Joins are not supported because the underlying datastore is not sql and therefore doesn't support joins. Save yourself a lot of grief and forget you know anything about SQL when dealing with the datastore.
On Fri, Jul 23, 2010 at 5:36 AM, Uberto Barbini <ube...@ubiland.net> wrote: > On Fri, Jul 23, 2010 at 11:30 AM, ping <bernd.warm...@gmail.com> wrote: > > Hello, > > i read that the GAE implementation of JDO does not support "JOINS". > > Is this right? > > yes > > > Whats the common workaround for it? > > fetch your data separately or create a materialized view and keep it > updated with triggers > > cheers > > Uberto > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine" group. > To post to this group, send email to google-appeng...@googlegroups.com. > To unsubscribe from this group, send email to > google-appengine+unsubscr...@googlegroups.com<google-appengine%2bunsubscr...@googlegroups.com> > . > For more options, visit this group at > http://groups.google.com/group/google-appengine?hl=en. > > -- -- Jeff -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appeng...@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
