2과목) 함수의 실행 결과로 적절하지 않은 것은?

SELECT RTRIM(’ ABCDE ‘) FROM DUAL; → ‘ABCDE’ SELECT LTRIM(’XXXYYZZX’, ‘X’) FROM DUAL; → ‘YYZZX’ SELECT SUBSTR(’ORACLE’, -3, 2) FROM DUAL; → ‘CL’ SELECT REPLACE(’APPLE’, ‘P’, ‘B’) FROM DUAL; → ‘APBLE’