Database of sentence learning (additions and deletions to check and change)

Database statements are divided into three main categories: Data definition Language (DDL), Data Manipulation language (DML), Data Control Language (DCL)

Ddl:create Database xiaotest creates a db with a database named Xiaotest.

Drop database Xiaotest Delete one of the databases named Xiaotest.

Dalter database xiaotest modify Name=xiao; This command executes the error, the workaround is not found

CREATE table Youxi (id int, age int, name varchar (32)); Create a table with table named Youxi

INSERT INTO Youxi

Not to be continued

Database of sentence learning (additions and deletions to check and change)