MySQL installation and configuration

MySQL brief introduction

MySQL The earliest history of the world can be traced back to 1979 year ,Monty Widenius use BASIC Design a report tool , After a while , Use this tool again C Language rewriting , Migration to UNIX platform , At that time, it was just an underlying report oriented storage engine .

1985 year , Three Swedes David Axmark、Allan Larsson and Michael Widenius Set up a company , This is it. MySQLAB The forerunner of , The company didn't originally develop database products , But in the process of realizing the idea, we need a database and hope to use open source products . But at that time, there was no suitable choice . Therefore, I designed a method to access data by using index sequence , That is to say ISAM（Indexed Sequential Access Method） The predecessor of the core algorithm of the storage engine . This software is one of the founders Michael Widenius daughter My Name of .MySQL Of Logo Dolphin logo , As shown in the figure below , Dolphins represent speed 、 power 、 Accuracy, etc MySQL Features owned .Logo The name of Chinese dolphin is "sakila", It is developed by open source software developers from Eswatini, Africa Ambrose Twebaze Provided . according to Ambrose said ,Sakila It comes from a kind of SiSwati The Swaziland dialect of , Also in Ambrose My hometown is Uganda, near Tanzania Arusha The name of a small town in .

MySQL It's a free open source 、 small 、 Relational database management system . With the continuous improvement of the database function 、 Continuous improvement of performance , Increasing reliability .

2000 year 4 month ,MySQL Tidied up the old storage engine , Name it MyISAM.

2001 year , Support transaction processing and row level lock storage engine InnoDB Be integrated into MySQL Distribution in , This version integrates MyISAM And InnoDB Storage engine ,MySQL And InnoDB The official combined version of is 4.0.2004 year 10 month , Released the classic 4.1 edition . 2005 year 10 month , Released a version of the milestone ,MySQL 5.0, stay 5.0 A cursor is added to the , stored procedure , trigger , View and transaction support . stay 5.0 In later versions ,MySQL It clearly shows the development pace towards high-performance database .MySOL The company 2008 year 1 month 16 Number by SUN Company purchase , And in the 2009 year SUN Has been Oracle Acquisition .MySQL Our future is bright .

MySQL Although it's free , But like other commercial databases , It has the versatility of database system , Provides access to data 、 increase 、 modify 、 Delete or more complex data operations . meanwhile MySQL It is a relational database system , Support standard structured query language , meanwhile MySQL Different program interfaces and link libraries are provided for the client , Such as C、C++、Java、PHP etc. . at present MySQL Widely used in Internet Small and medium-sized websites on . Because of its small size 、 Fast 、 Low total cost of ownership , Especially open source , Therefore, many small and medium-sized websites choose to reduce the total cost of ownership of websites MySQL As website database .

MySQL Download and install

download

1. Get into MySQL Official website Official website address , choice Downloads.

 2. Flip down , find MySQL Community (GPL) Downloads », Click to enter .

 

3. choice MySQL Community Server

 

 4. Download the decompressed version

 

 5. The following page will pop up , Choose to download directly without logging in ( The download process may be a little slow )

To configure

1. After downloading , Unzip it into a directory you can find .

2. Run as administrator cmd, And switch to mysql Of bin Catalog .

 

3. Input mysqld --install install mysql service , The command to remove the service is mysqld --remove

4. Input mysqld --initialize --console initialization , Remember the initial password

5. Then input net start mysql Start the service , The stop service command is net stop mysql

6. Finally, log in mysql -uroot -p, The following interface shows that you have successfully logged in

7. Then change the password yourself set password for 'root'@'localhost'=' Your new password '

8. Input quit You can quit mysql Oh

9. For the convenience of login operation MySQL, Set an environment variable , Get into bin Catalog , Then copy the path , Add to system environment variable

MySQL What to do if the password is forgotten ？

1. Open... With administrator privileges cmd, close mysql service

> net stop mysql

2. Set to start mysql Skip permission verification when serving

> mysqld --console --skip-grant-tables --shared-memory

3. Reopen ！ Reopen ！ Reopen a cmd window ( With administrator rights ), Don't close the previous window , Then input mysql, If successful login , As shown in the figure below ：

4. Use the specified database

stay MySQL There are many databases in the system , Before operating the database, you must determine which database it is . Use use Command select database .

> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| sys                |
| text               |
+--------------------+
5 rows in set (0.02 sec)

> use mysql;

 5. Change Password

/*update user set password=password("123456") where user="root";*/
alter user [email protected] identified by '123456';

> mysql -uroot -p

I found the wrong report , Don't panic , Here comes the key ！！

• First update the permissions flush privileges;

• Then execute the password change command alter user [email protected] identified by '123456';

6. sign out mysql

> quit;

7. Close all consoles , Reopen a , restart mysql service , And login .

> net start mysql

> mysql -uroot -p

OK ! Successful connection

install Navicat 15 for MySQL

Navicat 15 for MySQL It's about MySQL Third party for database development MySQL Management tools , The software can be used for MySQL Database server version 3.21 Or above and MariaDB 5.1 Or more . Can connect at the same time MySQL and MariaDB database , And with Amazon RDS、Amazon Aurora、Oracle Cloud、Microsoft Azure、 Alibaba cloud 、 Tencent cloud is compatible with cloud databases such as Huawei cloud , Support seamless data migration 、 ordinary SQL edit 、 Intelligent database design 、 Advanced secure connection and other functions , For database management 、 Development and maintenance provides an intuitive and powerful graphical interface , It's management and development MySQL or MariaDB The ideal solution .

Navicat Connect MySQL

1. stay Navicat New China MySQL Connect

2. Default port 3306, Click the test connection button , Successful connection ！ Finally, click OK

3. Double click the connection name , You can see all databases