hi, i have two tables
create table a (x integer); create table b (y real); i have the special constraint that the sum of the number of rows in table a plus the number of rows in table b must be even. so there is a posibility of adding one element to a and one element to b, and again the constraint is met. but this of course does not work, since between adding the element to a and adding the element to b, the constraint is not met. so i cannot use a trigger. what i need is the execution of a check procedure at commit time. is that somehow possible? my database has much more tables than just a and b, and most time the other tables are modified and not a or b, so it would be nice to execute the constraint checking procedure only if a or b was modified. yes :) this question i asked in my former mail too, but I think it looked like there was a workaround and my problem was wrong. so i created this new kind of problem here to make things clearer. cu Erik -- Erik Thiele ---------------------------(end of broadcast)--------------------------- TIP 7: don't forget to increase your free space map settings
