repair table

The showprocesslist command is very practical. Sometimes mysql runs to more than 50% or more, you need to use this command to check which SQL statement occupies more resources, and you will know which website program is faulty. The show processlist

MySQL database performance optimization is the main core of this article, from database optimization design to specific operations. Good optimization can greatly improve the server performance. I hope this article will help you. 1. MySQL performance

1. You can create an index in the CREATETABLE statement, or use CREATEINDEX or ALTERTABLE to add an index to the table. The following command statement shows how to create a primary key INDEX (PRIMARYKEY), a Union INDEX (UNIQUE), and a general INDEX

This article describes how MySQL responds to Disk Full errors (for example, no space available on the device) and how to respond to over-quota errors (for example, writing failure or user blocking failure ). This article describes how to write data

In windows, mysql may encounter the prompt "Incorrectkeyfilefortable: trytoreeffecrit". Common Causes of mysql table destruction: 1. Data File Corruption caused by sudden server power failure. 2. Force Shutdown without shutting down the mysql

This blog post aims to read and understand your own books and use this picture to explain. If there are any mistakes, I hope you can correct them and share them with us for the purpose of mutual discussion. First, let's introduce the source of this

Learning points:1. Web Database Overview2. MySQL operations3. MySQL common functions4. SQL statement details5. phpMyadmin   1. Web Database Overview Now, we are familiar with the basic knowledge of PHP. This is the chapter about leaving PHP for the

MySQL database server optimization details I recently checked some information about MySql Optimization on the Internet, and completed some tuning settings in accordance with the MySql manual, but because the time is not busy, before you can

The cause of the above error is: The data table. fspolicyiecs_stats is marked as damaged and can be used only after being repaired. You can use mysql mysqlcheck command to quickly fix the use of mysqlcheck-A-o-rDatabase_NAME-p For more details,

The following articles mainly introduce the differences between the MySQL storage engine (InnoDB) and MyISAM, including evaluation, evaluation, and related performance tests, the following is a detailed description of the article, hoping to help you

This article mainly summarizes the MySQL index operation methods, including creating indexes, rebuilding indexes, querying indexes, and deleting indexes. In the following example, 'table _ name' indicates the data table name, 'index _ name'

View the mysql process -- show processlist: Use show processlist to view the current running status. Mysql> show processlist; www.2cto.com, displays the IP address and port number from which the current process is sent. The db column shows which

Today, a company website suddenly prompts the error MySQLErrorDuplicateentry96624forkey1. After analysis, this problem is caused by an id auto-increment field in the mysql table. Today, a website of the company suddenly prompts a MySQL Error

MySQL full-text searchUp to 3.23.23, MySQL began to support full-text indexing and searching. Full-text index is a FULLTEXT index in MySQL. FULLTEXT indexes are used for MyISAM tables. You can use alter table or create index to CREATE them on CHAR,

Solution to the unrecoverable increase in the number of mysql connections in Question: the mysql connection on www.2cto.com has exceeded the limit, and the website basically cannot be moved, after analyzing the traffic, we found that it was not

  It is estimated that there are more than a hundred yuan to see. I always have to explain the background first. A few days ago, the website suddenly failed to be accessed, and there was no content except the framework on the page. The following

MYSQL Data Table Damage Cause Analysis and Repair Methods Summary, met friends can refer to, below to sort out some more comprehensive, hope to help everyone. MYSQL Data Table Damage Cause Analysis and Repair Methods Summary, met friends can refer

Mysql tutorial database tutorial backup and mysql Restoration 1. mysqldump1.1 backupMysqldump adopts an SQL-level backup mechanism. It imports data tables into SQL script files and is suitable for upgrading between different MySQL versions. This is

The first is the fastest, which is used to fix the most common problems, and the last is the slowest, which is used to fix problems that cannot be fixed by other methods.Check and repair MySQL Data FilesIf the above method cannot repair a damaged

The difference between engine = innodb and engine = myisam in mysql is that when MySQL Administrator is used to create a database, the table is of the InnoDB type by default. Later, when using Access2MySQL to export data, I found that only tables of