On Wed, Feb 07, 2007 at 08:09:57PM +0100, Tomas Vondra wrote:
> But I don't understand why the nextval('sessions_id_seq') is evaluated
> multiple times? Even when I do
RULE expand like macros, so every expression passed in is simply copied
to each place, leading to multiple evaluations.
If you've played with the C preprocessor: that has the same basic
problem.
It's rather unexpected for novices, which is why triggers are usually
recommended.
Have a nice day,
--
Martijn van Oosterhout <kleptog@svana.org> http://svana.org/kleptog/
> From each according to his ability. To each according to his ability to litigate.