MYSQL日期 字符串 时间戳互转 喜欢ヅ旅行 2022-06-05 04:38 297阅读 0赞 常用的时间、字符串、时间戳之间的互相转换,虽然常用但是几乎每次使用时候都喜欢去搜索一下用法;本文将作为一个笔记,整理一下三者之间的 转换(即:date转字符串、date转时间戳、字符串转date、字符串转时间戳、时间戳转date,时间戳转字符串)用法,方便日后查看; 涉及的函数 date\_format(date, format) 函数,MySQL日期格式化函数date\_format() unix\_timestamp() 函数 str\_to\_date(str, format) 函数 from\_unixtime(unix\_timestamp, format) 函数,MySQL时间戳格式化函数from\_unixtime 时间转字符串 select date\_format(now(), '%Y-%m-%d'); \#结果:2016-01-05 时间转时间戳 select unix\_timestamp(now()); \#结果:1452001082 字符串转时间 select str\_to\_date('2016-01-02', '%Y-%m-%d %H'); \#结果:2016-01-02 00:00:00 字符串转时间戳 select unix\_timestamp('2016-01-02'); \#结果:1451664000 时间戳转时间 select from\_unixtime(1451997924); \#结果:2016-01-05 20:45:24 时间戳转字符串 select from\_unixtime(1451997924,'%Y-%d'); //结果:2016-01-05 20:45:24 附表 MySQL日期格式化(format)取值范围。 MySQL日期格式化(format)取值范围。 <table style="border:1px solid silver; border-collapse:collapse; word-break:break-word; font-family:Verdana,Arial,Helvetica,sans-serif; font-size:13px"> <tbody> <tr> <th style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333"><br> </span></span></th> <th style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">值</span></span></th> <th style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">含义</span></span></th> </tr> <tr> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">秒</span></span></td> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">%S、%s</span></span></td> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">两位数字形式的秒( 00,01, ..., 59)</span></span></td> </tr> <tr> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">分</span></span></td> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">%I、%i</span></span></td> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">两位数字形式的分( 00,01, ..., 59)</span></span></td> </tr> <tr> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"> <span style="background-color:rgb(255,255,255)"><span style="color:#333333">小时 </span></span></td> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">%H</span></span></td> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">24小时制,两位数形式小时(00,01, ...,23)</span></span></td> </tr> <tr> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">%h</span></span></td> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">12小时制,两位数形式小时(00,01, ...,12)</span></span></td> </tr> <tr> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">%k</span></span></td> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">24小时制,数形式小时(0,1, ...,23)</span></span></td> </tr> <tr> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">%l</span></span></td> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">12小时制,数形式小时(0,1, ...,12)</span></span></td> </tr> <tr> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">%T</span></span></td> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">24小时制,时间形式(HH:mm:ss)</span></span></td> </tr> <tr> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">%r</span></span></td> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333"> 12小时制,时间形式(hh:mm:ss AM 或 PM)</span></span></td> </tr> <tr> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">%p </span></span></td> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">AM上午或PM下午 </span></span></td> </tr> <tr> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"> <span style="background-color:rgb(255,255,255)"><span style="color:#333333"> 周 </span></span></td> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333"> %W</span></span></td> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">一周中每一天的名称(Sunday,Monday, ...,Saturday)</span></span></td> </tr> <tr> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333"> %a</span></span></td> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">一周中每一天名称的缩写(Sun,Mon, ...,Sat) </span></span></td> </tr> <tr> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">%w </span></span></td> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">以数字形式标识周(0=Sunday,1=Monday, ...,6=Saturday) </span></span></td> </tr> <tr> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">%U</span></span></td> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">数字表示周数,星期天为周中第一天</span></span></td> </tr> <tr> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">%u</span></span></td> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">数字表示周数,星期一为周中第一天</span></span></td> </tr> <tr> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"> <span style="background-color:rgb(255,255,255)"><span style="color:#333333">天</span></span></td> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">%d </span></span></td> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">两位数字表示月中天数(01,02, ...,31)</span></span></td> </tr> <tr> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">%e </span></span></td> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333"> 数字表示月中天数(1,2, ...,31)</span></span></td> </tr> <tr> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333"> %D</span></span></td> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">英文后缀表示月中天数(1st,2nd,3rd ...) </span></span></td> </tr> <tr> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333"> %j</span></span></td> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">以三位数字表示年中天数(001,002, ...,366) </span></span></td> </tr> <tr> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"> <span style="background-color:rgb(255,255,255)"><span style="color:#333333">月</span></span></td> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">%M </span></span></td> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">英文月名(January,February, ...,December) </span></span></td> </tr> <tr> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">%b </span></span></td> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">英文缩写月名(Jan,Feb, ...,Dec) </span></span></td> </tr> <tr> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">%m </span></span></td> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">两位数字表示月份(01,02, ...,12)</span></span></td> </tr> <tr> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">%c </span></span></td> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">数字表示月份(1,2, ...,12) </span></span></td> </tr> <tr> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"> <span style="background-color:rgb(255,255,255)"><span style="color:#333333">年</span></span></td> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">%Y </span></span></td> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">四位数字表示的年份(2015,2016...)</span></span></td> </tr> <tr> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">%y </span></span></td> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333"> 两位数字表示的年份(15,16...)</span></span></td> </tr> <tr> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">文字输出 </span></span></td> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">%文字 </span></span></td> <td style="border:1px solid silver; border-collapse:collapse; padding:3px"><span style="background-color:rgb(255,255,255)"><span style="color:#333333">直接输出文字内容</span></span></td> </tr> </tbody> </table>
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