W dniu 05.03.2016 o 01:03, David G. Johnston pisze: [----------------] > > I've made my point and am not fluent enough to discuss the issues that > would need to be addressed to implement a FK-to-a-partial-unique-index > feature. > > I recall having hit this limitation myself previously so I too wouldn't > mind seeing it implemented - but doing so without degrading the > performance of all FK-related queries is important too - and the > increase in risk of having bugs in the short term is quite high given > that the fundamental operation of a key module needs to be changed. Its > not something whose cost-benefit analysis reports favorably. > I see your point and mostly (not fuly, though) I agree. The questions I raised aimed at weeding out "mathematical" constraints from "implementation" one. I just wanted to know if its "impossible", or just "hard/dangerous to do". I think I have a broader picture now. Thenx for all the explanations, -R -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
