repair table

MySQL is easy to learn and easy to use, with a wealth of technical documentation, these two factors make it widely used. However, with the rapid development of MySQL, even a MySQL veteran will sometimes marvel at the unexpected features of the

MySQL is easy to learn and easy to use, with a wealth of technical documentation, these two factors make it widely used. However, with the rapid development of MySQL, even a MySQL veteran will sometimes marvel at the unexpected features of the

The statement that modifies the table allows you to change the structure of an existing table by adding columns/partitions, modifying Serde, adding properties to tables and Serde, or renaming tables. Similarly, modifying a partition's statement can

1) 、----the use of cast and convertBoth cast and convert in SQL are expressions used to convert an expression of one data type to another data type.Cast and convert provide similar functionality, except that the syntax is different.Convert is

One, SQL file Import Database1.mysql-u User name-p password2.use database name; If not, build one first.3.source d:\ file name. sql; The file path.4.repair table name, table name, ...; The table can be repaired to prevent errors in the table.5.check

A mature database architecture is not designed to be high availability, high scalability and other features, it is with the increase in user volume, the infrastructure is gradually improved. This blog post mainly on the MySQL database development

MySQL server-side program hierarchy1.1 Connection LayerConnection Agreement: TCPIP socketVerifying connection legitimacyAssigning connection threads to client Services1.2 SQL LayerAnalyticalOptimizationAuthorization FormInquireProvide caching1.3

1. How to log into MySQL databaseMysql-u username-p2. How to turn on/off MySQL serviceService MySQL Start/stop3. Check the status of MySQLService MySQL Status4, how to display a number of all databasesShow databases5. How to get the names and types

Grant all on Databasename.tablename to ' username ' @ ' xxx.xxx.xxx.xxx ' identified by ' Complexpassword ';Grant all on discuz.* to ' username ' @ ' xxx.xxx.xxx.% ' identified by ' Complexpassword ';Grant all on discuz.* to ' username ' @ '% ' of '

ObjectiveIn MySQL daily development or maintenance, there are some problems or failures are often difficult to avoid, such as lost passwords, table corruption. Summarize the common questions here for future needs.Forget the root password of

[Client]Port = 3306 #端口号Socket =/ryzc/mysql/data/mysql.sock #sock文件路径[Mysqld]Port = 3306Socket =/ryzc/mysql/data/mysql.sock # server-side sock file pathPid-file =/ryzc/mysql/data/localhost.pid # PID file storage pathDataDir =/ryzc/mysql/data # data

A mature database architecture is not designed to be high availability, high scalability and other features, it is with the increase in user volume, the infrastructure is gradually improved. This blog post mainly on the MySQL database development

Add Create library, tableCheck which tables are available, which librariesDeleting a library Deletes a tableChange table DataMySQL login mysql-uroot-p (with password)Most of the MySQL commands are with;Add Create (da1 library name ta1 table

Change to: http://lizhenliang.blog.51cto.com/7876557/16574651. database table Design to avoid slow query, inefficient query statements, not properly indexed, database congestion (deadlock), etc.2. Database deploymentProject initial visits are not

[Client]port= 3306Socket=/home/MySQL/MySQL/tmp/MySQL.Sock[mysqld]!include/home/MySQL/MySQL/etc/mysqld.cnf#contains the configuration file, the user name, the password file stored separatelyPort=

A mature database architecture is not designed to be high availability, high scalability and other features, it is with the increase in user volume, the infrastructure is gradually improved. This blog post mainly on the MySQL database development

Requirements: Asset repair table in the same asset may be repaired to continue to apply for maintenance, this time the maintenance status needs to determine the maintenance status according to the most recent repair times, so duplicate data under

Forgot MySQL Password:Edit the MySQL Master profile my.cnf add parameters under the [mysqld] field skip-grantRestart the database service so that you can access the database without authorization Mysql-urootModify the corresponding user password use

1. How to log in to MySQL databaseMysql-u username-p2. How to turn on/off MySQL serviceService MySQL Start/stop3. Check the status of MySQLService MySQL Status4, how to display the number of all databasesShow databases5. How to get the names and

MySQL is easy to learn and easy to use, with a wealth of technical documentation, these two factors make it widely used. However, as MySQL grows faster, even a MySQL veteran will sometimes sigh at the unexpected features of the software. This