MySQL composition structure and basic operations

This article gives a brief introduction to the commonly used MySQL from the first knowledge of the database.

1. The structure of MySQL
2. MySQL basic operations and instructions

The above-mentioned basic operation instructions, we demonstrate in pycharm:

show databases;

create database recommend2 charset utf8;
drop database recommend2;
create database test2 charset utf8;
show variables like 'character_set_database';
drop database test2;
create database test charset utf8;
select database();
create database test;
use test;
show variables like 'character_set_database';
alter database test charset=gbk;
show databases;  #  数据库的重名名不建议修改，数据库涉及到的增删改查。

to sum up:

1. Will create a database
2. Will delete the database
3. Will change the encoding format of the database,
4. Will query the database
   basically involves so many operation items, the follow-up is to understand the data types of the database, the next article will introduce.