主要进的oracle方面的知识:oracle基础,复合类型,单行函数和组函数-The main approach of the oracle of knowledge: oracle basis, composite type, one-way functions and group functions

SQL语法部分:CREATE TABLE 语句,CREATE SEQUENCE语句,CREATE VIEW语句,INSERT语句,UPDATE语句,DELETE语句,TRUNCATE语句和各类FUNCTIONS。-SQL syntax: CREATE TABLE statement, CREATE SEQUENCE statement, CREATE VIEW statement, INSERT statement, UPDATE statement, DELETE statement, TRU