google app engine - How to return any of the last Models added to the datastore? -

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मैं इसे कैसे संशोधित कर सकता हूँ 

  वीडियो = Video.gql ('WHERE user_id =: 1 ',' 18 ') .फेच (8)   
 ताकि उपयोगकर्ता_आईडी के लिए मिलान करने के बजाय, यह डेटास्टोर में शामिल पिछले 8 वीडियो ऑब्जेक्ट्स को लौटाएगा?   
 
 
 आपको अपने मॉडल को  
  बनाया = db.DateTimeProperty (auto_now_add = सच है)   
 इस प्रकार के प्रश्नों के लिए।  
 इस प्रश्न पर स्वीकृत उत्तर सही नहीं है। यदि आप अपने मॉडल में एक  बनाया  संपत्ति जोड़ते हैं और  -सिरित  और  -__ कुंजी __  द्वारा क्रमबद्ध क्वेरी की तुलना करते हैं तो आप देखेंगे कि वे मेल नहीं खाते हैं।  
 जो कुंजी स्वचालित रूप से सेट की जाती हैं वे मोनोटोनिक रूप से बढ़ते नहीं होंगे। उस पर कुछ अच्छा पढ़ा।

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