oracle中游标的使用

1）--- 使用带参数的游标;

declare

     CURSOR stock_cur(symbol_in VARCHAR2) IS 

       SELECT * FROM rate_combine_nr nr WHERE nr.combine_no=symbol_in;

     stock_info stock_cur%ROWTYPE;   

begin

   OPEN stock_cur('G600000001'); --打开游标;

   loop   

     FETCH stock_cur INTO stock_info; --从游标中取值

     exit when stock_cur%notfound;

       dbms_output.put_line(stock_info.combine_no||'-'||stock_info.department_code);   

   end loop;

  close stock_cur; --关闭游标

end;