Neil Conway <[EMAIL PROTECTED]> writes: > On Tue, 2003-03-04 at 15:26, Eric D Nielsen wrote: > > The one place I haven't been able to use PostGreSQL to experiment is with > > regards to updateable views. I've found a few threads in -general and -hackers > > (including one linked from the ToDo list), but they all seem to die out without > > really reaching any sort of conclusion. I've also seen that in many > > cases it appears possible to use triggers/rules to simulate updateable views, > > but that feels like an inelegant solution to me. > > How so? A view is defined by ON SELECT rules; it seems natural, then, > that an updateable view would be defined ON INSERT / ON UPDATE rules. > AFAIK the only deficiency with the status quo is that the system does > not automatically define those insertion rules for you (in the subset of > cases where rules actually *can* be defined: for example, the view can't > include aggregation/grouping, calls to a user-defined function, etc.) > > If you'd like to work on getting PostgreSQL to make views updateable > automatically, that would be cool -- AFAIK no one else is currently > working on it.
Would the rules approach be able to handle inline views? Ie, queries like: UPDATE (select * from a natural join b) set a.foo = b.foo On Oracle this is often the most efficient way to write update queries where the data is coming from other tables. -- greg ---------------------------(end of broadcast)--------------------------- TIP 5: Have you checked our extensive FAQ? http://www.postgresql.org/users-lounge/docs/faq.html
