On Thu, May 22, 2008 at 12:21:35PM -0400, Owen Hartnett wrote:
> The SQL I've tried is:
> select commcost.maplot, commcost.unitno from commcost
> where not exists(select 1 from commcost, bldg
> where commcost.maplot = bldg.maplot and
> commcost.unitno = bldg.unitno)
> order by commcost.maplot
change it to:
> select commcost.maplot, commcost.unitno from commcost
> where not exists(select 1 from bldg
> where commcost.maplot = bldg.maplot and
> commcost.unitno = bldg.unitno)
> order by commcost.maplot
or simply write:
select * from commcost except select * from bldg;
depesz