javascript - MongoDB: truth behind find({...}).limit(#) -

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मोंगोडीबी में, । Find ({...})। सीमा (#) वास्तव में प्रश्नों की संख्या को सीमित करें?

मेरा मतलब है, जब आप db.collection.find (condition) करते हैं, तो क्या यह पहले से ही कम्प्यूटेशनल शक्ति को बर्बाद नहीं करता है, जो सभी परिणामों से मेल खाता है दी गई स्थिति? यदि ऐसा है, तो इसके बाद .limit () जोड़ता है, इसके बाद क्वेरी परिणामों से अनावश्यक तत्वों को हटा दें?

धन्यवाद इसे स्पष्ट करने के लिए बहुत कुछ! < / Div>

db.collection.find परिणाम की एक सरणी या समान नहीं देता है। प्रलेखन से:

जब ढूंढें () विधि "रिटर्न दस्तावेज़," ??? यह विधि वास्तव में दस्तावेजों को एक कर्सर लौट रहा है।

वास्तव में दस्तावेज तब होते हैं जब आप पुनरावृत्त करें कर्सर तो .limit कहता है कि कर्सर कहता है कि इसे पुनरावृत्त किया गया है।

यहां कर्सर के बारे में अधिक:

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