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  • Displaying Cursor Information in MongoDB

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    As we know cursor in mongoDB can be defined as return value of query run to mongoDB. The information of can be display using cursor.explain() function as show in below:

    db.collection.find().explain()
    

    The explain() method returns a document with the query plan and, optionally, the execution statistics. The output of this command look like:

    {
        "cursor" : "BasicCursor",
        "isMultiKey" : false,
        "n" : 45,
        "nscannedObjects" : 45,
        "nscanned" : 45,
        "nscannedObjectsAllPlans" : 45,
        "nscannedAllPlans" : 45,
        "scanAndOrder" : false,
        "indexOnly" : false,
        "nYields" : 2,
        "nChunkSkips" : 0,
        "millis" : 74,
        "server" : "my-pc:27017",
        "filterSet" : false
    }
    

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