No, there are no 'joins' as such. But can use ReferenceProperty's to reference other entities
https://developers.google.com/appengine/articles/modeling which will automatically be 'dereferenced' for you when used. NDB also has KeyProperty for the same purpose (but AFAIK its not automatically dereferenced) (in general though, its best to denormalize in the datastore, not normalize like used to with mysql and other rdbms's) On Wed, May 29, 2013 at 6:27 AM, Sravan Thotakura <srvn...@gmail.com> wrote: > Can any one let me know about how to retrieve data from multiple entities > from DataStore?? I mean it should work like Join in MYSQL!!! Is that > Possible???? > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to google-appengine+unsubscr...@googlegroups.com. > To post to this group, send email to google-appengine@googlegroups.com. > Visit this group at http://groups.google.com/group/google-appengine?hl=en. > For more options, visit https://groups.google.com/groups/opt_out. > > > -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to google-appengine+unsubscr...@googlegroups.com. To post to this group, send email to google-appengine@googlegroups.com. Visit this group at http://groups.google.com/group/google-appengine?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
