下载地址：http://pan.baidu.com/s/1eQ3o3Uq 一、安装 1.1、安装MySQL-server-5.6.17-1 1.[root@localhost mysql]# rpm -ivh MySQL-server-5.6.17-1.linux_glibc2.5.i386.rpm Preparing... ########################################### [100%] 1:MySQL-serv
下载地址：http://pan.baidu.com/s/1eQ3o3Uq
一、安装
1.1、安装MySQL-server-5.6.17-1
1.[root@localhost mysql]# rpm -ivh MySQL-server-5.6.17-1.linux_glibc2.5.i386.rpm Preparing... ########################################### [100%] 1:MySQL-server ########################################### [100%] 2014-05-05 17:59:50 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details). 2014-05-05 17:59:50 5727 [Note] InnoDB: Using mutexes to ref count buffer pool pages 2014-05-05 17:59:50 5727 [Note] InnoDB: The InnoDB memory heap is disabled 2014-05-05 17:59:50 5727 [Note] InnoDB: Mutexes and rw_locks use InnoDB's own implementation 2014-05-05 17:59:50 5727 [Note] InnoDB: Compressed tables use zlib 1.2.3 2014-05-05 17:59:50 5727 [Note] InnoDB: Using Linux native AIO 2014-05-05 17:59:50 5727 [Note] InnoDB: Not using CPU crc32 instructions 2014-05-05 17:59:50 5727 [Note] InnoDB: Initializing buffer pool, size = 128.0M 2014-05-05 17:59:50 5727 [Note] InnoDB: Completed initialization of buffer pool 2014-05-05 17:59:50 5727 [Note] InnoDB: The first specified data file ./ibdata1 did not exist: a new database to be created! 2014-05-05 17:59:50 5727 [Note] InnoDB: Setting file ./ibdata1 size to 12 MB 2014-05-05 17:59:50 5727 [Note] InnoDB: Database physically writes the file full: wait... 2014-05-05 17:59:50 5727 [Note] InnoDB: Setting log file ./ib_logfile101 size to 48 MB 2014-05-05 17:59:50 5727 [Note] InnoDB: Setting log file ./ib_logfile1 size to 48 MB 2014-05-05 17:59:51 5727 [Note] InnoDB: Renaming log file ./ib_logfile101 to ./ib_logfile0 2014-05-05 17:59:51 5727 [Warning] InnoDB: New log files created, LSN=45781 2014-05-05 17:59:51 5727 [Note] InnoDB: Doublewrite buffer not found: creating new 2014-05-05 17:59:51 5727 [Note] InnoDB: Doublewrite buffer created 2014-05-05 17:59:51 5727 [Note] InnoDB: 128 rollback segment(s) are active. 2014-05-05 17:59:51 5727 [Warning] InnoDB: Creating foreign key constraint system tables. 2014-05-05 17:59:51 5727 [Note] InnoDB: Foreign key constraint system tables created 2014-05-05 17:59:51 5727 [Note] InnoDB: Creating tablespace and datafile system tables. 2014-05-05 17:59:51 5727 [Note] InnoDB: Tablespace and datafile system tables created. 2014-05-05 17:59:51 5727 [Note] InnoDB: Waiting for purge to start 2014-05-05 17:59:51 5727 [Note] InnoDB: 5.6.17 started; log sequence number 0 A random root password has been set. You will find it in '/root/.mysql_secret'. 2014-05-05 17:59:55 5727 [Note] Binlog end 2014-05-05 17:59:55 5727 [Note] InnoDB: FTS optimize thread exiting. 2014-05-05 17:59:55 5727 [Note] InnoDB: Starting shutdown... 2014-05-05 17:59:56 5727 [Note] InnoDB: Shutdown completed; log sequence number 1625977 2014-05-05 17:59:56 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details). 