mysq

The concat () function can concatenate strings in SQL statements. In mysq, this function can concatenate multiple strings, you can also connect two or more arrays. The following is an example, he can concatenate the string and the queried field into

1. Check whether you should use a MySQL cluster. Reduce the pressure on the data center nodes and process large data volumes. MySQL is distributed and one or more applications correspond to one MySQL database. Share data with the common data of

Method 1: {code ...} method 2: {code ...} I am a beginner, but I still want to ask a question. I thought I did not discuss this case. But recently I found that someone used the second method, internal system, with a low access volume, so there is no

The master-slave synchronization mechanism of MySQL is very convenient to meet the application requirements of high concurrent reading, and brings great convenience to Web development. However, this method has a major drawback: MySQL's

Nearly half a year after Sun's acquisition, what impact does Sun have on the open-source world? The founder of MySQL stood up to answer questions. When Sun acquired MySQL, an open-source database vendor, for $1 billion at the beginning of this year,

Therefore, I wrote this configuration document specially and believe that you will succeed by following the steps below. I hope you will correct the error.In this example, under wiondws XPPhp5.2.1

This article mainly shares with you the requirements on the environment and the installation of the MySQL database for secure applications. The following is a detailed description of these problems, I hope it will help you with the Secure

The following article describes how to implement MySQL to support Chinese characters. We all know that the default Character Set of the MySQL database that comes with the system is not gbk, therefore, it brings great inconvenience to the development

The following articles mainly introduce the practical operation solutions that allow MySQL to support Chinese characters. MySQL to support Chinese characters is also favored to some extent as MySQL databases are generated, the following is a

In the previous blog, I spoke about the use of powerDNS. Today, I want to talk about the configuration and usage of mydns. There are many mydns configurations on the Internet, but the web management of myconfig will be explained later in the editor).

It is very important to specify the encoding when creating a mysql database. Many developers use the default encoding, but from my experience, coding databases can avoid garbled characters caused by import and export. It is very important to specify

High Availability of MySQL: Keepalived + MySQL (dual-master hot standby) High Availability of MySQL: Keepalived + MySQL (dual-master hot standby) Environment Description:OS: CentOS6.5 _ X64MASTER: 192.168.0.202BACKUP: 192.168.0.203VIP: 192.168.0

PHP classic interview questions and php classic questions This article analyzes in detail the typical PHP interview questions. Share it with you for your reference. The details are as follows: I did some php questions on the Internet, but I don't

The following articles mainly introduce some practical solutions for MySQL installation errors. MySQL installation is often encountered in actual operations, so how can we solve the Errors generated during the installation process? The following

How to completely delete mysql from Centos 1. MySQL installed in yum Mode $ Yum remove mysql-server mysql-libs compat-mysql51 $ Rm-rf/var/lib/mysq $ Rm/etc/my. cnf Check whether there is any mysql software: $ Rpm-qa | grep mysql If yes, continue to

Directory preparation running environment confirm your installation Version Download MySQL install MySQL prepare installation environment compile and install configuration MySQL Single Instance configuration method Directory preparation running

MySQL Local Area Network Backup Using Centos7 Database Backup is an important step. For online systems, databases without backups are insecure. This blog post provides a full backup, Incremental backup, and local area network (LAN) Scheduled backup

There are many friends who use the mysql database server, and we often encounter mysql process CPU usage of 100%. Below I will summarize some solutions. There are many friends who use the mysql database server, and we often encounter mysql process

The following articles mainly describe the MySQL view, including the overview of MySQ view L and the specific description of creating MySQL view-create view and modifying MySQL view-alter view, the following describes the specific content of the

Mac OS X has built-in Apache and PHP, which makes it easy to use. This article takes Mac OS X 10.6.3 as an example. The main contents include:Launch ApacheRunning PHPInstall MySQLUsing phpMyAdminConfiguring PHP's MCrypt Extension librarySet up a