INSERT INTO dept(deptno, dname, loc)
VALUES(10, 'HR', 'Warsaw');
INSERT INTO dept(deptno, dname, loc)
VALUES(20, 'IT', 'Katowice;');
INSERT INTO dept(deptno, dname, loc)
VALUES(10, 'HR', 'Warsaw');
INSERT INTO dept(deptno, dname, loc)
VALUES(20, 'IT', 'Katowice;');