• SQL
• 단일행함수
• dbms
• table
• 그룹합수
• Single-Row Function
• DBMS계정
• NVL2
• DB기초
• 가상테이블
• REVOKE
• Natural Join
• 숫자함수
• instr
• substr
• inner join
• 서브쿼리
• Sub Query
• order by
• having
• 문자함수
• outer join
• DML
• sqlplus
• Sequence
• insert
• sum
• Using
• select
• record
• count
• NVL
• replace
• alter
• view
• join
• GROUP BY
• Create
• Grant
• update
• where
• database
• 함수