Sequence.Next_Val as PKJ without trigger

Question

Hi all,
How can I use SEQUENCE.NEXT_VAL to fill a PK, without use trigger?
Tks.

Answer 1

I'd like simulate exactly as "Identity", without use trigger and use without use seq.next_val. I'd like by default when I insert I get the seq.next_val.Here is one sample without using any trigger and also not referencing the sequence in your insert statement ->
satyaki>
satyaki>select * from v$version;
BANNER
Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - Prod
PL/SQL Release 10.2.0.3.0 - Production
CORE    10.2.0.3.0      Production
TNS for 32-bit Windows: Version 10.2.0.3.0 - Production
NLSRTL Version 10.2.0.3.0 - Production
Elapsed: 00:00:00.01
satyaki>
satyaki>drop sequence ss;
Sequence dropped.
Elapsed: 00:00:00.07
satyaki>
satyaki>create sequence ss
  2  start with 1
  3  increment by 1;
Sequence created.
Elapsed: 00:00:00.01
satyaki>
satyaki>create or replace type s_dumm as object
  2    (
  3      n_o     number(10),
  4      d_s_c   varchar2(50),
  5      CONSTRUCTOR function s_dumm(d_s varchar2) return self as result
  6    );
  7  /
Type created.
Elapsed: 00:00:00.43
satyaki>
satyaki>create or replace type body s_dumm
  2   is
  3     CONSTRUCTOR function s_dumm(d_s varchar2)
  4     return self as result
  5     is
  6     begin
  7       select ss.nextval
  8       into n_o
  9       from dual;
10       d_s_c := d_s;
11       return;
12     end;
13   end;
14  /
Type body created.
Elapsed: 00:00:00.44
satyaki>
satyaki>
satyaki> create table test_type of s_dumm;
Table created.
Elapsed: 00:00:00.15
satyaki>
satyaki>
satyaki>select * from test_type;
no rows selected
Elapsed: 00:00:00.05
satyaki>
satyaki>
satyaki>insert into test_type values(s_dumm('First Test.'));
1 row created.
Elapsed: 00:00:00.44
satyaki>
satyaki>select * from test_type;
       N_O D_S_C
         1 First Test.
Elapsed: 00:00:00.06
satyaki>
satyaki>
satyaki>insert into test_type values(s_dumm('Second Test.'));
1 row created.
Elapsed: 00:00:00.06
satyaki>
satyaki>select * from test_type;
       N_O D_S_C
         1 First Test.
         2 Second Test.
Elapsed: 00:00:00.10
satyaki>Regards.
Satyaki De.