MySQL

Start downloadI chose the last DMG format installation package, click Download, will appear let us register login interface, click the bottom of the no thanks,just take I to downloads! directly download can:Download Complete for installationOpen the

(1): see if there is a job database in MySQL(2) change the storage engine of the user table to I myisamBecause of the time in a hurry directly to look at the table on the SQL statement, now look at the topic requirements slowly change itCreate a

Definition and usageThe Date_sub () function subtracts the specified time interval from the date.GrammarDate_sub (Date,interval expr type) The date parameter is a valid day expression. The expr parameter is the time interval that you want to add.The

MySQL backup is generally a full-library backup +binlog log Incremental backupperform a full library in a few days, and perform an incremental backup several hours a day.Binlog LogThis binary log file records all of the database additions and

Build groups, build users:[[email protected] mysql]# Groupadd MySQL[[email protected] mysql]# useradd-g MySQL MySQLUnzip the installer:[Email protected] mysql]# TAR-ZXVF mysql.tar.gz[Email protected] mysql]#

1. Download and unzip the downloaded Noinstall installation package to the specified directory.2. Configure MySQL Database:Add the following two lines to the My-default.ini file in the MySQL installation directory, and more parameters are explained

1. Unzip the MySQL Zip package2. Configure Environment variables3, modify the configuration file My_default.ini add as follows:[Mysqld]Basedir=d:\mysql\mysql Server 5.6 (MySQL directory)Datadir=d:\mysql\mysql Server 5.6\data (MySQL directory \data)4.

1. What is a stored procedureSimply put, is a set of SQL statements, powerful, can implement some more complex logic functions, similar to the Java language method;PS: A stored procedure is a bit like a trigger, a set of SQL sets, but a stored

1. Change root password (similar to other users)Tried to look at some of the online in MySQL database to perform update user set password= ' new password ' where user= ' root ' execution said the field could not be found, guess the previous version

Sub-query:subqueries, which are queries nested within other queries. For example, we have such a few tables, customer tables, order forms, commodity tables, we want to know which customers have bought a product, then we need to check which orders

Check if binary logging is on: Show variables like '%bin% '; if Log-bin show off is not open, do not open the words in/etc/my.cnf in the [mysqld] under Add log-bin= Mysql-bin (where Mysql-bin is the beginning name of the log file and can be

Storage Engine: Different storage engines can bring different functions and performance to the database.View which storage engines are supported by the current database softwareMysql> show engines;In MySQL 5.5 and later versions, the default storage

First step:win+r input cmd, open command Line window input mysql-h 127.0.0.1-u root-pThe second step: to see if there is a database in the example database if there is a backup and then delete, and then create a database, enter the Create databases

The method of creating a user in MySQL is divided into three ways: The method of INSERT user table, the method of create user, and the method of Grant.I. Form of account nameAccount Composition: User name + host (so duplicate user names can appear,

Under Window1. Export the entire databaseMysqldump-u user name-p database name > exported file nameMysqldump-u dbuser-p dbname > Dbname.sql2. Export a tableMysqldump-u user name-P database name Table name > exported file nameMysqldump-u dbuser-p

MySQL 5.7 GA release, that is, from now on 5.7 can be used in the production environment, there are any problems the official will be repaired immediately.MySQL 5.7 Key Features: Better performance: For multi-core CPUs, solid-state drives,

MySQL Add, delete, check, change operation command:First, modify MySQL Database passwordFormat: Mysqladmin-u username-P Old password password new password.Second, viewSee how many databases: Notice the back with S#查看SHOW DATABASES;#查看表USE blog; SHOW

1. Startnet start (stop) MySQLMysql-h Localhost-u Root-p2, the operation of the databaseCreate database name;show databases;Use database name; --Select database usingdrop database name; --Delete Database3, the operation of the data table1). CREATE

Install mysql5.7.17 and rpmmysql5.7.17 using RPM in linux For your reference, the installation method record of mysql5.7 rpm in linux is as follows: Delete old package: # rpm -qa | grep -i mysql# rpm -ev mysql-libs-* --nodeps Install the rpm package:

Introduction to the expression and value selection reference method of innodb_autoinc_lock_mode, innodbstrictmode Prerequisites: percona 5.6, with the transaction isolation level of RR mysql> show create table test_autoinc_lock\G*********************