Deleting data from two tables

Question

The data is migrated to our production database by accident and I would like to delete those records by using the created date and created by. this information is exits in two tables and I am wondering what i need to do to
delete the records from both tables. refvendor is the main table. please help.
SELECT *
FROM refvendor v, refvendoraddress a
WHERE v.refvendor_id = a.refvendor_id
AND v.createdby = 'Migration'
AND TRUNC (v.created_dt) = TO_DATE ('5/4/2010', 'MM/DD/YYYY')

Answer 1

You can set the foreign key on: on delete cascade;
example:
SQL> create table refvendor (refvendor_id number);
Table created.
SQL> alter table refvendor add primary key (refvendor_id);
Table altered.
SQL> create table refvendoraddress (refvendor_id number);
Table created.
SQL> alter table refvendoraddress add constraint refvendoraddress_r01 foreign key (refvendor_id)
  2  references refvendor (refvendor_id) on delete cascade;
Table altered.
SQL> insert into refvendor values (1);
1 row created.
SQL> insert into refvendor values (2);
1 row created.
SQL> insert into refvendor values (3);
1 row created.
SQL> insert into refvendor values (4);
1 row created.
SQL> insert into refvendor values (5);
1 row created.
SQL> insert into refvendoraddress values (1);
1 row created.
SQL> insert into refvendoraddress values (2);
1 row created.
SQL> insert into refvendoraddress values (3);
1 row created.
SQL> insert into refvendoraddress values (4);
1 row created.
SQL> insert into refvendoraddress values (5);
1 row created.
SQL> delete from refvendor where refvendor_id > 3;
2 rows deleted.
SQL> select count(*) from refvendor;
  COUNT(*)                                                                     
         3                                                                     
SQL> select count(*) from refvendoraddress;
  COUNT(*)                                                                     
         3                                                                      L.