2014-05-05 17:59:56 5752 [Note] InnoDB: Using mutexes to ref count buffer pool pages 2014-05-05 17:59:56 5752 [Note] InnoDB: The InnoDB memory heap is disabled 2014-05-05 17:59:56 5752 [Note] InnoDB: Mutexes and rw_locks use InnoDB's own implementation 2014-05-05 17:59:56 5752 [Note] InnoDB: Compressed tables use zlib 1.2.3 2014-05-05 17:59:56 5752 [Note] InnoDB: Using Linux native AIO 2014-05-05 17:59:56 5752 [Note] InnoDB: Not using CPU crc32 instructions 2014-05-05 17:59:56 5752 [Note] InnoDB: Initializing buffer pool, size = 128.0M 2014-05-05 17:59:56 5752 [Note] InnoDB: Completed initialization of buffer pool 2014-05-05 17:59:56 5752 [Note] InnoDB: Highest supported file format is Barracuda. 2014-05-05 17:59:56 5752 [Note] InnoDB: 128 rollback segment(s) are active. 2014-05-05 17:59:56 5752 [Note] InnoDB: Waiting for purge to start 2014-05-05 17:59:56 5752 [Note] InnoDB: 5.6.17 started; log sequence number 1625977 2014-05-05 17:59:56 5752 [Note] Binlog end 2014-05-05 17:59:56 5752 [Note] InnoDB: FTS optimize thread exiting. 2014-05-05 17:59:56 5752 [Note] InnoDB: Starting shutdown... 2014-05-05 17:59:58 5752 [Note] InnoDB: Shutdown completed; log sequence number 1625987 A RANDOM PASSWORD HAS BEEN SET FOR THE MySQL root USER ! You will find that password in '/root/.mysql_secret'. You must change that password on your first connect, no other statement but 'SET PASSWORD' will be accepted. See the manual for the semantics of the 'password expired' flag. Also, the account for the anonymous user has been removed. In addition, you can run: /usr/bin/mysql_secure_installation which will also give you the option of removing the test database. This is strongly recommended for production servers. See the manual for more instructions. Please report any problems at http://bugs.mysql.com/ The latest information about MySQL is available on the web at http://www.mysql.com Support MySQL by buying support/licenses at http://shop.mysql.com New default config file was created as /usr/my.cnf and will be used by default by the server when you start it. You may edit this file to change server settings
注意：若是安装 MySQL-server-5.5.37-1.el6.i686.rpm ，该版本较低，可能会报错如下：
[root@localhost mysql]# rpm -ivh MySQL-server-5.5.37-1.el6.i686.rpm
error: Failed dependencies:
libc.so.6(GLIBC_2.12) is needed by MySQL-server-5.5.37-1.el6.i686
libc.so.6(GLIBC_2.7) is needed by MySQL-server-5.5.37-1.el6.i686
rpmlib(FileDigests) <= 4.6.0-1 is needed by MySQL-server-5.5.37-1.el6.i686
rpmlib(PayloadIsXz) <= 5.2-1 is needed by MySQL-server-5.5.37-1.el6.i686
[root@localhost mysql]#
此时，可选择安装高版本mysql，或者安装完所有依赖后，再安装mysql（较繁琐）。
1.2、安装MySQL-client-5.6.17-1.linux_glibc2.5.i386.rpm
[root@localhost mysql]# rpm -ivh MySQL-client-5.6.17-1.linux_glibc2.5.i386.rpm Preparing... ########################################### [100%] 1:MySQL-client ########################################### [100%] [root@localhost mysql]#
1.3、安装MySQL-devel-5.6.17-1.linux_glibc2.5.i386.rpm
[root@localhost mysql]# rpm -ivh MySQL-devel-5.6.17-1.linux_glibc2.5.i386.rpm Preparing... ########################################### [100%] 1:MySQL-devel ########################################### [100%] [root@localhost mysql]#二、测试
