:23,01,12
%i:分。例:05,11
%s:秒。例:59,01

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

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                              |
+--------------------------------------------------+

keyword

FROM_UNIXTIME,FROM,UNIXTIME