Hi group,
I just noticed getting the next number of a sequence doesn't respect a
transaction.
Here is an example:
=======================================================
erwin=# SELECT nextval('tblofferlabel_offerlabelid_seq'::regclass) as
nextofferlabelid;
nextofferlabelid
------------------
87
(1 row)
erwin=# start transaction;
START TRANSACTION
erwin=# SELECT nextval('tblofferlabel_offerlabelid_seq'::regclass) as
nextofferlabelid;
nextofferlabelid
------------------
88
(1 row)
erwin=# SELECT nextval('tblofferlabel_offerlabelid_seq'::regclass) as
nextofferlabelid;
nextofferlabelid
------------------
89
(1 row)
# rollback;
ROLLBACK
erwin=# SELECT nextval('tblofferlabel_offerlabelid_seq'::regclass) as
nextofferlabelid;
nextofferlabelid
------------------
90
=======================================================
As you can see the sequence just counts on outside the transaction.
I thought a transaction that is rolled back, rolls back *everything*
done in that transaction.
Appearantly sequences are not included.
It is no big deal, since I can easily code this differently, but I was
unpleasantly surprised. :-/
Can anybody comment on this behaviour? Am I missing something?
Thanks!
Regards,
Erwin Moller
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