Oracle PLSQL Demo - 13.游标的各种属性[Found NotFound ISOpen RowCount CURSOR]

declare
    r_emp scott.emp%rowtype;
    cursor cur_emp is
        select t.* from scott.emp t;

begin

    open cur_emp;

    if cur_emp%isopen then
        dbms_output.put_line('is open...');
    end if;

    loop
        fetch cur_emp
            into r_emp;
    
        if cur_emp%found then
            dbms_output.put_line('found...');
        end if;
    
        if cur_emp%notfound then
            dbms_output.put_line('not found...');
        end if;
    
        exit when cur_emp%notfound;
    
        dbms_output.put_line(cur_emp%rowcount || ' -> ' || r_emp.empno ||
                             '   ' || r_emp.sal);
    
    end loop;

    close cur_emp;

end;