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mysql From_unixtime及UNIX_TIMESTAMP及DATE_FORMAT日期函数使用说明 - 站长搜索
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mysql From_unixtime及UNIX_TIMESTAMP及DATE_FORMAT日期函数使用说明

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2014-11-27 17:10:54 转载来源: 网络整理/侵权必删

本文为大家讲解的是mysql From_unixtime及UNIX_TIMESTAMP及DATE_FORMAT日期函数的使用方法,感兴趣的同学参考下。 mysql日期函数From_unixtime及UNIX_TIMESTAMP及DATE_FORMAT(后者只能格式化标准日期格式,时间戳的不行) from_unixtime()是MySQL里的时间函数 date为需要处理的参数(该参数是Unix 时间戳),可以是字段名,也可以直接是Unix 时间戳字符串 后面的 '%Y%m%d' 主要是将返回值格式化 例如: mysql>SELECT FROM_UNIXTIME( 1249488000, '%Y%m%d' ) ->20071120 mysql>SELECT FROM_UNIXTIME( 1249488000, '%Y年%m月%d' ) ->2007年11月20 UNIX_TIMESTAMP() 是与之相对正好相反的时间函数 UNIX_TIMESTAMP(), UNIX_TIMESTAMP(

本文为大家讲解的是mysql From_unixtimeUNIX_TIMESTAMPDATE_FORMAT日期函数的使用方法,感兴趣的同学参考下。

mysql日期函数From_unixtime及UNIX_TIMESTAMP及DATE_FORMAT(后者只能格式化标准日期格式,时间戳的不行)
from_unixtime()是MySQL里的时间函数
date为需要处理的参数(该参数是Unix 时间戳),可以是字段名,也可以直接是Unix 时间戳字符串
后面的 '%Y%m%d' 主要是将返回值格式化
例如:
mysql>SELECT FROM_UNIXTIME( 1249488000, '%Y%m%d' )
->20071120
mysql>SELECT FROM_UNIXTIME( 1249488000, '%Y年%m月%d' )
->2007年11月20
UNIX_TIMESTAMP() 是与之相对正好相反的时间函数

UNIX_TIMESTAMP(), UNIX_TIMESTAMP(date)

  若无参数调用,则返回一个 Unix timestamp ('1970-01-01 00:00:00' GMT 之后的秒数) 作为无符号整数。若用date 来调用 UNIX_TIMESTAMP(),它会将参数值以'1970-01-01 00:00:00' GMT后的秒数的形式返回。date 可以是一个 DATE 字符串、一个 DATETIME字符串、一个 TIMESTAMP或一个当地时间的YYMMDD 或YYYMMDD格式的数字。

例如:


mysql> SELECT UNIX_TIMESTAMP() ; (执行使得时间:2009-08-06 10:10:40)
->1249524739
mysql> SELECT UNIX_TIMESTAMP('2009-08-06') ;
->1249488000

SELECT *
FROM `student`
WHERE regTime > UNIX_TIMESTAMP( curdate( ) ) //今天所有学生注册记录。

标签: mysql From unixtime UNIX TIMESTAMP DATE FORMAT 日期 函数


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