花了1天,在Debian Etch Linux上成功安装了MySQL 5.0.27 icc版本,并使用JDBC测试中文成功!
中文问题的关键是全部使用UTF-8编码,MySQL 5发布版支持UTF-8,但默认为latin1,Java在内部使用的全部是Unicode,因此要保证JSP页面以UTF-8编码,JDBC驱动采用官方Connector4J 5.0.4,在Resin 3.1/Spring 2.0/Hibernate 3.2环境下测试中文正常。
◆1. 下载"mysql-standard-5.0.27-linux-i686-icc-glibc23.tar.gz",推荐ICC版本,据称比GCC性能提高10-20%
◆2. 复制到/usr/local/,解压:tar zxvf mysql-standard-5.x....tar.gz
◆3. 添加用户和组mysql:
groupadd mysql
useradd -g mysql mysql
◆4. 创建符号连接:/usr/local # ln -s mysql-standard-5.x...
◆5. cd mysql,当前目录改为/usr/local/mysql/
◆6. 运行脚步初始化数据库:./scripts/mysql_install_db --user=mysqle
◆7. 设置权限:
/usr/local/mysql # chown -R root .
/usr/local/mysql # chown -R mysql data
/usr/local/mysql # chgrp -R mysql
◆8. 根据需要创建并修改/etc/my.cnf,参考配置:
[mysqld]
# 设置默认为INNODB表,支持事务:
default-storage-engine=INNODB
# 设置默认的字符集UTF-8:
character-set-server=utf8
collation-server=utf8_general_ci
default-character-set=utf8
# 禁用bdb:
skip-bdb
◆9. 启动MySQL:
/usr/local/mysql/bin # ./mysqld_safe --user=mysql &
◆10. 初始化root口令:
/usr/local/mysql/bin # ./mysqladmin -u root -p password "password-of-root"
Enter password:
◆11. 以root登录创建数据库:
/usr/local/mysql # ./mysql -u root -p
Enter password: password-of-root
◆12. 创建一个新用户:
mysql> create user test identified by 'test-password';
◆13. 创建一个新数据库:
mysql> create database testdb default character set utf8 default collate utf8_general_ci;
务必指定字符集和排序方式,均为UTF-8,这样才能保证创建的表也使用UTF-8。
◆14. 赋予test用户从localhost访问testdb的权限,并使用口令:
mysql> grant all on testdb.* to test@localhost identified by 'test-password';
注意:要使用JDBC从远程连接MySQL,就必须正确设置test用户权限,MySQL的访问权限由用户名,客户端机器名和口令共同组成,上例表示仅允许test用户在本机(localhost)通过口令连接MySQL。
◆15. 停止MySQL服务器:
/usr/local/mysql/bin # ./mysqladmin -u root -p shutdown
Enter password: password-of-root
STOPPING server from pid file /usr/local/mysql/data/debian.pid
xxx mysqld ended
中文秘籍:eUD中国教程在线
/etc/my.cnf中所有与编码相关的设置均要设定为UTF-8,参考步骤8。
按以下步骤调试:
mysql> status;
注意characterset相关值,必须保证全部为utf8,否则,修改/etc/my.cnf,参考步骤8。
mysql> show variables like '%char%';
除了character_set_filesystem显示为binary外,其余应该全部显示为utf8,若非utf8,修改/etc/my.cnf,参考步骤8。
mysql> show variables like '%collation%';
显示应该全部为utf8_general_ci,否则,修改/etc/my.cnf,参考步骤8。
mysqlshow -u root -p -i database-name
作用:显示数据库详细信息,如果你没有看到utf8_general_ci,而是latin_swedish_ci,说明数据库编码非UTF-8,中文肯定不正常,删之,然后参考步骤13以UTF-8重新创建数据库

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Compared with other programming languages, MySQL is mainly used to store and manage data, while other languages such as Python, Java, and C are used for logical processing and application development. MySQL is known for its high performance, scalability and cross-platform support, suitable for data management needs, while other languages have advantages in their respective fields such as data analytics, enterprise applications, and system programming.

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MySQL is suitable for beginners to learn database skills. 1. Install MySQL server and client tools. 2. Understand basic SQL queries, such as SELECT. 3. Master data operations: create tables, insert, update, and delete data. 4. Learn advanced skills: subquery and window functions. 5. Debugging and optimization: Check syntax, use indexes, avoid SELECT*, and use LIMIT.

MySQL efficiently manages structured data through table structure and SQL query, and implements inter-table relationships through foreign keys. 1. Define the data format and type when creating a table. 2. Use foreign keys to establish relationships between tables. 3. Improve performance through indexing and query optimization. 4. Regularly backup and monitor databases to ensure data security and performance optimization.

MySQL is an open source relational database management system that is widely used in Web development. Its key features include: 1. Supports multiple storage engines, such as InnoDB and MyISAM, suitable for different scenarios; 2. Provides master-slave replication functions to facilitate load balancing and data backup; 3. Improve query efficiency through query optimization and index use.

SQL is used to interact with MySQL database to realize data addition, deletion, modification, inspection and database design. 1) SQL performs data operations through SELECT, INSERT, UPDATE, DELETE statements; 2) Use CREATE, ALTER, DROP statements for database design and management; 3) Complex queries and data analysis are implemented through SQL to improve business decision-making efficiency.

The basic operations of MySQL include creating databases, tables, and using SQL to perform CRUD operations on data. 1. Create a database: CREATEDATABASEmy_first_db; 2. Create a table: CREATETABLEbooks(idINTAUTO_INCREMENTPRIMARYKEY, titleVARCHAR(100)NOTNULL, authorVARCHAR(100)NOTNULL, published_yearINT); 3. Insert data: INSERTINTObooks(title, author, published_year)VA


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