PL/SQL 游标FOR循环

SQL> set serveroutput on
SQL> declare
2  cursor emp_cursor is
3       select * from emp
4       where deptno=10;
5  begin
6    for r in emp_cursor loop
7      dbms_output.put(r.empno || ' ');
8      dbms_output.put(r.ename || ' ');
9      dbms_output.put(r.job || ' ');
10      dbms_output.put_line(r.sal);
11  end loop;
12  end;
13  /