maillist(at)remo(dot)demon(dot)co(dot)uk writes:
> The problem is with the rule on update.
> This fails with the error...
> ERROR: INSERT has more expressions than target columns
FWIW, this seems to work fine in current sources (7.0beta1). It's
difficult to muster much enthusiasm for figuring out why it was
broken in 6.5...
regards, tom lane