if (select count(*) from sys.syscolumns where tname='SpaReservations' and cname='Anulirana')=0 then

alter table SpaReservations
Add Anulirana integer  default -1;

update SpaReservations
set Anulirana=-1

end if

GO

COMMENT ON
COLUMN SpaReservations.Anulirana
is '1 ako ima smetka i tia e anulirana v vsichi ostanali sluchai -1'