Install MySQL from scratch (MySQL installation document - unzipped version)

Installation environment :Win10 64 position Software version :MySQL 5.7.24 Decompression version
MYSQL I have already placed the compressed package of , If the official website is slow to download, you can come to official account Xiao Jin's programming journey reply mysql Get it oh
One 、 download
Click the link below ： https://downloads.mysql.com/archives/community/
Select the version corresponding to the number of digits in your system and click on the right Download, It will go to another page , Also find the position shown below near the bottom of the page ：

Ignore the login and registration buttons above , Just click No thanks, just start my download. You can download .

Two 、 install ( decompression )
After downloading, we get a compressed package , Unzip it , We can get it MySQL 5.7.24 Software ontology ( It's a folder ), We can put it where you want to install it .

3、 ... and 、 To configure

1. Add environment variables
   There are many options in environment variables , Here we only use Path This parameter . Why add environment variables at the beginning of initialization ？ In black box ( namely CMD) Enter the name of an executable program ,Windows Will be in the environment variable first Path Look in the path indicated , If you find it, execute it directly , Not found, just find it in the current working directory , If you haven't found it yet , Just report a mistake . The purpose of adding environment variables is to directly call... In any black box MySQL Instead of always modifying the working directory , Greatly simplified operation .

Right click this computer → attribute , Click Advanced System Settings
Click environment variable

Create a new... In the system variable MYSQL_HOME

Locate and double-click in the system variable Path

Click New

Finally, click OK .

How to verify whether the addition is successful ？

Right click to start menu ( It's the lower left corner of the screen ), Select the command prompt ( Administrators ), Open the black box , Knock in mysql, enter . If you are prompted Can’t connect to MySQL server on 'localhost’ It proves that the addition is successful ; If you are prompted mysql Not an internal or external command , If it is not a runnable program or batch file, it indicates that the addition failed , Please recheck the steps and try again .

2. New configuration file
   Create a new text file , The contents are as follows ：

[mysql]
default-character-set=utf8

[mysqld]
character-set-server=utf8
default-storage-engine=INNODB
sql_mode=STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION

Save the above text file as , Select all files in the save type (.), File name my.ini, The storage path is MySQL Root directory ( For example, mine is D:\software\mysql-5.7.24-winx64, According to their own MySQL Directory location modification ).

The code means that the default code set of the configuration database is utf-8 And the default storage engine is INNODB.
3. initialization MySQL
Knock in the black box just now mysqld --initialize-insecure, enter , Wait a little bit , If there is no error message ( Here's the picture ) Then prove data There is no problem with directory initialization , Check again at this time MySQL There are already data Directory generation .

mysqld --initialize-insecure

tips： If the following error occurs

Due to insufficient permissions , Go to C:\Windows\System32 Run as administrator under cmd.exe


4. register MySQL service
Type in... In the black box mysqld -install, enter .

mysqld -install

Now your computer has been installed MySQL Yes .
MySQL The server
5. start-up MySQL service
Type in... In the black box net start mysql, enter .

net start mysql  //  start-up mysql service 
net stop mysql  //  stop it mysql service 

6. Modify default account password
Type in... In the black box mysqladmin -u root password 1234, there 1234 Default administrator ( namely root Account ) Password , It can be modified to what you like .

mysqladmin -u root password 1234

thus ,MySQL 5.7 The decompressed version has been installed ！

Four 、 Sign in MySQL
Right click to start menu , Select the command prompt , Open the black box . Enter... In the black box ,mysql -uroot -p1234, enter , The following figure appears and the lower left corner is mysql>, Login succeeded .

mysql -uroot -p1234

Here you can start your MySQL On a journey ！
sign out mysql：

exit
quit

Login parameters ：

mysql -u user name  -p password  -h To connect the mysql Server's ip Address ( Default 127.0.0.1) -P Port number ( Default 3306)

5、 ... and 、 uninstall MySQL
If you want to uninstall MySQL, It's also very simple. .
Right click to start menu , Select the command prompt ( Administrators ), Open the black box .
Knock in net stop mysql, enter .

net stop mysql

Then knock in mysqld -remove mysql, enter .

mysqld -remove mysql

Finally delete MySQL Directory and related environment variables .
thus ,MySQL Uninstall completed ！

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