Database, SQL, Select, 날짜, 정렬
그룹함수
형변환함수, GROUP, HAVING
ORACLE, DB, JOIN
SET OPERATOR, UNION
SUBQUERY
CREATE, NOT NULL, UNIQUE, PRIMARY KEY, FORIEGN KEY, CHECK
CREATE
시퀀스
익명블록, 일반변수, 상수형변수, 참조형변수, RECORD 타입
ERDCLOUD CREATE SEQUENCE MEMBER_SEQ; CREATE SEQUENCE BOOK_SEQ; CREATE SEQUENCE RENTAL_SEQ; CREATE TABLE MEMBER_TBL ( MEMBER_NO NUMBER