MySQL

Recently do the site has a station to use the Web page grabber function, when a PHP script in the request URL, the requested page may be very slow, more than the MySQL wait-timeout time, and then when the Web content is captured, ready to insert

Cross-server MySQL access, iptables configuration1> setting MySQL permissions on the machine being accessedGrant all privileges on * * to [e-mail protected] "[IP]" identified by "[Pass]" with GRANT option; Authorization, you can set different

1. Integral typetinyint (m) One byte -128~127smallint (m) 2 bytes -32768~32767Mediumint (M) 3 bytes -8388608~8388607Int (n) 4 bytesBigInt (N) 8 bytesIf unsigned is added, the range value is doubled. such as tinyint unsigned the value range is (0~256)

Recently using Python to do the project with MySQL, some python crawl some of the data into MySQL, but there is a problem, because the data crawled from the outside with ' other irregular data, if you directly call the method of inserting data will

1. To optimize the query, avoid full-table scanning as far as possible, and first consider establishing an index on the columns involved in the Where and order by.2. You should try to avoid null values in the WHERE clause, otherwise it will cause

The CentOS7 Yum source does not seem to have MySQL by default. To solve this problem, we need to download the MySQL repo source first.1. Download the MySQL repo source$ wget http://repo.mysql.com/mysql-community-release-el7-5.noarch.rpm2. Install

Backup and RecoverySystem running, incremental backup and overall backup.For example: Every Sunday, the whole backup once, Monday to Saturday only the day of backup.If there is a problem with the Friday data, it can be recovered in Sunday as a whole

3 Ways to install MySQL # yum Install MySQL Mysql-server # RPM-IVH mysql-client-5.6.23-1.linux_glibc2.5.i386.rpm mysql-server-5.6.23-1.linux_glibc2.5.i386.rpm Install by binary file (couldneed to install CMake gcc gcc-c++

Original works, from the "Blue Blog" blog, Welcome to reprint, please be sure to indicate the following sources, otherwise, the legal responsibility to pursue copyright.Deep Blue Blog:http://blog.csdn.net/huangyanlong/article/details/44085635[[email

Original works, from the "Blue Blog" blog, Welcome to reprint, please be sure to indicate the source, otherwise hold the copyright legal responsibility.Deep Blue Blog:http://blog.csdn.net/huangyanlong/article/details/44086909Set up mysql boot from

MySQL is the client/server structure.MySQL is a client line tool that connects the MYSQLD service, executes SQL commands, and can be considered the client SDKmysqld start the MySQL database service.The script to start the MySQL service command is

Http://www.cnblogs.com/ikodota/p/use_yum_update_mysql.html1. Change root UserSu-# # OR # #sudo-i 2. Install Remi Repository6 # #rpm-UVH http://rpms.famillecollet.com/enterprise/remi-release-6.rpm 3. Check Available MySQL

Log in to the database system:Mysql–h Localhost–u root–pwhere the "-H" parameter refers to the host name of the connection, so here is the connection to the machine, so the following content is localhost;The "-u" parameter indicates the user name,

Tutorial list: http://www.dxzy163.com/view/index7627.html 41 Stored Procedures 40 Full-text indexing and stop words 39 Index of the Tube 38 Index Concepts 37 Database backup and Recovery 36 Transaction syntax 35

First, what is the index?For example, if we want to find a word in the dictionary, how can we find it quickly? That is through the dictionary directory.For a database, the function of an index is to add a directory to the ' data '.Second, the index

1. DownloadFtp://mirror.switch.ch/mirror/mysql/Downloads/MySQL-5.5/mysql-5.5.36.tar.gzftp://mirror.switch.ch/mirror/mysql /downloads/mysql-5.5/mysql-5.5.36.tar.gz.md52. Create MySQL database directory2.1. Create a partitionAdd a piece of hard

About Char,varchar and text usually do not care too much, in general, probably now everyone is using varchar. But when the content to be stored is larger, what is the choice between varchar or text? I don't know......Then went to look up some

1. Install MySQL　　Yum Install mysql-server mysql-devel2. Start MySQL// Start // Restart // Stop grep // view MySQL Service status3. Create a MySQL account' 123 '4. Go to MySQLMysql-uroot-p1235. Create an account from the server used to access the

Install mysql Community version in Centos7 development environment, centos7mysql1. Install mysql on Centos7 The first server to be developed is centos7, and the default database installed above is MariaDB.There is another difference. To install

Mysql is case sensitive. 1. create table name (name VARCHAR (10 )); For this table, the results of the following two queries are the same by default: Copy codeThe Code is as follows:SELECT * from table name where name = 'clip ';SELECT * from table