sad wrote:
> A. Kretschmer wrote:
>
>>> is it expected that the currval() changes its value between calls
>>> within one statement ?
>
>> Conclusion, don't call nextval() within a TRIGGER, and insert either
>> nextval() for the column or omit this column.
>
> I only note that i still want to discuss the titled problem or to be
> given an exact pointer to documentation regarding the currval() behavior
> in the described situation, that i had.
>
Well, your situation is weird, to say the least. currval() doesn't
change the value of a sequence. Adding a trigger that calls nextval()
will change the value. But you're not telling us which kind of
trigger... per statement or for each row ? if it's for each row, then
that's quite understandable.
BTW, sequence functions are described here : http://www.postgresql.org/docs/8.2/interactive/functions-sequence.html
Regards.
--
Guillaume. http://www.postgresqlfr.org http://dalibo.com