Drop table for multiple tables

Question

Hi All,
I want to drop multiple tables in one drop statement.
Can it be possible?
Thanks in advance!!
SA

Answer 1

Hi,
CASCADE CONSTRAINTS must be taken into account. E.g.,
set pages 0
spool c:\windows\temp\drop.sql
select 'DROP TABLE '||TABLE_NAME || ' CASCADE CONSTRAINTS;' from user_tables WHERE table_name like 'ZTEST%';
spool off
@c:\windows\temp\drop.sqlHere is a test case:
SQL> set echo off
SQL> create table ztest1 (ff NUMBER PRIMARY KEY);
Table created
SQL> insert into ztest1 select 1 from dual;
1 row inserted
SQL> create table ztest2 (gg NUMBER, constraint gg_fk foreign key (gg) references ztest1(ff));
Table created
SQL> insert into ztest2 select 1 from dual;
1 row inserted
SQL> drop table ztest1;
drop table ztest1
ORA-02449: unique/primary keys in table referenced by foreign keys
SQL>
SQL> set pages 0
SQL> spool c:\windows\temp\drop.sql
Started spooling to c:\windows\temp\drop.sql
SQL> select 'DROP TABLE '||TABLE_NAME || ' CASCADE CONSTRAINTS;' from user_tables WHERE table_name like 'ZTEST%';
DROP TABLE ZTEST1 CASCADE CONSTRAINTS;
DROP TABLE ZTEST2 CASCADE CONSTRAINTS;
SQL> spool off
Stopped spooling to c:\windows\temp\drop.sql
SQL> @c:\windows\temp\drop.sql
SQL> DROP TABLE ZTEST1 CASCADE CONSTRAINTS;
Table dropped
SQL> DROP TABLE ZTEST2 CASCADE CONSTRAINTS;
Table dropped
SQL>