通过命令行连接mysql数据库，测试是否安装成功：
输入测试命令如下：
mysql -uroot -p由于mysql安装后，默认密码为空。
上述命令可能导致登陆失败如下：
Warning: Using a password on the command line interface can be insecure. ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)
此时，可尝试如下操作：
先关闭mysql：
service mysql stop接着以安全模式开启mysql进程（若不先关闭，会报mysql进程已存在），
[root@localhost home]# mysqld_safe --skip-grant-tables &mysql -u root [1] 5257 ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2) [root@localhost home]# 140910 13:13:08 mysqld_safe Logging to '/var/lib/mysql/localhost.localdomain.err'. 140910 13:13:08 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
再接着重新打开个终端，登陆mysql，修改相应用户的密码：
root@localhost home]# mysql -uroot -p mysql> use mysql;mysql> update user set password=PASSWORD('root') where User='root'; ----修改用户访问权限： mysql> grant all privileges on *.* to 'root'@'192.168.1.%' identified by 'mysql' with grant option; mysql> flush privileges; mysql> quit;重新登陆：
mysql -uroot -proot 登陆：
--这句话重新设置一次密码！ mysql> SELECT 1;ERROR 1820 (HY000): You must SET PASSWORD before executing this statement mysql> SET PASSWORD = PASSWORD('root'); 解决办法
安装并登录成功。
三、数据库及数据库实例相关配置：
mysql数据库安装完成后，需要创建数据库实例，需要设置实例的编码，否则使用hibernate写数据时，可能报如下错误：
Hibernate:
insert
into
Operlog
(operCon, operIp, operName, operRes, operSql, operTime, operator)
values
(?, ?, ?, ?, ?, ?, ?)
- SQL Error: 1366, SQLState: HY000
- Incorrect string value: '\xE7\x94\xA8\xE6\x88\xB7...' for column 'operCon' at row 1
org.springframework.jdbc.UncategorizedSQLException: Hibernate operation: could not insert: [com.sunlight.apply.entities.Operlog]; uncategorized SQLException for SQL [insert into Operlog (operCon, operIp, operName, operRes, operSql, operTime, operator) values (?, ?, ?, ?, ?, ?, ?)]; SQL state [HY000]; error code [1366]; Incorrect string value: '\xE7\x94\xA8\xE6\x88\xB7...' for column 'operCon' at row 1; nested exception is java.sql.SQLException: Incorrect string value: '\xE7\x94\xA8\xE6\x88\xB7...' for column 'operCon' at row 1
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:83)
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:80)
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:80)
at org.springframework.orm.hibernate3.HibernateAccessor.convertJdbcAccessException(HibernateAccessor.java:424)
at org.springframework.orm.hibernate3.HibernateAccessor.convertHibernateAccessException(HibernateAccessor.java:410)
at org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:424)
at org.springframework.orm.hibernate3.HibernateTemplate.executeWithNativeSession(HibernateTemplate.java:374)
at org.springframework.orm.hibernate3.HibernateTemplate.save(HibernateTemplate.java:694)
at com.sunlight.apply.daoImpl.UserLoginDaoImpl.getUser(UserLoginDaoImpl.java:296)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
at org.springframework.aop.framework.adapter.MethodBeforeAdviceInterceptor.invoke(MethodBeforeAdviceInterceptor.java:50)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:89)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at $Proxy22.getUser(Unknown Source)
