1. Simple command line connection to database

Command line connection to database

1. open cmd Input mysql -u root -p, Then enter the password to connect to the database
2. a key ： All statements must end with a semicolon
3. Several common statements ：

• show database; --------- View all databases

• use + Database name -------------- Switch database （ This can be done without a semicolon ）

• show tables;--------------- Look at all the tables in the database

• describe + Table name ;----------- View all the information in the table

• 

• create database+ Database name ;-------- Create a database

• exit------------------------------------------ Exit connection

• 
  After creating a database, you can SQLyog View in
  

• - - Single-line comments

• /**/ Multiline comment

4. Whole MySQL It is divided into 4 Languages （ The core is CRUD Additions and deletions ）

• DDL Database definition language
• DML Database operation language
• DQL Database query language
• DCL Database control language