What is MYSQL and how to start and shut down MYSQL? Operate MYS through the command line client

Create a MYSQL account_Create databases and tables_Operate external SQL files

Data type definition and selection

SELECT query like fuzzy query as alias definition rules logical operators

LIMIT statement queries part of the content distinct to remove duplicates ORDER BY sorting method

Character set utf8 gbk big5 utf8 and character

Character set operating principles and garbled code solutions

Unsafe set names and SQL injection principle examples and choosing the appropriate character set processing method