뇨내

String Function 문자열 함수 upper(), lower(), initcap() - varchar2 upper(컬럼명) - varchar2 lower(컬럼명) - varchar2 initcap(컬럼명) 1 2 3 4 5 6 7 select first_name, upper(first_name), lower(first_name) from employees; select initcap('abc') from dual; -- first_name에 'DE'가 포함된 직원 select first_name from employees where upper(first_name) like '%DE%'; Colored by Color Scripter cs SUBSTR() - 문자열 추출 함수 - varchar2 s..