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