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SQL> create table cities
2 as
3 select username city
4 from all_users
5 where rownum<=37;
Table created.
SQL>
SQL> alter table cities
2 add constraint
3 cities_pk primary key(city);
Table altered.
SQL>
SQL> create table with_ri
2 ( x char(80),
3 city references cities
4 );
Table created.
SQL>
SQL> create table without_ri
2 ( x char(80),
3 city varchar2(30)
4 );
Table created.
SQL> alter session set sql_trace=true;
Session altered.
SQL>
SQL> declare
2 type array is table of varchar2(30) index by binary_integer;
3 l_data array;
4 begin
5 select * BULK COLLECT into l_data from cities;
6 for i in 1 .. 1000
7 loop
8 for j in 1 .. l_data.count
9 loop
10 insert into with_ri
11 values ('x', l_data(j) );
12 insert into without_ri
13 values ('x', l_data(j) );
14 end loop;
15 end loop;
16 end;
17 /
PL/SQL procedure successfully completed.
SQL>
SQL>
SQL> drop table cities cascade constraint;
Table dropped.
SQL> drop table with_ri;
Table dropped.
SQL> drop table without_ri;
Table dropped.
SQL>
SQL>
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