Delete rows in two tables - sql

Question

I have tow tables
How to make pl/SQL procedure and then job when I delete from table1 where table1.S = Table2.Z and table1.O =90 and table2.P=90 same time to delete in table2

Answer 1

Create trigger for after delete event:
CREATE OR REPLACE TRIGGER trg_aftre_table1
AFTER DELETE
on table1
FOR EACH ROW
BEGIN
-- Delete from table2 when delete ant data from table1
delete from table2 where :OLD.S = Table2.Z and :OLD.O=table2.P ;
END;

Answer 2

That would be a trigger, not a procedure + job.
Here's an example: sample tables & trigger code, which specifies WHEN to fire:
SQL> create table t1 as
2 select 50 s, 90 o from dual union
3 select 51, 90 from dual union
4 select 50, 10 from dual;
Table created.
SQL> create table t2 as
2 select 50 z, 10 p from dual union
3 select 51, 10 from dual union
4 select 50, 90 from dual union
5 select 51, 90 from dual;
Table created.
SQL>
SQL> create or replace trigger trg_ad_t1
2 after delete on t1
3 for each row
4 when (old.o = 90)
5 begin
6 delete from t2
7 where z = :old.s
8 and p = :old.o;
9 end;
10 /
Trigger created.
OK, some deleting: first, one that won't affect TABLE 2:
SQL> delete from t1 where s = 50 and o = 10;
1 row deleted.
SQL> select * From t1;
S O
---------- ----------
50 90
51 90
SQL> select * From t2;
Z P
---------- ----------
50 10
50 90
51 10
51 90
SQL>
And now, the one that affects TABLE 2:
SQL> delete from t1 where s = 50 and o = 90;
1 row deleted.
SQL> select * From t1;
S O
---------- ----------
51 90
SQL> select * From t2;
Z P
---------- ----------
50 10
51 10
51 90
SQL>