Re: GETTING INFO FROM SEQUENCE OBJECTS

In response to JORGE MALDONADO :
> How do I use the functions to get data from sequence objects?
> For example, I need to know what is the value of a serial field after inserting
> a new record; the one assigned to the record just inserted.
>  
> I have tried the psql interfase with the following:
> select currval('restaurant.ordenes_clave_seq');
> but I get a message telling me that "currval of sequence "ordenes_clave_seq" is
> not yet defined in this session.

You have to use nextval() first, without nextval() the current value of
the sequence are undefined in this session.

In other words: first insert your new row into the table, after that
call currval().

Regards, Andreas
--
Andreas Kretschmer
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