Ron Peterson <ron.peterson@xxxxxxxxxxxxxx> writes: >> Sorry, I don't believe 8.1 took it either. > Hmm, my test table fails in 8.1.4 also, but my actual use case works in > 8.1.4 but not 8.2. You haven't shown us exactly what that C function is doing, but my interpretation of that is that 8.1 failed to check the domain constraints at all, while 8.2 does it correctly. regards, tom lane