Summary of regular MySQL analysis and table optimization methods
Periodic Analysis Table
ANALYZE [LOCAL | NO_WRITE_TO_BINLOG] TABLE tbl_name [, tbl_name]
This statement is used to analyze and store the table's keyword distribution. During the
Mysql Data Sorting command AnalyzeTable (index repair) MySQL Optimizer (Optimization Component) needs to collect relevant information when optimizing SQL statements, this includes the cardinality of the table (which can be translated as "hash degree"
Today, when I was experimenting with optimize table, I foundTable Op msg_type msg_textusers.useroptimizeNote /c5> Table does not support optimize, doing recreate + ... users.useroptimizestatus OK Nani doesn't actually support optimize?!. It is
Analyze Table
MySQL's optimizer (optimization component) When optimizing SQL statements, you first need to gather some relevant information, including the cardinality of the table (which can be translated to "hash degree"), which indicates how
The site suddenly appears with the following error:MySQL Error: Duplicate entry ' 1 ' for key ' views 'MySQL Errno: 1062Message: Duplicate entry ' 1 ' for key ' views 'I useMyisamchk Cdb_posts.myi-rFixed the table, but the contents of the table
The Optimizer (Optimization Component) of MySql, the Analyze Table MySQL Command, needs to collect related information when optimizing SQL statements, this includes the cardinality of the table (which can be translated as "hash degree "), it
If you need to maintain the mysql database, refer.
If you need to maintain the mysql database, refer.
Analyze Table
When optimizing SQL statements, MySQL Optimizer must first collect related information, including the cardinality of the table
I. Summary of the causes of MyISAM Table Corruption in MySQL:
1. The data file is damaged due to a sudden power failure on the server. The MySQL service is forcibly shut down without being shut down first. The mysqld process is killed when writing a
Mysql common Maintenance Command bitsCN.com
Analyze Table
When optimizing SQL statements, MySQL Optimizer must first collect related information, including the cardinality of the table (which can be translated as "hash degree "), it indicates the
Reference: linuxfun. me? For those who have used MySQL in p1263, The MyISAM Table engine is the most frequently used at the beginning. The database of this engine creates three files: Table Structure, table index, and table data space. You can
Analyze table
When optimizing SQL statements, the optimizer of MySQL needs to collect related information, including the cardinality of the table.Hash degree), which indicates the number of different values in the column corresponding to an index -
In many Linux production servers often use the database is MySQL, in the database is a lightweight database, but the use of a long time there are always some problems, the general situation is unable to read the table, at this time we will repair
Here's a more complete answer with regard to InnoDB. It is a bit of a lengthy process and can be worth the effort.Keep in mind that's the /var/lib/mysql/ibdata1 busiest file in the InnoDB infrastructure. It normally houses six types of information:
The following articles mainly describe how to implement simple and practical MySQL database optimization methods, including how to regularly analyze and check tables and how to optimize tables on a regular basis, the following is a description of
Mysql common commands (LinuxWindows)
View database status: service mysqld status
Start Database: service mysqld start
Enter the database: mysql-u root-p123456;
List databases: show databases;
Select database: use databaseName;
List tables:
Basic MySQL command bitsCN.com
Start: net start mySql;Enter: mysql-u root-p/mysql-h localhost-u root-p databaseName;List databases: show databases;Select database: use databaseName;List tables: show tables;Show columns from tableName;Create a
The following articles mainly introduce the most simple and practical Optimization Methods for MySQL databases, including the discussion on Performance of MySQLInnoDB and the performance optimization of MySQL databases. The following describes the
The following articles mainly describe how to implement simple and practical MySQL database optimization methods, including how to regularly analyze and check tables and how to optimize tables on a regular basis, the following is a description of
Common MYSQL commandsStart: net start mySql;Enter: mysql-u root-p/mysql-h localhost-u root-p databaseName;List databases: show databases;Select Database: use databaseName;List tables: show tables;Show columns from tableName;Create a database: source
This article mainly introduces the ThinkPHP permission authentication Auth instance. if you need it, you can refer to the following example code to thoroughly analyze the implementation principles and methods of ThinkPHP permission authentication
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