Ubuntu下配置网络，安装mysql，jdk
sudo apt-get install mysql-server mysql-client
sudo apt-get install sun-java6-jdk(安装出意外，sudo dpkg -P sun-java6-bin，然后重新安装)
sudo vi /etc/network/interfaces 配置网络
auto eth0
iface eth0 inet dhcp(static)
address 192.168.8.108
netmask 255.255.255.0
gateway 192.168.8.1
：x保存
sudo ifconfig eth0 down (up)关闭和启动
sudo /etc/init.d/networking restart
-----------------------------------
远程授权访问msyql
GRANT ALL PRIVILEGES ON *.* TO 'root'@'192.168.8.108' IDENTIFIED BY '' WITH GRANT OPTION ;
etc/mysql/my.cnf注释掉 bind 127.0.0.1
重新启动mysql :sudo /etc/init.d/mysql restart
---------------------------------------------
相关文档：
1.配置名字为myodbc的数据源
2.在stdafx.h中加上
#import "c:\program files\common files\system\ado\msado15.dll" no_namespace rename ("EOF", "adoEOF")
3.在程序初始化的方法中加上
AfxEnableControlContainer();
// 初始化COM,创建ADO连接等操作
AfxOleInit();
4.在合适的地方加上
public:_ConnectionPt ......
-static 13%
--with-client-ldflags=-all-static
--with-mysqld-ldflags=-all-static
静态链接提高13%性能
Unix Socket 7.5%
--with-unix-socket path=/usr/local/mysql/tmp/mysql.sock
使用unix套接字链接提高7.5%性能，所以在windows下mysql性能肯定不如unix下面
--enab ......
1,在window自带的防火墙里的例外添加3306端口，为TCP
2，今天在用远程连接Mysql服务器的数据库，不管怎么弄都是连接不到，错误代码是1130，ERROR 1130: Host 192.168.2.159 is not allowed to connect to this MySQL server
猜想是无法给远程连接的用户权限问题。结果这样子操作mysql库，即可解决。在本机登入mysql后，� ......
查询语句:
SELECT 字段名 from 表名.
排序 order by 要排序的字段名 desc :以倒序查询.
limit 从第几个开始 查找多少个 :查找指定个数.
同时查询多个字段用","隔开.
如查询表里面的所有数据在字段名处填"*".
如只想显示某字段的前几位字符可以使用LEFT函数.
SELECT 字段名,LEFT(字段名,位数),字段名 from 表名.
COU ......
MySQL Cluster
is a technology that enables
clustering of in-memory databases in a shared-nothing system. The
shared-nothing architecture allows the system to work with very
inexpensive hardware, and with a minimum of specific requirements
for hardware or software.
......
