ORACLE 判断表是否存在|不存在则新建|存在则先删除后新建

declare 

i integer; 

begin 

select count(*) into i from user_tables where table_name = 'TMP_T_CATER_DELIVERYADDRESS'; 

if i > 0 then 

dbms_output.put_line('该表已存在!'); 

execute immediate 'DROP TABLE TMP_T_CATER_DELIVERYADDRESS'; 

else 

dbms_output.put_line('该表不存在'); 

end if; 

execute immediate 'CREATE TABLE TMP_T_CATER_DELIVERYADDRESS(id int primary key,name varchar(50))'; 

end;