René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Query order argument incorrectly uses a string as an iterable type. ","articleBody":"When querying an empty dataset that is empty with a sort order, for example:\n\n``` python\nquery = datastore.Query(kind='Book', order='title')\nit = query.fetch(limit=limit, start_cursor=cursor)\nentities, more_results, cursor = it.next_page()\n```\n\nIt raises an exception:\n\n```\nPreconditionFailed: 412 no matching index found.\n```\n\nOnce you create an entity in the dataset, the error disappears. It reappears when you delete all entities.\n\ngcloud-node doesn't suffer from the same problem, as this just returns an empty array for an empty dataset:\n\n``` javascript\nvar q = ds.createQuery([kind])\n      .limit(limit)\n      .order('title')\n      .start(token);\n```\n","author":{"url":"https://github.com/theacodes","@type":"Person","name":"theacodes"},"datePublished":"2015-05-20T22:49:43.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":11},"url":"https://github.com/887/google-cloud-python/issues/887"}