CentOS
bitsCN.comcentos编译安装mysql5.5 安装Mysql5.5之前先卸载CentOS自带的Mysql5.0。 [root@localhost ~]# yum remove mysql 编译安装cmake 下载cmake源码包cmake-2.8.4.tar.gz,mv到/usr/local/src目录下 [root@localhost ~]# cd /usr/local/src/ [root@localhost src]# tar xzvf cmake-2.8.4.tar.gz [root@localhost src]# cd cmake-2.8.4 [root@localhost cmake-2.8.4]# ./bootstrap --------------------------------------------- CMake 2.8.4, Copyright 2000-2009 Kitware, Inc. --------------------------------------------- Error when bootstrapping CMake: Cannot find appropriate C compiler on this system. Please specify one using environment variable CC. See cmake_bootstrap.log for compilers attempted. --------------------------------------------- Log of errors: /usr/local/src/cmake-2.8.4/Bootstrap.cmk/cmake_bootstrap.log ---------------------------------------------报错:缺少C的编译器。 安装gcc编译器 可以从Linux系统的安装盘中安装,也可以简单地用yum安装 [root@localhost ~]# yum install gcc 继续cmake的安装 [root@localhost cmake-2.8.4]# ./bootstrap --------------------------------------------- CMake 2.8.4, Copyright 2000-2009 Kitware, Inc. C compiler on this system is: cc --------------------------------------------- Error when bootstrapping CMake: Cannot find appropriate C++ compiler on this system. Please specify one using environment variable CXX. See cmake_bootstrap.log for compilers attempted. --------------------------------------------- Log of errors: /usr/local/src/cmake-2.8.4/Bootstrap.cmk/cmake_bootstrap.log ---------------------------------------------再次报错:缺少C++编译器。 安装gcc-c++编译器 同样可以从Linux系统的安装盘中安装,或者简单地用yum安装 [root@localhost ~]# yum install gcc-c++ 重复上面的操作 [root@localhost cmake-2.8.4]# ./bootstrap 没有报错后,编译安装 [root@localhost cmake-2.8.4]# gmake [root@localhost cmake-2.8.4]# gmake install 开始正式安装Mysql 添加mysql用户和用户组 [root@localhost ~]# groupadd mysql [root@localhost ~]# useradd -g mysql mysql 下载mysql的源码包mysql-5.5.11.tar.gz到/usr/local/src下,解压 [root@localhost ~]# cd /usr/local/src/ [root@localhost src]# tar xzvf mysql-5.5.11.tar.gz [root@localhost src]# cd mysql-5.5.11 cmake运行 [root@localhost mysql-5.5.11]# cmake . 报错: -- Could NOT find Curses (missing: CURSES_LIBRARY CURSES_INCLUDE_PATH) CMake Error at cmake/readline.cmake:82 (MESSAGE): Curses library not found. Please install appropriate package, remove CMakeCache.txt and rerun cmake.On Debian/Ubuntu, package name is libncurses5-dev, on Redhat and derivates it is ncurses-devel. Call Stack (most recent call first): cmake/readline.cmake:126 (FIND_CURSES) cmake/readline.cmake:216 (MYSQL_USE_BUNDLED_LIBEDIT) CMakeLists.txt:250 (MYSQL_CHECK_READLINE) -- Configuring incomplete, errors occurred!
缺少Curses包,解决办法:remove CMakeCache.txt and rerun cmake.On Debian/Ubuntu, package name is libncurses5-dev, on Redhat and derivates it is ncurses-devel.很容易看懂,不解释了... 在CentOS下需要安装ncurses-devel [root@localhost mysql-5.5.11]# yum install ncurses-devel 重新cmake运行[root@localhost mysql-5.5.11]# cmake . 还是有个警告 Warning: Bison executable not found in PATH 有一个警告,也解决了它,缺少Bison就安装一下 [root@localhost mysql-5.5.11]# yum install bison 再次运行,没有报错 [root@localhost mysql-5.5.11]# cmake . 在编译安装前,可以设置安装的配置选项 [root@localhost mysql-5.5.11]# ./configure --help 根据帮助信息选择自己需要设置的选项,当然也可以跳过这步,按默认设置 开始编译安装,时间有点稍长,可以泡杯咖啡转悠一下... [root@localhost mysql-5.5.11]# make && make install完成编译安装 进入安装目录,将程序二进制的所有权改为root,数据目录的说有权改为mysql用户,更新授权表 [root@localhost mysql-5.5.11]# cd /usr/local/mysql/ [root@localhost mysql]# chown -R root . [root@localhost mysql]# chown -R mysql . [root@localhost mysql]# chgrp -R mysql . [root@localhost mysql]# scripts/mysql_install_db --user=mysql 安全启动mysql[root@localhost mysql]# ./bin/mysqld_safe --user=mysql & 关闭mysql[root@localhost mysql]# ./bin/mysqladmin -u root shutdown -p默认密码为空 方便调用,为mysql设置一个软链接[root@localhost ~]# ln -s /usr/local/mysql/bin/mysql /usr/bin/mysql 有3种方法为root账户设置密码: 使用SET PASSWORD语句 [root@localhost ~]# mysql -u rootmysql> SET PASSWORD FOR 'root'@'localhost' = PASSWORD('newpwd'); mysql> SET PASSWORD FOR 'root'@'host_name' = PASSWORD('newpwd')使用mysqladmin命令行程序 [root@localhost ~]# mysqladmin -u root password "newpwd" [root@localhost ~]# mysqladmin -u root -h host_name password "newpwd"使用UPDATE语句 [root@localhost ~]# mysql -u rootmysql> UPDATE mysql.user SET Password = PASSWORD('newpwd') -> WHERE User = 'root'; mysql> FLUSH PRIVILEGES; 其他设置处理: 设置选项文件,将配置文件拷贝到/etc下 [root@localhost mysql]# cp support-files/my-medium.cnf /etc/mysql.cnf 设置开机自启动 [root@localhost mysql]# cp support-files/mysql.server /etc/init.d/mysql [root@localhost mysql]# chmod +x /etc/init.d/mysql 现在可以通过服务来启动和关闭Mysql [root@localhost ~]# service mysql start [root@localhost ~]# service mysql shutdown 基本上的安装就是这样了
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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

The main role of MySQL in web applications is to store and manage data. 1.MySQL efficiently processes user information, product catalogs, transaction records and other data. 2. Through SQL query, developers can extract information from the database to generate dynamic content. 3.MySQL works based on the client-server model to ensure acceptable query speed.

The steps to build a MySQL database include: 1. Create a database and table, 2. Insert data, and 3. Conduct queries. First, use the CREATEDATABASE and CREATETABLE statements to create the database and table, then use the INSERTINTO statement to insert the data, and finally use the SELECT statement to query the data.

MySQL is suitable for beginners because it is easy to use and powerful. 1.MySQL is a relational database, and uses SQL for CRUD operations. 2. It is simple to install and requires the root user password to be configured. 3. Use INSERT, UPDATE, DELETE, and SELECT to perform data operations. 4. ORDERBY, WHERE and JOIN can be used for complex queries. 5. Debugging requires checking the syntax and use EXPLAIN to analyze the query. 6. Optimization suggestions include using indexes, choosing the right data type and good programming habits.


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