MySQL

MySQL provides the Yum Warehouse installation method for the following Linux platformsEl5,el6,el7 (Enterprise Linux 5,6,7)Fedora22,fedora23Make sure that no other third-party release RPM packages are installed in the system to install MySQLMySQL

One: configuration file read location, different system my.cnf configuration file location .For example, Debian location:/etc/mysql/my.cnf found mysqld binaries: Find/-name mysqld /usr/bin/mysqld--verbose--help | grep- A 1 "Default Options"Two:

#!/bin/sh# chkconfig:2345 21 60# Description:start MySQL and stop MySQL scripts.#filename: mydb_start.sh#date: 2015-12-13#linuxzkq#version: v1.0Pidfile= "/application/data/mysql/test-d.pid"Mysql_path= "/application/mysql"Datadir=

System: CentOS 5.5 32-bit systemFirst, uninstall1. Find out if MySQL was previously installed[[email protected] mysql]# rpm-qa|grep-i

Currently, Haproxy has been used to load balance the MSSQL read library, which runs well in the production environment.However, this scenario has drawbacks: the client needs to choose whether to use a read library or a write library. This is still

Although the storage engine in MySQL is not just the MyISAM and the InnoDB two, it is often the two of them. There may be a webmaster did not pay attention to the MySQL storage engine, in fact, the storage engine is a major point in database design,

Recently in the study of MySQL, encountered a MySQL stop fail problem, here the problem encountered and the process of writing out, not how difficult this problem, but I did not find a valid solution to the problem in the process of Chinese web page,

---restore content starts---0x01The order in which the configuration files are read when MySQL startsDefault options is read from the following files in the given order:/ETC/MYSQL/MY.CNF/ETC/MY.CNF ~/.my.cnfHow to use the configuration file1. It

First, the phenomenon of faultUsing scripts:#!/bin/bashdeclare-a arrarr= ($ (echo "show slave status\g" |/usr/local/mysql/bin/mysql-uroot-pddfour_123 | grep-e ' Run Ning| Error ' | awk ' {print $} ')) if [${arr[0]} = = ' No '-o ${arr[1]} = = ' no '];

The page is UTF8, the database is also UTF8, but the result of the query is garbled, the error appears in PHP and the database connection place.The default seems to be the result set to Lant1 code to PHP, natural garbled.Open the database

MySQL root can not reset password (improper operation caused)/etc/my.cnf added Skip-grant-tables in safe mode password-free login no problem (MySQL library is in), and then reset the password in MySQL after the exit, will just in/etc/ MY.CNF

In SQL, a noun trigger refers to a program code that executes automatically in a database in response to certain events in a particular table. "(Wikipedia) is simpler to say, it is a piece of code that is automatically activated when a particular

Official website: https://www.percona.com/doc/percona-toolkit/2.1/pt-table-checksum.html#dsn-optionsEnvironmentMaster: 10.50.12.33From: 10.50.12.35Simulation **************************************** of master-slave difference phenomenonMain:mysql>

A brief tutorial on Sorting MySQL query results by value, How can I sort MySQL query results? This is a question raised by many people. The following describes how to sort MySQL query results by a certain value. If you are interested, take a

In Windows 7, how does one use MySQL on the command line, The MySQL version I installed under Win7 is a mysql-5.0.22-win32 1. Install MySQL in Windows 7. For details about the installation method, refer to: Install MySql 5.5.21 in Windows 7. 2. Add

In-depth analysis of semi-synchronous and asynchronous MySQL master-slave replication configurations, In short, MySQL master-slave replication is a C/S architecture application. The master can be considered as the server in the general sense, and

MySQL describes the basic process of copying database data, Copy Replication is the process of copying data from one MySQL Server (master) to another or multiple MySQL servers (slaves. replication is performed asynchronously. The Server Load

Basic tutorial on using join statements in MySQL and the impact of fields on Performance, Basic use of join statements SQL (MySQL) JOIN is used to obtain data from these tables based on the relationship between fields in two or more tables. JOIN is

Install and use Percona XtraBackup to back up and restore MySQL, 1. Install XtraBackup Yum installation method: Automatic $ rpm -Uhv http://www.percona.com/downloads/percona-release/percona-release-0.0-1.x86_64.rpm Then you will see: Retrieving http:

The instance tutorial for starting and using common query logs in MySQL is as follows, Enable General log queryGenerally, general query logs are not enabled for performance purposes. Slow log can locate SQL statements with performance problems,