Windows下MySQL重装引起问题的解决
解决了Plugin 'InnoDB' init function returned error问题和error1405那个安全设置密码登陆问题，我个人觉得关键点在于删除C:\Documents and Settings\All Users\Application Data\MySQL\MySQL Server 5.1\目录下的数据文件，当然，我不可能在重现问题求证了，不过看此贴的人可以尝试一下只做此步是否能解决问题，当然还有删除MYSQL安装目录中的残留文件步骤也比较重要
Cite from：http://forums.mysql.com/read.php?22,144428,250105#msg-250105
Re: Plugin 'InnoDB' init function returned error.
Posted by: Richard Lee ()
Date: February 27, 2009 10:21AM
For Windows OS:
OK, I struggled with this for ages. There are various partial fixes that did not fix it for me on the web, but in the end the following worked:
If you've installed it, then uninstall (an earlier version that had been removed could have left crap that is causing an issue, so best to start off clean). Do this as follows:
- Add/Remove Programs and remove MySQL.
- Delete the Programs File/MySQL folder (it gets left behind)
- Delete the data file (where ever you stored it) #:\MySQL DataFiles > This is assuming you have no data to as yet to worry about!!!!
- Run RegEdit and delete all the MySQL Keys (search and F3) and the half a dozen or so CLSIDs that coe up with just a single non-defailt key for MySQL. You can leave ADOBE\ keys that mention it if you have dreamweaver etc. As allways back up you registry first before choppig it!
OK. Now run te install and go through the config wizard until it fails at the start up. Then close it.
Now open up Services and open MySQL properties - I set it to run under the Administrator account rather than System/ANOther to ensure it had permissions.
Next, go to your new MySQL DataFile and delete 'ibdata1'.
Then go to 'C:\Documents and Settings\All Users\Application Data\MySQL\MySQL Server 5.1\data' and delete all tje 'ib_logfile' prefixed files (should be 0 and 1) - useful to notice the .err log here to which is a text file
相关文档：
方法一：建一个拼音表 t_cosler ，存放每个字母开头的第一个汉字的编号和最后一个汉字的编号。
BatchFile code+------+--------+-------+
| f_PY | cBegin | cEnd |
+------+--------+-------+
| A | 45217 | 45252 | & ......
需求1：在一个select 查询集中再次查询
SELECT * from (SELECT field from table) AS alias
需要注意后面的alias，在mysql中，这是必须的
需求2：一个查询集的结果不在另一个查询集中
SELECT feild1 from table1 WHERE feild1 NOT IN (SELECT field2 from table2)
需要注意，应用IN/NOT IN子句时，必须指定查询字段名� ......
设置MySQL数据同步（单向&双向）
由于公司的业务需求，需要网通和电信的数据同步，就做了个MySQL的双向同步，记下过程，以后用得到再翻出来，也贴出来供大家参考。
一、准备服务器
由于MySQL不同版本之间的(二进制日志)binlog格式可能会不一样，因此最好的搭配组合是Master的MySQL版本和Slave的版本相同或者更低，Ma ......
为了让用户不需要自己运行mysql安装程序安装mysql数据库，软件发布时需要打包免安装版本的mysql。从mysql官网上直接下载的免安装版本需要各种配置，如果配置不好，很容易产生各种各样的问题。尤其是错误码为1067的问题，我试验了网上的很多方法都没起作用，最后想了一个最简单的方法：
（1）首先使用安 ......
我们经常会遇到需要表复制的情况，如将一个table1的数据的部分字段复制到table2中，或者将整个table1复制到table2中，这时候我们就要使用SELECT INTO 和 INSERT INTO SELECT 表复制语句了。
1.INSERT INTO SELECT语句
语句形式为：Insert into Table2(field1,field2,...) select value1,v ......
