Hi,
>> postgres=3D# update t1 set c1 =3D c1 +1;
> This controls whether the constraint can be deferred. A constraint =
that is not deferrable will be checked immediately after every command.
>=20
My understanding would have been, that "update t1 set c1=3Dc1+1;" is ONE =
command, so even in the NOT DEFERRABLE case the check would occur only =
after both values were changed and as such not find any violation of the =
constraint.=20
claudio
--=20
Claudio Nieder . mailto:claudio.nieder@inodes.ch . http://inodes.ch/
iNodes AG . Loogartenstrasse 14 . CH-8048 Z=FCrich . +41 43 960 =
0066
