https://blog.youkuaiyun.com/mlw2000zh-cnhttps://blog.youkuaiyun.com/https://blog.youkuaiyun.com/mlw2000/article/details/124939695https://blog.youkuaiyun.com/mlw2000/article/details/124939695mlw2000Tue, 24 May 2022 08:30:05 +0800https://blog.youkuaiyun.com/mlw2000/article/details/84086295https://blog.youkuaiyun.com/mlw2000/article/details/84086295mlw2000Mon, 21 Nov 2011 13:31:28 +0800https://blog.youkuaiyun.com/mlw2000/article/details/84086252https://blog.youkuaiyun.com/mlw2000/article/details/84086252mlw2000Mon, 21 Nov 2011 11:57:49 +0800https://blog.youkuaiyun.com/mlw2000/article/details/84082006https://blog.youkuaiyun.com/mlw2000/article/details/84082006mlw2000Mon, 14 Nov 2011 15:17:44 +0800https://blog.youkuaiyun.com/mlw2000/article/details/84082003https://blog.youkuaiyun.com/mlw2000/article/details/84082003mlw2000Mon, 14 Nov 2011 15:15:01 +0800https://blog.youkuaiyun.com/mlw2000/article/details/84006367https://blog.youkuaiyun.com/mlw2000/article/details/84006367mlw2000Tue, 23 Aug 2011 22:12:34 +0800https://blog.youkuaiyun.com/mlw2000/article/details/83942449https://blog.youkuaiyun.com/mlw2000/article/details/83942449mlw2000Wed, 08 Jun 2011 12:09:55 +0800https://blog.youkuaiyun.com/mlw2000/article/details/83940993https://blog.youkuaiyun.com/mlw2000/article/details/83940993mlw2000Sat, 04 Jun 2011 10:26:16 +0800https://blog.youkuaiyun.com/mlw2000/article/details/6270794https://blog.youkuaiyun.com/mlw2000/article/details/6270794mlw2000Wed, 23 Mar 2011 14:06:00 +0800 PREPARE stmt1 FROM 'SELECT SQRT(POW(?,2) + POW(?,2)) AS hypotenuse'; mysql> SET @a = 3; mysql> SET @b = 4; mysql> EXECUTE stmt1 USING @a, @b; +------------+ | hypotenuse | +------------+ | 5 | +------------+ mys]]>https://blog.youkuaiyun.com/mlw2000/article/details/83812858https://blog.youkuaiyun.com/mlw2000/article/details/83812858mlw2000Mon, 17 Jan 2011 13:40:47 +0800https://blog.youkuaiyun.com/mlw2000/article/details/83797247https://blog.youkuaiyun.com/mlw2000/article/details/83797247mlw2000Thu, 16 Dec 2010 11:30:53 +0800https://blog.youkuaiyun.com/mlw2000/article/details/83774154https://blog.youkuaiyun.com/mlw2000/article/details/83774154mlw2000Sat, 04 Dec 2010 12:33:34 +0800https://blog.youkuaiyun.com/mlw2000/article/details/83737877https://blog.youkuaiyun.com/mlw2000/article/details/83737877mlw2000Tue, 26 Oct 2010 23:19:11 +0800https://blog.youkuaiyun.com/mlw2000/article/details/5699272https://blog.youkuaiyun.com/mlw2000/article/details/5699272mlw2000Mon, 28 Jun 2010 14:23:00 +0800Windows时钟大家可能十分熟悉了，Linux时钟在概念上类似Windows时钟显示当前系统时间，但在时钟分类和设置上却和Windows 大相径庭。和Windows不同的是，Linux将时钟分为系统时钟(System Clock)和硬件(Real Time Clock，简称RTC)时钟两种。系统时间是指当前Linux Kernel中的时钟，而硬件时钟则是主板上由电池供电的那个主板硬件时钟，这个时钟可以在BIOS的"Standard BIOS Feture"项中进行设置。

]]>https://blog.youkuaiyun.com/mlw2000/article/details/5699264https://blog.youkuaiyun.com/mlw2000/article/details/5699264mlw2000Mon, 28 Jun 2010 14:18:00 +08001. Local vs. UTC
首先重要的问题是你使用utc还是local time.
UTC(Universal Time Coordinated)=GMT(Greenwich Mean Time)
Local time 是你手表上的时间

传统的POSIX计算机(Solaris,bsd,unix)使用UTC格式
linux可以处理UTC时间和蹩脚的Windows所使用的local time ]]>https://blog.youkuaiyun.com/mlw2000/article/details/5693877https://blog.youkuaiyun.com/mlw2000/article/details/5693877mlw2000Fri, 25 Jun 2010 14:02:00 +08001. 查看字符集
mysql> show variables like 'character%';
+--------------------------+----------------------------+
| Variable_name            | Value                      |
+--------------------------+----------------------------+<]]>https://blog.youkuaiyun.com/mlw2000/article/details/4702816https://blog.youkuaiyun.com/mlw2000/article/details/4702816mlw2000Tue, 20 Oct 2009 11:54:00 +0800https://blog.youkuaiyun.com/mlw2000/article/details/4591245https://blog.youkuaiyun.com/mlw2000/article/details/4591245mlw2000Thu, 24 Sep 2009 22:39:00 +0800https://blog.youkuaiyun.com/mlw2000/article/details/4591212https://blog.youkuaiyun.com/mlw2000/article/details/4591212mlw2000Thu, 24 Sep 2009 22:38:00 +0800https://blog.youkuaiyun.com/mlw2000/article/details/83460634https://blog.youkuaiyun.com/mlw2000/article/details/83460634mlw2000Wed, 16 Sep 2009 00:19:03 +0800