Creating/Inserting sequence. V 1.6

Question

Hi, I have a Create Record page with a hidden ' :P2_ERROR_NUMBER ' item. I would like this number to increase sequentially every time a new record is created and added to my 'METADATACOPY' table. Right now there are around 70 records in the table with the first ten records having error numbers 1-10 in order.<br><br>Can I create a sequence that will begin at error number 11 when I view the 11th record and submit it to the table for an update, increment by 1, with last number 10?<br><br>
Right now I have:<br>
Name METADATACOPY_ERRNUM_SEQ <br>
Min Value 1 <br>
Max Value 999999999999999999999999999 <br>
Increment By 1 <br>
Cycle Flag N <br>
Order Flag N <br>
Cache Size 20 <br>
Last Number 10 <br><br>
Would the next step be to create a process on page 2 such as:<br>
Name:Error_Number,
PointOnload - before header?<br><br>
If I create this as a process do I need to create a trigger?

Answer 1

Hi Leo,
I am not 100 % I understand what you are asking. :-) Why don’t you just assign an ERROR_NUMBER to the 70 rows you have manually. Then alter the sequence so it starts with the 71.
To get the ERROR_NUMBER to increase automatic make a database trigger something like this:
create or replace metadatacopy_b_ins_r
after insert on metadatacopy
for each row
begin
if :new.error_number id null then
select metadatacopy_errnum_seq.nextval
into :new.error_number
from dual
end if;
end;
This is what I normally do. But you can also do it in the application with an on submit after computations and validations process with source like this:
declare
function get_pk return varchar2
is
begin
for c1 in (select metadatacopy_errnum_seq.nextval next_val
from dual)
loop
return c1.next_val;
end loop;
end;
begin
:P2_ERROR_NUMBER := get_pk;
end;
The process should be linked to the CREATE button via the conditional processing in the process.
Hope this helps.