MySQL

First of all, the MySQL service to stop, change the MySQL configuration file My.ini in the database storage master path, the old database storage main path of the database files and folders to the new storage master path, and then restart the

This article mainly introduces the use of phpMyAdmin to modify the MySQL database root user password method, the need for friends can refer to the Click on the "SQL" tab at the top to enter the SQL command input interface. Enter the following

Some MySQL publications have made changes to the structure of the system tables in the MySQL database, adding new permissions or attributes. When you update to the new version of MySQL, you should also update the system tables to ensure that their

the info () function is called before the table scan operation is performed to provide additional information for the optimizer. The information required by the optimizer is not given by the return value, you need to populate the specific

1, install MySQL This should be very simple, and I think everyone in the installation is not too much problem, so it is not much to say, the following we talk about configuration. 2. Configure MySQL Note that under Ubuntu, MySQL defaults to only

See if the event is open The code is as follows Show variables like '%sche% '; To open an event plan The code is as follows Set global Event_scheduler = 1; Create stored Procedure test The code is as follows CREATE PROCEDURE Test () BEGIN

How to solve the problem of MySQL database Chinese: 1.my.ini MySQL configuration file settings [Client] Default-character-set=gbk [Mysqld] Default-character-set=gbk 2. Start the MySQL service create your database 3. Verify current encoding

There are two main reasons for MySQL downtime: 1. Memory is heavily occupied by other processes, or the database itself is too large to cause MySQL downtime2. Program access to MySQL did not perform mysql.close, a large number of resources caused

If you never set the root user password for MySQL, the server does not need a password to connect as root. However, it is recommended that you set a password for each account. If you have previously set the root user password, but have forgotten

　　Q: How to solve the MySQL 5.0.16 garbled problem? 　　A: MySQL 5.0.16 garbled problem can be solved in the following way: 　　1. Set phpMyAdmin Language:chinese Simplified (zh-utf-8) MySQL Character Set: UTF-8 Unicode (UTF8) MySQL Connection

In the project sometimes need to test the performance of the database or just to test the paging effect, if the data inserted, obviously inefficient. The SQL statement to bulk increase is: Insert TableName (name,password) Select Name,password from

Just migrated a project to the newly installed Linux system because it was installed with MySQL: Yum install MySQL Yum Install Mysql-server Then start the MySQL service: Service MYSQD Start This time has been able to log in, but the root user

Install MySQL: Note that some options are not the same as the default, as shown in the figure. Also, if you are reinstalling MySQL, be careful to back up the MySQL directory of the data directory, this directory is the directory of all users, very

Today, in writing the SQL statement, I want to make sure that MySQL is not equal to the operator is the symbol of what the After testing found in MySQL with <> and!= is OK, but SQL Server does not recognize!=, so it is recommended to use <>Selece *

First we can use the following command to clean up the MySQL log: Rm-f/usr/local/mysql/var/mysql-bin.* Then restart your own VPS, if it is LNMP use: /ROOT/LNMP restart This allows us to remove unwanted junk log files, and then if we need to

1, what is the storage engine? Data in MySQL is stored in files (or memory) in a variety of different technologies. Each of these technologies uses different storage mechanisms, indexing techniques, locking levels, and ultimately provides a wide

[Client] #passwd = your_passwd Port = 3306 Socket =/data/mysql/mysql.sock [Mysqld] #global settings Port = 3306 Socket =/data/mysql/mysql.sock Basedir=/usr/local/mysql Tmpdir=/data/mysql Datadir=/data/mysql

Optimization of SELECT * and select fields. Let's start with a test, I have 260,000 records in my test database. Check the number of columns again: SELECT COUNT (*) from Information_schema.columns WHERE table_schema= "Lezhi_data ' and

Are you really frustrated with the actual operation of getting the MySQL database and the table's most basic commands? If this is the case, the following article will give you the corresponding solution, the following article is mainly about the

Specific reasons: The reason for this is that in the MySQL5.0.2 version of the Server SQL Mode, several new sql_mode are added, and in the SQL My.ini file Sql-mode The default increase of two of them, one is Strict_trans_tables Is the mode that