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I think I'm overlooking something simple here, I can't imagine this is impossible to do. I … Read more Appengine Filter Inequality And Ordering Fails

I'm trying to do a query into a range of valid dates q = Licence.query(Licence.valid_from = tod… Read more Optimizing A Inequality Query In Ndb Over Two Properties

I've this data model (I made it, so if there's a better way to do it, please let me know). … Read more Efficient Way To Store Relation Values In Ndb

I am developing a twitter like microblogging system by using the following models: class Member(db.… Read more Query With Paging By Cursor Causes Error Because Of Limitations For "in Filter" In Cursor() Method... What Should Be The Alternative?

The most recent release of the GAE states the following changes: Datastore Cross Group (XG) Transa… Read more Cross Group (xg) Transactions And Further Explanation Of Use

I have this datastore model: class Person(db.Model): person_name = db.StringProperty(required … Read more What Is The Best Filter To Query A Full Name Datastore Property Using Only The First Name?

I have the following query in my application query = cls.query().filter(cls.taskgroup_id == taskgro… Read more Ndb Query Builder Doesn't Work As Expected

I have stored pdf files uploaded by users in the Datastore, as BlobProperties: Solution 1: The cod… Read more Displaying Uploaded File In Gae Appengine With Python