-
DDL(Data Definition Language数据定义语言)
CREATE, ALTER，DROP -
DML (Data Manipulation Language数据操控语言)
INSERT, UPDATE,DELETE -
DQL (Data Query Language数据查询语言)
SELECT, SHOW, HELP -
DCL (Data Control Language数据控制语言)
GRANT, REVOKE -
DTL (Data Transaction Language数据事务语言)
START TRANSACTION, SAVEPOINT, COMMIT and ROLLBACK [TO SAVEPOINT]
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