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I can't see why your code would not work, but I have done this with a sequence like this, I think :

exec sql
insert into mylib/mypf(vfindex,
vfpnbr,
vfmodel,
vfgroupset)

select :next value for mySequence,
subpart,
modl,
:grouppart
from mylib/mylf join mylf2 on subpart = part
where part = :grouppart and atyp='F_LVL'; ...







-----Message d'origine-----
De : rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] De la part de Luke Gerhardt
Envoyé : mercredi 12 janvier 2011 15:38
À : rpg400-l@xxxxxxxxxxxx
Objet : SQL to increment 'identity' column for multiple rows
in one insert statement?

I have a column in a particular file that I need to keep
unique. I also need to add a batch of records to that file.
In testing, I currently read into a host variable the current
max(index)+1 to get the next available one and then use that
in my subsequent insert statement.
Naturally, when I do I get the same index # for each record.
How can I do one insert statement and guarantee a different
index for each?

I thought of doing a (select max(index)+1) as part of the
insert statement itself, but was concerned that it would only
evaluate that once and not for each record. There is no
commitment control in use.

Here's my code:
...
exec sql
select max(vfindex) + 1,
into :index
from mylib/mylf;
...
exec sql
insert into mylib/mypf(vfindex,
vfpnbr,
vfmodel,
vfgroupset)
select :index,
subpart,
modl,
:grouppart
from mylib/mylf join mylf2 on subpart = part
where part = :grouppart and atyp='F_LVL'; ...

Thanks!


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