On Sun, Apr 6, 2014 at 9:46 AM, Julien De Almeida < [email protected]> wrote:
> I want to create a Map object with key a Party and value a Player. > But I don't know how to "join" this two entity. > My entity "Party" have three fields (id, player1_id and player2_id). > My entity "Player" have three fiedls (id, email and surname) > > I want to join like that : > "SELECT * FROM Party, Player WHERE Party.player1_id = Player.id AND > Party.player2_id IS NULL;" > Rafael linked an incredibly insightful SO post, which you should read if you're bent on implementing this using the datastore. But I would also urge you to consider storing your data using Cloud SQL<https://developers.google.com/cloud-sql/>, since you seem to be comfortable expressing your queries in SQL. On Tue, Apr 22, 2014 at 7:20 PM, timh <[email protected]> wrote: > > Is this because no one reads/understands documentation anbd won't explore, > or is a particular mindset so ingrained that any other way > becomes difficult ? > I think it's the latter. It's difficult for many to conceptually understand NoSQL designs and models when the vast majority of developers have years of SQL experience before they touch NoSQL. ----------------- -Vinny P Technology & Media Advisor Chicago, IL App Engine Code Samples: http://www.learntogoogleit.com -- 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 [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/google-appengine. For more options, visit https://groups.google.com/d/optout.
