Hi Khai, Due to the way entities are indexed, there's no way to query directly for entities with empty lists. Your best option is to add a BooleanProperty that you set to True whenever the ListProperty is empty, and query on that.
-Nick Johnson On Thu, Jun 25, 2009 at 11:44 PM, Khai<khaitd...@gmail.com> wrote: > > I have a model: > > class BlogEntry(db.Model): > content = db.TextProperty() > tags = db.StringListProperty() > > To fetch entries that had been tagged with 'Math', I would write a > GQL: > > BlogEntry.gql("WHERE tags = :tag", tag = "Math") > > How can I fetch entries that had not been tagged? > > > -- Nick Johnson, App Engine Developer Programs Engineer Google Ireland Ltd. :: Registered in Dublin, Ireland, Registration Number: 368047 --~--~---------~--~----~------------~-------~--~----~ 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-appengine@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 -~----------~----~----~----~------~----~------~--~---