at com.sunlight.apply.serviceImpl.UserLoginServiceImpl.login(UserLoginServiceImpl.java:208)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at flex.messaging.services.remoting.adapters.JavaAdapter.invoke(JavaAdapter.java:406)
at flex.messaging.services.RemotingService.serviceMessage(RemotingService.java:183)
at flex.messaging.MessageBroker.routeMessageToService(MessageBroker.java:1417)
at flex.messaging.endpoints.AbstractEndpoint.serviceMessage(AbstractEndpoint.java:878)
at flex.messaging.endpoints.AbstractEndpoint$$FastClassByCGLIB$$1a3ef066.invoke(<generated>)
at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:149)
at org.springframework.aop.framework.Cglib2AopProxy$CglibMethodInvocation.invokeJoinpoint(Cglib2AopProxy.java:700)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
at org.springframework.flex.core.MessageInterceptionAdvice.invoke(MessageInterceptionAdvice.java:66)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.aop.framework.adapter.ThrowsAdviceInterceptor.invoke(ThrowsAdviceInterceptor.java:126)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.aop.framework.Cglib2AopProxy$FixedChainStaticTargetInterceptor.intercept(Cglib2AopProxy.java:582)
at flex.messaging.endpoints.AMFEndpoint$$EnhancerByCGLIB$$7dd536ad.serviceMessage(<generated>)
at flex.messaging.endpoints.amf.MessageBrokerFilter.invoke(MessageBrokerFilter.java:121)
at flex.messaging.endpoints.amf.LegacyFilter.invoke(LegacyFilter.java:158)
at flex.messaging.endpoints.amf.SessionFilter.invoke(SessionFilter.java:49)
at flex.messaging.endpoints.amf.BatchProcessFilter.invoke(BatchProcessFilter.java:67)
at flex.messaging.endpoints.amf.SerializationFilter.invoke(SerializationFilter.java:146)
at flex.messaging.endpoints.BaseHTTPEndpoint.service(BaseHTTPEndpoint.java:274)
at flex.messaging.endpoints.AMFEndpoint$$EnhancerByCGLIB$$7dd536ad.service(<generated>)
at org.springframework.flex.servlet.MessageBrokerHandlerAdapter.handle(MessageBrokerHandlerAdapter.java:101)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:875)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:807)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:571)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:511)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:643)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:861)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:606)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.sql.SQLException: Incorrect string value: '\xE7\x94\xA8\xE6\x88\xB7...' for column 'operCon' at row 1
3.1、设置数据库大小写不敏感：
不敏感：无论大写、小写，只要是同一个字母，都认为一样，敏感相反。
/usr/my.cnf配置文件中[mysqld]节点下属性lower_case_table_names的含义：
设置为0：表名以大写方式存储，比较时也是大小写敏感。
设置为1：表名以小写方式存储，比较时大小写不敏感。
设置为2：表名按照给定字符串存储，比较时按小写方式比较。
windows、Mac OS x中由于文件名大小写不敏感，因次windows、mac osx中不能设置为0
windows中默认为 1
mac os x中默认为2
因此我们在linux中设置1即可。
vi /usr/my.cnf设置后如下：
