Developers, MySQL column finish, help you easily from installation to entry

author ： Sophomore computer student Xiao Zhou
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The key ：MySQL install 5.7
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Three articles Society MySQL database 【 Basic knowledge of 】
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Hello everyone , I am a little weeks , Zhou qiluo's Zhou , I wrote three pieces of study before the holiday MySQL Series articles , But I didn't talk about the installation configuration , Make up today , Cooperate to form an introductory series , The article will be constantly mended and improved , You can subscribe to study with your favorite friends , If you think the article is well written , Remember that Sanlian supports poor bloggers

1. download MySQL5.7 Compressed package

Click to enter the download page

When the download is complete , Extract

Be careful ： It's better not to have Chinese and spaces in the decompression path

2. uninstall MySQL service

If an error occurs during installation , uninstall MySQL service You can use the following command

sc delete mysql

3. Configure environment variables

Search for environment variable And open

Choose environment variables

Select the system variable , Create a new one

The variable name is MYSQL_HOME , The variable value is installation MYSQL Directory bin Directory on the outer layer of the directory

find Path Variable , Double click Edit

Click New

The value is %MYSQL_HOME%\bin, After that, keep clicking OK OK 了

4. Why configure environment variables ？

Use mysql, It's actually using bin Executable files in directory , If we're not here MySQL Of bin Under the table of contents , You cannot use these executables , however windows If not found in the current directory , There will be more path Find under variable , Use it when you find it , If you cannot find it, you will report an error , therefore , The purpose of configuring environment variables is to allow us to use them in any directory MySQL The executable of

5. establish my.ini file

edit my.ini file , Change the installation directory to your own installation directory , The data directory is added after the installation directory data Catalog .

[client]
port=3306
default-character-set=utf8
[mysqld]
#  Set it to itself MYSQL Installation directory 
basedir=D:\\mysql5.7\
#  Set to MYSQL Data directory for 
datadir=D:\\mysql5.7\data\
port=3306
character_set_server=utf8
#  Skip security checks 
skip-grant-tables

6. mount this database

Search for cmd, And run as administrator

Switch to MySQL Of bin Under the table of contents , Execute the installation command

mysqld -install

7. Initialization data

Finished , Continue initializing the database , Execute the following command ：

mysqld --initialize-insecure --user=mysql

If there is a mistake here , The error information is as follows , Namely my.ini Note that the path of the file starts with a double backslash , Just change it and execute it again

mysqld: Can't create directory 'D: oftware\environment\mysql5.7.38\mysql-5.7.38-winx64\data\' (Errcode: 2 - No such file or directory)

If it works , There is no prompt on the console , But go back to the installation directory , You'll find more data Folder , And this folder has data , Around the 120mb about

8. start-up MySQL

net start mysql

So MYSQL There is no problem with being a service

9. Get into MySQL terminal

mysql -u root -p 

At present root User password is empty , Enter directly without entering the password

10. Change Password

use mysql; 

update user set authentication_string=password(' Your password ') where user='root' and Host='localhost';

11. Refresh permissions and exit

Refresh the permissions

flush privileges;

Log out

quit

12. Turn on permission validation

hold my.ini Skip security check in the configuration file is commented out , You need to enter the password next time you log in

#  Skip security checks 
#skip-grant-tables

13. restart MySQL

net stop mysql
net start mysql

14. Sign in MySQL

15. Perfect flowers

perfect , Installation and configuration of database , With the basic knowledge of the column , Query details , Advanced learning , I believe you can get started easily MySQL, And with the hand cooked , Understand some of the underlying and move towards the underlying database and tuning , Come on! , juvenile , I am a little weeks , Zhou qiluo's Zhou , If you think the article is well written , Remember that Sanlian supports poor bloggers ️