MYSQL user creation, database creation, table creation, authorization, mysql database creation

MYSQL user creation, database creation, table creation, authorization, mysql database creation
1. Create a user
// Log on to MYSQL
@> Mysql-u root-p
@> Password
// Create a user
Mysql> insert into mysql. user (Host, User, Password) values ('localhost', 'tanzuai', password ('123 '));
// Refresh the system permission list
Mysql> flush privileges;
In this way, a user named tanzuai password 123456 is created.

// Log on after exiting
Mysql> exit;
@> Mysql-u tanzuai-p
@> Enter the password
Mysql> logon successful

2. Authorize the user

// Log on to MYSQL (with ROOT permission ). I log on as ROOT.
@> Mysql-u root-p
@> Password
// Create a database for the user (tanzuaidb)
Mysql> create database tanzuaidb;
// Authorize the jeecn user to have all permissions for the jeecn Database
@> Grant all on tanzuaidb. * to tanzuai @ localhost identified by '123 ';
// Refresh the system permission list
Mysql> flush privileges;
Mysql> other operations

// If you want to assign some permissions to a user, you can write as follows:
Mysql> grant select, update on tanzuaidb. * to tanzuai @ localhost identified by 123456;
// Refresh the system permission table.
Mysql> flush privileges;

Mysql> grant permission 1, permission 2 ,... Permission n on database name. Table name to user name @ user address identified by 'Connection password ';

Permission 1, permission 2 ,... Permission n indicates 14 permissions, including select, insert, update, delete, create, drop, index, alter, grant, references, reload, shutdown, process, and file.
When permission 1, permission 2 ,... Permission n is replaced by all privileges or all, indicating that all permissions are granted to the user.
When the database name. Table name is replaced by *. *, it grants the user the permission to operate all the tables in the database on the server.
The user address can be localhost, IP address, machine name, or domain name. You can also use '%' to connect from any address.
The 'Connection password' cannot be blank; otherwise, creation fails.

For example:
Mysql> grant select, insert, update, delete, create, drop on vtdc. employee to tanzuai@10.163.225.87 identified by '123 ′;
Assign the select, insert, update, delete, create, drop and other permissions to user tanzuai from 10.163.225.87 on the database's vtdc employee table, and set the password to 123.

Mysql> grant all on vtdc. * to tanzuai@10.10.10.87 identified by '000000 ′;
Assign the user tanzuai from 10.163.225.87 the permission to perform all operations on all tables in the database vtdc and set the password to 123.

Mysql> grant all on *. * to tanzuai@10.10.10.87 identified by '000000 ′;
Assign the user tanzuai from 10.163.225.87 the permission to perform all operations on all tables in all databases and set the password to 123.

Mysql> grant all privileges on *. * to tanzuai @ localhost identified by '000000 ′;
Assign the local user tanzuai the permission to perform all operations on all tables in all databases, and set the password 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 the user's database
Mysql> drop database tanzuaidb;

4. change the password of a specified user

@> Mysql-u root-p
@> Password
Mysql> update mysql. user set password = password ('new password') where User = "tanzuai" and Host = "localhost ";
Mysql> flush privileges;
Mysql> quit;

5. Create a table
Create table receive_user
(
Waybillno varchar (20) not null check (waybillno! = ''),
Model varchar (20) not null,
Userid varchar (20) not null,
Create_time datetime default null,
Primary key (waybillno)
) Engine = InnoDB default charset = utf8 auto_increment = 1;