Stephen Friedrich <stephen.friedrich@xxxxxxxxxxxx> writes: > Or do you mean that the last rule that > gets evaluated will determine the result, even if it's where clause evaluates > to false? Right. In effect, the last one in alphabetical order will always determine the result, whether it's the one that does the useful insert or not. > Thanks I'll try that. Yet I have only some dozen cdrs at any time, so > I doubt it will make a big difference? Perhaps not, but it's worth checking. regards, tom lane