MySQL

Record it by yourself to make a better impression. The English documents are from the official MySQL documents. The Chinese is translated by yourself according to your understanding. Select... lock in share mode sets a Shared Mode Lock on the

The single-host, single-MySQL server processes database connection requests using the multi-thread mechanism, but it has functional bottlenecks just like any processing method. How can a single MySQL server process thousands of transient database

To install MySQL, run the following command at a terminal prompt: Sudo apt-Get install mysql-Server Sudo apt-Get install mysql-Client Sudo apt-Get install php5-mysql // The installation php5-mysql is to connect PHP to MySQL Once the installation

2. Modify the character set of databases and tablesAlter database maildb default Character Set utf8; // modify the character set of the databaseAlter table mailtable default Character Set utf8; // modify the character set of the tableIf you want to

ArticleDirectory 1. First, log on to the MySQL Command Console 2. Select a data table 3. Add a connection user account in the MySQL user table: 4. Data Table Access Authorization 5. Authorization to take effect. creation is

Install PHP 5.3.5 + MySQL 5.1.51 + Apache 2.2.17 in win7 Configuration The PHP version I used is the latest, php5.3.5. You can download the latest version from here. For the installation of MySQL and Apache, we have already illustrated the preceding

There are two cases,1. Start multiple ports in the same version2Start multiple ports in different versions It is easy to start multiple ports in the same version./Usr/local/webserver/MySQL/bin/mysqld_safe-- Defaults-file =/var/mysql3306/My. CNF

The Latin character set is used in the MySQL database. Therefore, Chinese characters cannot be normally supported. Chinese characters are garbled "?" in the database. . To enable MySQL to use Chinese characters normally, especially when using JSP to

Recently, when learning Drupal, the environment required before installation is PHP + MySQL + Apache, but the corresponding installation of MySQL has encountered the apply security settings error during installation, after a long period of

To MySQLStore images in 1 IntroductionWhen designing a database for development, it is inevitable to insert images or audio files into the database. In general, we can insert the corresponding storage location of the image file, instead of the file

Because the project database is to be transferred to MySQL, it took me an hour to understand the usage of Python-mysql. The following is a summary: #-*-coding: UTF-8-*-import mysqldb as mdbimport sys # Set con to global connection con = MDB. connect

$ Linkid = mysql_connect ('localhost: 100', 'root ',*******); Mysql_select_db ('web _ his ', $ linkid ); Mysql_query ("set names utf8 "); /* Create a transaction */ Mysql_query ('start transaction') or exit (mysql_error ()); $ Ssql1 = "insert

The "load data local infile" statement of MySQL usually imports the content of a text file into the database,This speed will be very fast, but today, if the text size exceeds 1 MB, an exception occurs: "packets larger than max_allowed_packet are not

Installation environment: OS: Windows XP RUBY: ruby1.9.1 MySQL: mysql5.1.46 (username/password: Root/root port: 3306) Ruby-MySQL DRIVER: mysql-2.8.1-x86-mswin32.gem (Note: drivers of version 2.7.3 will appear during testing.Require "MySQL", the

Sun has released the latest version of MySQL for the first time since the acquisition of MySQL in May. The latest version of MySQL 5.1 will be released this quarter, but sun does not disclose the specific day. But they released an RC version that is

1. Try to retrieve the desired field. Do not select * from table like this The more data you get, the more data you transmit over the network, which is a waste of bandwidth and network buffer. Especially in order, the performance is even worse .,

After using WordPress for such a long time, I occasionally remember to back up the data. The last time I used wp xml, I configured my machine's Environment basically the same as that of the host provider, there was a MySQL database packaging and

View MySQL Encoding mysql> show variables like 'character%'; +--------------------------+----------------------------+| Variable_name | Value |+--------------------------+--------------------------

Database transactions 1Begin 2 Write BINLOG Buffer 3 commit 4. Return to client 5 BINLOG buffer Flushing 6 BINLOG dump data What is the order of the above six events? MySQL has many system variables that can be set. Different system variables may

1. view the earliest BINLOG file number of MySQL. mysql> show binlog events limit 10;+------------------+-----+-------------+-----------+-------------+----------------------------------------------------------------------+| Log_name | Pos |