Oracle PLSQL Demo - 20.弱类型REF游标[没有指定查询类型，也不指定返回类型]

declare



    Type ref_cur_variable IS REF cursor;

    cur_variable ref_cur_variable;

    

    v_ename varchar2(10);

    v_deptno number(2);

    v_sal number(7,2);



    v_sql varchar2(100) := 'select t.ename, t.deptno, t.sal from scott.emp t';



begin



    Open cur_variable For v_sql;

    

    Loop

        fetch cur_variable

            InTo v_ename, v_deptno, v_sal;

        Exit When cur_variable%NotFound;

        dbms_output.put_line(cur_variable%rowcount || ' -> ' || v_ename ||

                             '   ' || v_deptno || '   ' || v_sal);

    End Loop;

    Close cur_variable;



end;