Note:
This procedure cannot be used on LOB columns, nor on columns based on user-defined types.
所以你说的牛人解决不了.
create table a (id varchar2(10),name varchar2(20),photo clob)
insert into a values(...);
create table b (id varchar2(10),name varchar2(20),photo clob)
insert into b values(...);
create procedure pro
as
begin
select count(1) into num from (select id,name,dbms_lob.substr(photo) photo from a
minus
select id,name,dbms_lob.substr(photo) from b);
if num>0 then
....
end if;
end;
/