예제 테이블) with school as ( select '1' as 학년, '쉬시' as 이름, 70 as 점수 from dual union all select '3','용띠' ,54 union all select '3','이웃집청소' ,72 union all select '1','붜워' ,10 union all select '2','윤띵' ,50 union all select '3','츄밍뜨' ,60 union all select '2','BackSengWon' , 15 union all select '2','동탄' ,90 union all select '3','듀탄퐁', 0 ) select * from school; 문제) NOT을 이용하여 학년이 1학년이 아닌 학생들의 레코드를 조회 하세요 wit..