# For advice on how to change settings please see # http://dev.mysql.com/doc/refman/5.6/en/server-configuration-defaults.html [mysqld] # Remove leading # and set to the amount of RAM for the most important data # cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%. # innodb_buffer_pool_size = 128M # Remove leading # to turn on a very important data integrity option: logging # changes to the binary log between backups. # log_bin # These are commonly set, remove the # and set as required. # basedir = ..... # datadir = ..... # port = ..... # server_id = ..... # socket = ..... # Remove leading # to set options mainly useful for reporting servers. # The server defaults are faster for transactions and fast SELECTs. # Adjust sizes as needed, experiment to find the optimal values. # join_buffer_size = 128M # sort_buffer_size = 2M # read_rnd_buffer_size = 2M sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES lower_case_table_names=1重新启动：
service mysql restart
3.2、建库时指定编码：
建立数据库时指定编码
CREATE DATABASE IF NOT EXISTS my_db default charset utf8 COLLATE utf8_general_ci;
3.3、连接数据库时DBURL设置：
示例：
jdbc.url=jdbc:mysql://localhost:3306/myDbName?useUnicode=true&characterEncoding=UTF-83.4、测试
完成上述三步即可测试插入、查询是否成功与乱码。
数据库相关编码查询（成功的）：
[root@localhost home]# mysql -uroot -proot mysql> use myDbNamemysql> show variables like '%set%' -> ;+---------------------------------------+----------------------------+ | Variable_name | Value | +---------------------------------------+----------------------------+ | auto_increment_offset | 1 | | character_set_client | utf8 | | character_set_connection | utf8 | | character_set_database | utf8 | | character_set_filesystem | binary | | character_set_results | utf8 | | character_set_server | latin1 | | character_set_system | utf8 | | character_sets_dir | /usr/share/mysql/charsets/ | | innodb_monitor_reset | | | innodb_monitor_reset_all | | | optimizer_trace_offset | -1 | | performance_schema_setup_actors_size | 100 | | performance_schema_setup_objects_size | 100 | +---------------------------------------+----------------------------+ 14 rows in set (0.00 sec)
status命令：
mysql> status -------------- mysql Ver 14.14 Distrib 5.6.17, for Linux (i686) using EditLine wrapper Connection id: 2 Current database: myDbName Current user: root@ SSL: Not in use Current pager: stdout Using outfile: '' Using delimiter: ; Server version: 5.6.17 MySQL Community Server (GPL) Protocol version: 10 Connection: Localhost via UNIX socket Server characterset: latin1 Db characterset: utf8 Client characterset: utf8 Conn. characterset: utf8 UNIX socket: /var/lib/mysql/mysql.sock Uptime: 1 hour 19 min 38 sec Threads: 1 Questions: 43 Slow queries: 0 Opens: 76 Flush tables: 1 Open tables: 71 Queries per second avg: 0.008 -------------
四、mysql驱动版本不匹配问题：
在使用sqlyog（mysql驱动版本较低）操作mysql 6所建数据库时，可能会报出如下问题：
Error: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'OPTION SQL_SELECT_LIMIT=DEFAULT' at line 1 SQLState: 42000 ErrorCode: 1064mysql6移除了mysql5中的该项设置，所以有两种方案，一替换为高版本驱动，另一种更换mysql数据库为mysql5或更低版本。
附：查询数据库版本：
mysql> select version(); +-----------+ | version() | +-----------+ | 5.6.17 | +-----------+ 1 row in set (0.00 sec) mysql>
