MySQL Add new user MySQL create database for user MySQL assign permissions to new users

1. Create a new user

Log in to MySQL
@>mysql-u root-p
@> Password
Create user
mysql> INSERT INTO Mysql.user (Host,user,password) VALUES (' localhost ', ' JEECN ', Password (' JEECN '));
Refresh System Permissions Table
Mysql>flush privileges;
This creates a user named: JEECN Password: JEECN.

Log in after exiting
mysql>exit;
@>mysql-u jeecn-p
@> Enter password
Mysql> Login Successful

2. Authorizing the user

Log in to MySQL (with root privileges). I am logged in as root.
@>mysql-u root-p
@> Password
First create a database for the user (JEECNDB)
Mysql>create database jeecndb;
Authorizing JEECN users to have all rights to the JEECN database
@>grant all privileges in jeecndb.* to[email protected]Identified by ' JEECN ';
Refresh System Permissions Table
Mysql>flush privileges;
Mysql> Other operations

If you want to specify partial permissions to a user, you can write:
Mysql>grant select,update on jeecndb.* to[email protected]Identified by ' JEECN ';
Refreshes the System permissions table.
Mysql>flush privileges;

Mysql> grant permissions 1, permissions 2,... Permission n on the database name. Table name to User name @ user address identified by ' connection password ';

Permissions 1, Permissions 2,... Permission n represents 14 permissions, such as Select,insert,update,delete,create,drop,index,alter,grant,references,reload,shutdown,process,file.
When permissions 1, permissions 2,... Permission n is replaced by all privileges or all to give the user full permission.
When the database name. The table name is replaced by *. *, which indicates that the user is given permission to manipulate all tables on the server.
The user address can be localhost, or it can be an IP address, a machine name, and a domain name. You can also use '% ' to indicate connections from any address.
' Connection password ' cannot be empty, otherwise the creation failed.

For example:
Mysql>grant Select,insert,update,delete,create,drop on Vtdc.employee to[email protected]identified by ' 123′;
The user Jee from 10.163.225.87 is assigned the ability to perform operations such as Select,insert,update,delete,create,drop on the employee table of the database VTDC, and set the password to 123.

Mysql>grant all privileges in vtdc.* to[email protected]identified by ' 123′;
The user Jee from 10.163.225.87 is assigned permission to perform all operations on the database VTDC all tables, and the password is set to 123.

Mysql>grant all privileges on * * to[email protected]identified by ' 123′;
The user Jee from 10.163.225.87 is assigned permission to perform all operations on all tables in all databases, and the password is set to 123.

Mysql>grant all privileges on * * to[email protected]identified by ' 123′;
The native user Jee is assigned permission to perform all operations on all tables in all databases, and the password is set to 123.

3. Delete a user

@>mysql-u root-p
@> Password
Mysql>delete from user WHERE user= "JEECN" and host= "localhost";
Mysql>flush privileges;
Delete a user's database
Mysql>drop database jeecndb;

4. Modify the specified user password

@>mysql-u root-p
@> Password
Mysql>update Mysql.user Set Password=password (' New password ') where user= "JEECN" and host= "localhost";
Mysql>flush privileges;
mysql>quit;

Category: SQL

MySQL Add new user MySQL create database for user MySQL assign permissions to new users