MySQL

Export the data with the mysqldump command and import the data with the MySQL command.Export:Shell>mysqldump-h host-uroot-proot srcdbname (database name) [Tables (table name)] > Data.sqlImport:Shell>mysql-h Host-uroot-proot Destdbname This way, the

My environment: Mysql:mysql-essential-5.1.51-win32JDBC Driver: I've uploaded it to csdn. Previous: http://download.csdn.net/source/3451945jmeter:jmeter-2.4 any version is OK.1. First we have a database that can be tested, of course, there must be

Stored procedure: procedureThe concept is similar to a function, which is to encapsulate a piece of code.When the code is executed, it can be implemented by invoking the stored procedure.In the encapsulated statement body, you can use If/else,

MySQL starting with version 5.5, the compile configuration via./configure has been canceled and replaced by the CMake tool. Therefore, we first need to compile and install the CMake tool in the system source code. Note: Before installing, be sure to

Xtrabackup: Provided by Percona, instead of ibbackup Backup tool. Used to back up its xtradb engine data, XTRADB itself is InnoDB enhanced full compatibility InnoDB, only MyISAM Win Bei, more advanced features support InnoDB.Xtrabackup advanced

Index purposeThe goal of the index is to improve the efficiency of the query, you can analogy dictionary, if you want to check the word "MySQL", we definitely need to locate the letter M, and then find the Y letter from the bottom, and then find the

MySQL optimization--Xudong He650) this.width=650; "src=" http://s5.51cto.com/wyfs02/M01/82/F8/wKioL1dnnZ2BRTIHAABANBXUs0E228.jpg "title=" 123. JPG "alt=" wkiol1dnnz2brtihaabanbxus0e228.jpg "/>MySQL uses memory650) this.width=650; "src="

Use the MYSQL-E parameter to execute various operation statements of various SQL. Instead of running MySQL at the prompt of MySQL, you can manipulate MySQL in the shell.Format:mysql-hhostname-pport-uusername-ppassword-e ""　　#!/bin/bashHostname= "192.

Method 1: Use the Set password command First log in to MySQL.Format:mysql> set password for user name @localhost = password (' new password ');Example:mysql> set password for [email protected] = password (' 123 ');Method 2: Use Mysqladmin Format:

installation Environment/tools　1.Linux (CentOS version)2.mysql-5.6.31-linux-glibc2.5-x86_64.tarInstallation Steps　　1. Download MySQL decompression version (Mysql-5.6.31-linux-glibc2.5-x86_64.tar), http://dev.mysql.com/downloads/mysql/;　　　　　　2. Unzip

Currently in the development of ERP system, the database used is MySQL. Here's how to turn on transactions, and the mechanism for transaction isolation:1. Check the storage engine used by the current database.Show engines;2. Modify the files in the

1. Single Condition query: Select field name from TableName where condition;2, simple multi-criteria query, using && or between and etc.:3, is null and is not NULL query, here to note that NULL is not an empty string not 0:4, in and not in queries

First, the installation of MySQLsudo rpm-ivh http://repo.mysql.com/mysql-community-release-el7-5.noarch.rpm #将其添加到yum库.Mysql-server #安装mysqlSecond, the installation of Nginxsudo yum install epel-release #把ngin添加到yum源上，然后就可以yum安装yum -y install

1, Test table structure:mysql> desc Test_user;+---------+-------------+------+-----+---------+----------------+ | Field | Type | Null | Key | Default | Extra | +---------+-------------+------+-----+---------+----------

MySQL supports setting the session variable and has the ability to use it into the trigger, so you can set the trigger to fail indirectly. The idea is: A session variable is set before execution, and the value of the variable is judged during

I. Preparatory work1. Prepare two servers (computers), access the LAN, make each other ping each other2. Two servers are installed mysql-server-5.1, you must ensure that the MySQL version is consistent3. Assume that server a:192.168.0.2, server b:192

Server-side:Os:centos 6.6 x86_64MySQL version:5.1.73Client:Os:win7 32-bitMySQL client tool: MySQL Workbench 6.3 CEWin7 Client connection CentOS6.6 MySQL database:Steps:One, 1. Ensure that the MySQL database server is installed in the CentOS 6.6 x86_6

Transferred from: http://www.2cto.com/database/201401/273423.htmlI've always felt a lot of trouble installing MySQL under Linux because it was a bit dizzy when it was installed because of a complicated configuration. Today, you need to connect MySQL

Basic Linux mysql operations: linuxmysqlCommand # View versionMysql -- version# Enter the mysql CommandMysql-u root-pmysql-u root @ localhost (no password)# Creating a databaseCreate database [dataname] # delete database drop database [dataname] #

Mysql cache function note, mysqlcache note Mysql cache function analysis:1. The key Generation Principle of the mysql cache function is to generate a unique key based on the select statement according to certain hash rules. The select result