Misa Simic wrote > Hi hackers, > > I just wonder how hard would be to implement something like "Not In FK > Constraint" or opposite to FK...
A more useful couple next sentences would be along the lines of: I have this problem....I've approached it by doing....but it seems that an actual database enforced constraint would be a better solution. Is that something that has been considered? Are their other ways of attacking this problem I have not considered? You took quite a bit of time to try and start a discussion, and I get that you don't necessarily know where it is going to lead, but "Not In FK constraint", with a descriptive sentence of two, likely would have been enough to get the ball rolling. Instead you devoted more space to technical clarification that would have been better served by espousing on "what problem" and how current approaches to dealing with said problem are limited. A more specific end-question would also help solicit better responses. I say all this because 3 days later nothing more substantial than "why is this feature necessary" has been put forth. The general idea likely has some merit but you've not provided anything for people to hook their teeth into. David J. -- View this message in context: http://postgresql.1045698.n5.nabble.com/Not-In-Foreign-Key-Constraint-tp5771056p5771651.html Sent from the PostgreSQL - hackers mailing list archive at Nabble.com. -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers