DDL—数据定义语言(Create，Alter，Drop，DECLARE)
DML—数据操纵语言(Select，Delete，Update，Insert)
DCL—数据控制语言(GRANT，REVOKE，COMMIT，ROLLBACK)

---

库

CREATE

CREATE DATABASE db_name;

DROP

DROP DATABASE db_name;

SHOW

SHOW DATABASES;
SHOW CREATE DATABASE db_name;

USE

USE db_name;

---

表

CREATE

CREATE TABLE tb_name(.......);

SHOW

SHOW TABLES;

DESC

DESC db_name;

RENAME

RENAME TABLE tb_name TO new_tb_name;

DROP

DROP TABLE tb_name;

ALTER

修改字段

---

字段（列）

ALTER MODIFY

ALTER TABLE tb_name MODIFY column ......

ALTER CHANGE

ALTER TABLE tb_name CHANGE column_name new_name

ALTER DROP

ALTER TABLE tb_name DROP column

ALTER ADD

ALTER TABLE tb_name ADD column ......

---

记录

SELECT FROM

SELECT * FROM tb_name WHERE,,,;

INSERT INTO

INSERT INTO table_name ( field1, field2,...fieldN )
VALUES
( value1, value2,...valueN );

UPDATE SET

UPDATE table_name SET field1=new-value1, field2=new-value2
WHERE Clause

DELETE FROM

DELETE FROM table_name [WHERE Clause]

---

GRANT

GRANT 权限1，权限2...
ON 对象类型 对象名
TO 用户1，用户2...
(WITH GRANT OPTION) ;

常用操作权限

REVOKE

REVOKE 权限1,权限2...
ON 对象类型 对象名
FROM 用户1,用户2...;

COMMIT

ROLLBACK