You are right, this is not a correct description. I'll just in the process of creating a test db to clarify my point and to produce the symptom.
It'ill me take me some more time, give me an hour or so thks cedric Oliveiros d'Azevedo Cristina wrote: > >>> Can you specify a little more how you represent T1 item sets with this >>> data model? >> (T0.id,T0.fk_T1)=(1,234),(1,235),(1,236) >> 234,235,236 all T1 items and 1 the set of them >>> What exactly represents one row from table T0? A pair (id, fk_T1) ? A >>> set with just one element? >> one item in the set. > > That's what I thought in the first place, actually. > > But then T0.id cannot be a primary key, because IIRC the primary key > integrity constraint doesn't allow repeating of values. > And on the example you 've just posted you have three ID = 1 > > Ain't I Right? > > Also, please, do not forget to CC to list, it's always possible that > someone with more knowledge than me might help you faster > > Best, > Oliveiros > -- Sent via pgsql-sql mailing list (pgsql-sql@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-sql
