orcale 判断表是否存在并删除

create or replace procedure proc_dropifexists(
p_i_tablename in varchar2 -----表名字
) is
 v_count number(10);
begin
----判断当前用户下是否有对应的表 
select count(*)
 into v_count
 from user_objects
 where object_name = upper(p_i_tablename);

 if v_count > 0 then
----如果存在则使用动态sql drop掉该表
execute immediate 'drop table ' || p_i_tablename;
 end if;
end proc_dropifexists;

----调用办法demo
--SQL> exec proc_dropifexists('T_NEW');