一个oracle存储的基本问题，%rowtype 前面的表名需要动态获取咋办。

CREATE OR REPLACE PROCEDURE up_czrk_ryjbxx (tab  varchar2 ) 

as

  sfzh varchar2(100);

  cunt number;

  czrk tab%rowtype; --编译时不通过， 有没有办法绕过去呢？

  xhs number default 0;

  CURSOR c_czrk IS SELECT  *  FROM tab;

begin

  OPEN c_czrk;        --打开游标

   LOOP

      FETCH c_czrk INTO czrk;    --提取游标

      exit when c_czrk%notfound; 

        select 1 into cunt from ry_jbxx where sfzh=czrk.gmsfhm and rownum=1;

         if cunt=1 then

            --update

            select 1 from dual;

           else

             --insert

             select 1 from dual;

              end if;

         xhs:=xhs+1;

         if( mod(xhs,10000)=0) then

         commit;  

         end if;        

END LOOP;

commit;

CLOSE c_czrk;   --关闭游标

end;