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In order to better optimize MySQL in high concurrency, it is necessary to understand the locking table mechanism when MySQL query is updated.I. OverviewMySQL has three levels of Lock: page level, table level, row level.MyISAM and MemoryStorageThe
MySQL常用指令,java,php程序员,数据库工程师必备。程序员小冰常用资料整理MySQL common commands (for reference)The most common display commands are:1. Display the list of databases.show databases;2. Display the data table in the library:Use MySQL;Show tables;3, display the
MyISAM Data Sheet After you delete the largest numbered record, the number is not reusable. You can use the "auto_increment=n" option to specify a self-increment initial value when building a table. Use the ALTER TABLE TABLE_NAME AUTO_INCREMENT=N
MySQL table sharding Methods: MySQL
I. Let me explain why Table sharding is required.
When a piece of data reaches several millions, it takes more time for you to query the data at a time. If there is a joint query, I think it may die there. The
Mysql Single Table, mysql Single Table maximum number of rows
Create and delete DatabasesBlack window to start the Database Service: net start mysqlDisable Database Service: net stop mysql
Create a databaseUse the keyword create
MySQL has a lot of visual management tools, such as "Mysql-workbench" and "sequel-pro-". Now I am writing mysql Terminal command Operation article, is to strengthen my understanding of MySQL, always better than the use of graphical understanding,
The following articles mainly describe the creation and deletion of MySQL databases, as well as the detailed parsing of indexes and changing actual table statements. If you are also popular with MySQL databases, you can click the following article
1. Full backup and incremental backup 1.1 full-scale backupFull-volume data is all the data in the database, and a full backup is the backup of all the data in the database.Back Up all libraries:mysqldump -uroot -p123456 -S /data/3306/mysql.sock -F -
MySQLStudy-MySQL User and permission management MySQL server uses the MySQL permission table to control user access to the database. the MySQL permission table is stored in the mysql database and initialized by the mysql_install_db script. These
How to configure MySQL database server on CentOS
BitsCN.com accidentally found CentOS Professional Forum, remember: http://www.centospub.com
As a result, the initial learning configuration
This environment:
CentOS system,
Mysql-server (version
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