五、如何卸载？
以下为rpm安装方式的mysql的卸载过程：
5.1、查看已经安装的mysql rpm包[root@localhost home]# rpm -qa | grep My MySQL-server-5.6.17-1.linux_glibc2.5 MySQL-client-5.6.17-1.linux_glibc2.5 [root@localhost home]#
5.2、停止mysql服务：
[root@localhost ~]# service mysql stop Shutting down MySQL.. [确定]5.2、删除 已经安装的mysql包 ，不带rpm结尾，为上面命令5.1中查找的结果：
先卸载客户端：
[root@localhost ~]# rpm -e MySQL-client-5.6.17-1.linux_glibc2.5.i386 root@localhost ~]#
接着卸载其他相关包，如mysql开发包：
[root@localhost ~]# rpm -e MySQL-devel-5.6.17-1.linux_glibc2.5 [root@localhost ~]#
最后卸载服务端：
[root@localhost ~]# rpm -e MySQL-server-5.6.17-1.linux_glibc2.5 root@localhost ~]#
有时会出现一些错误或者警告： ... is needed by ... 这说明这个软件被其他软件需要，不能随便卸载 可以用rpm -e --nodeps强制卸载
声明
本文内容由网友自发贡献，版权归原作者所有，本站不承担相应法律责任。如您发现有涉嫌抄袭侵权的内容，请联系admin@php.cn
您什么时候应该使用复合索引与多个单列索引？Apr 11, 2025 am 12:06 AM在数据库优化中，应根据查询需求选择索引策略：1.当查询涉及多个列且条件顺序固定时，使用复合索引；2.当查询涉及多个列但条件顺序不固定时，使用多个单列索引。复合索引适用于优化多列查询，单列索引则适合单列查询。
如何识别和优化MySQL中的慢速查询？ （慢查询日志，performance_schema）Apr 10, 2025 am 09:36 AM要优化MySQL慢查询，需使用slowquerylog和performance_schema：1.启用slowquerylog并设置阈值，记录慢查询；2.利用performance_schema分析查询执行细节，找出性能瓶颈并优化。
MySQL和SQL：开发人员的基本技能Apr 10, 2025 am 09:30 AMMySQL和SQL是开发者必备技能。1.MySQL是开源的关系型数据库管理系统，SQL是用于管理和操作数据库的标准语言。2.MySQL通过高效的数据存储和检索功能支持多种存储引擎，SQL通过简单语句完成复杂数据操作。3.使用示例包括基本查询和高级查询，如按条件过滤和排序。4.常见错误包括语法错误和性能问题，可通过检查SQL语句和使用EXPLAIN命令优化。5.性能优化技巧包括使用索引、避免全表扫描、优化JOIN操作和提升代码可读性。
描述MySQL异步主奴隶复制过程。Apr 10, 2025 am 09:30 AMMySQL异步主从复制通过binlog实现数据同步，提升读性能和高可用性。1)主服务器记录变更到binlog；2)从服务器通过I/O线程读取binlog；3)从服务器的SQL线程应用binlog同步数据。
mysql：简单的概念，用于轻松学习Apr 10, 2025 am 09:29 AMMySQL是一个开源的关系型数据库管理系统。1）创建数据库和表：使用CREATEDATABASE和CREATETABLE命令。2）基本操作：INSERT、UPDATE、DELETE和SELECT。3）高级操作：JOIN、子查询和事务处理。4）调试技巧：检查语法、数据类型和权限。5）优化建议：使用索引、避免SELECT*和使用事务。
MySQL：数据库的用户友好介绍Apr 10, 2025 am 09:27 AMMySQL的安装和基本操作包括：1.下载并安装MySQL，设置根用户密码；2.使用SQL命令创建数据库和表，如CREATEDATABASE和CREATETABLE；3.执行CRUD操作，使用INSERT,SELECT,UPDATE,DELETE命令；4.创建索引和存储过程以优化性能和实现复杂逻辑。通过这些步骤，你可以从零开始构建和管理MySQL数据库。
InnoDB缓冲池如何工作，为什么对性能至关重要？Apr 09, 2025 am 12:12 AMInnoDBBufferPool通过将数据和索引页加载到内存中来提升MySQL数据库的性能。1)数据页加载到BufferPool中，减少磁盘I/O。2)脏页被标记并定期刷新到磁盘。3)LRU算法管理数据页淘汰。4)预读机制提前加载可能需要的数据页。
MySQL：初学者的数据管理易用性Apr 09, 2025 am 12:07 AMMySQL适合初学者使用，因为它安装简单、功能强大且易于管理数据。1.安装和配置简单，适用于多种操作系统。2.支持基本操作如创建数据库和表、插入、查询、更新和删除数据。3.提供高级功能如JOIN操作和子查询。4.可以通过索引、查询优化和分表分区来提升性能。5.支持备份、恢复和安全措施，确保数据的安全和一致性。
热AI工具
Undresser.AI Undress
人工智能驱动的应用程序，用于创建逼真的裸体照片
AI Clothes Remover
用于从照片中去除衣服的在线人工智能工具。
Undress AI Tool
免费脱衣服图片
Clothoff.io
AI脱衣机
AI Hentai Generator
免费生成ai无尽的。
热门文章
R.E.P.O.能量晶体解释及其做什么（黄色晶体）
3 周前By尊渡假赌尊渡假赌尊渡假赌
R.E.P.O.最佳图形设置
3 周前By尊渡假赌尊渡假赌尊渡假赌
刺客信条阴影：贝壳谜语解决方案
2 周前ByDDD
R.E.P.O.如果您听不到任何人，如何修复音频
3 周前By尊渡假赌尊渡假赌尊渡假赌
WWE 2K25：如何解锁Myrise中的所有内容
3 周前By尊渡假赌尊渡假赌尊渡假赌
热工具
MinGW - 适用于 Windows 的极简 GNU
这个项目正在迁移到osdn.net/projects/mingw的过程中，你可以继续在那里关注我们。MinGW：GNU编译器集合（GCC）的本地Windows移植版本，可自由分发的导入库和用于构建本地Windows应用程序的头文件；包括对MSVC运行时的扩展，以支持C99功能。MinGW的所有软件都可以在64位Windows平台上运行。
PhpStorm Mac 版本
最新（2018.2.1 ）专业的PHP集成开发工具
SublimeText3汉化版
中文版，非常好用
SublimeText3 英文版
推荐：为Win版本，支持代码提示！
禅工作室 13.0.1
功能强大的PHP集成开发环境
