MySQL's free installation and configuration change password

mysql-5.6.17-win32 installation-free version configuration details Step-by-
step reading
tools / raw materials
windows 2003 R2 mysql-5.6.17-win32.zip
method / step
1 to
download mysql-5.6.17-win32; official website download address Baidu
2
unzip to self Define the directory, what I am demonstrating here is D:\wamp\mysql\
3
Copy my-default.ini in the root directory, rename it to my.ini, replace my.ini with the following content #The
following is the copied content, this line can not be copied
[client]
port=3306
default-character-set=utf8 #The
character type of the client is the same as that of the server. It is recommended to use utf8
[mysqld]
port=3306
character_set_server=utf8 #The
character type of the server is recommended to be utf8
basedir=D:\wamp \mysql #Unzip
the root directory
datadir=D:\wamp\mysql\ data #Unzip
the root directory\data
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
[WinMySQLAdmin]
D:\wamp\mysql\bin\mysqld.exe #Unzip 
the root directory\bin\mysqld.exe #The
above is the copied content, this line can not be copied
4
Environment variable configuration
My computer-properties-advanced-environment variables-new
variable MYSQL_HOME Value D:\wamp\mysql
Find the variable path Edit, add ;%MYSQL_HOME%\bin
5
, enter cmd in the run, or find C:\Windows\System32\cmd.exe, enter the bin subdirectory of the mysql decompression directory,
C:\Documents and Settings\Administrator>cd\
C:\>d:
D:\>cd wamp
D:\wamp>cd mysql
D:\wamp\mysql>cd bin
D:\wamp\mysql\bin>
D: \wamp\mysql\bin>mysqld -install 
prompts: Service successfully installed. And the installation is successful.
(CMD command: CD\ return to the root directory
           D: enter D drive 
           cd wamp enter the WAMP folder)
6
Start, stop, and remove the MYSQL service
  Start the MYSQL service: net start mysql
  Stop the MYSQL service: net stop mysql
  Remove the mysql service: mysqld -remove
Start the service here to facilitate the next step.
7
Modify the root password:
enter cmd during operation, jump to the installation directory /bin,
D:\wamp\mysql\bin>mysql -uroot
mysql>show databases; 
mysql>use mysql;
mysql>delete from User where User="" ;
mysql>update User set Password=PASSWORD('newpassword') where User='root';
mysql>FLUSH PRIVILEGES; 
mysql>quit;
FLUSH PRIVILEGES: Force MySQL to reload permissions, which will take effect immediately.
At this point , you can use the following command to log in:
D:\wamp\mysql\bin>mysql -uroot -p
ENTERPASSWORD:newpassword
8
8: Common command
mysql>show databases; show all tables
mysql>use mysql; switch to table mysql         
mysql>show tables; show the structure of the table
Note :
cmd should be run as an administrator
Enter mysql and enter the command ending with a semicolon


Multiple methods for MySQL to change the root password
mysql root
method 1: Use SET PASSWORD command
　　mysql -u root
　　mysql> SET PASSWORD FOR 'root'@'localhost' = PASSWORD('newpass');
Method 2: Use mysqladmin
　　mysqladmin -u root password "newpass"
　　If root has already set a password, use the following method
　　mysqladmin -u root password oldpass "newpass"
Method 3: Edit user table
　　mysql directly with UPDATE -u root
　　mysql> use mysql;
　　mysql> UPDATE user SET Password = PASSWORD('newpass') WHERE user = 'root';
　　mysql> FLUSH PRIVILEGES ;
When you lose the root password, you can do this
　　mysqld_safe --skip-grant-tables&
　　mysql -u root mysql
　　mysql> UPDATE user SET password=PASSWORD("new password") WHERE user='root';
　　mysql> FLUSH PRIVILEGES;

MySql access denied for user error
Step read
Method/Step
1
The "access denied for user **@**" error in MySql remote connection caused me a lot of trouble, and I found out the solution later. Record it, for fear of forgetting it later:
2
First log in to MySQL locally, and then execute these two lines of code: GRANT ALL PRIVILEGES ON *.* TO root@'%' IDENTIFIED BY '000000';FLUSH PRIVILEGES;Format: grant permission on database name .Table name user@login host identified by "user password";
3
parameter description: ALL PRIVILEGES indicates the authority assigned to the remote login user, ALL PRIVILEGES indicates all authority, you can also assign select, update, insert, delete individually or in combination Permissions; *.*: The first * represents the name of the database to be empowered, * of course, represents all databases, and the second * represents the table name under the database. Similarly, * represents all tables, for a lazy person like me Of course, I use *.* directly, anyway, I use it for my own development
.
root means the user to be empowered; % means the remote login IP, if you want to restrict the login IP, add the IP you allow to log in here, such as 192.18.1.99, etc., % means no IP restriction (lazy again), 000000 is the user Password for remote login. It's that simple. After running this sentence, run FLUSH PRIVILEGES, and you're done!