db쿼리문 연습2- (MAX,MIN,INNER JOIN, UNION)
/* # a6 DB 삭제/생성/선택 drop database if exists a6 create database a6 use a6 # 부서(홍보, 기획) create table dept( id INT(10) UNSIGNED NOT NULL PRIMARY KEY AUTO_INCREMENT, regDate DATETIME NOT NULL, 'name' char(100) NOT NULL UNIQUE ); # 사원(홍길동/홍보/5000만원, 홍길순/홍보/6000만원, 임꺽정/기획/4000만원) CREATE TABLE emp ( id INT(10) UNSIGNED NOT NULL PRIMARY KEY AUTO_INCREMENT, regDate DATETIME NOT NULL, `name` CHAR(100) NOT..