oracle 游标变量

--date2016-7-4

--select * from teachers

declare

type teachers_cursor is ref cursor;

v_teachers_cursor teachers_cursor;

v_teachers teachers%rowtype;

begin

 open v_teachers_cursor for select * from teachers ;

 

 loop 

 fetch v_teachers_cursor into v_teachers; 

  exit when   v_teachers_cursor%notfound;

 

 dbms_output.put_line(v_teachers.user_id || ' ' ||v_teachers.sex);

 end loop;

 close v_teachers_cursor;

    

end;