mongodb mapreduce如何分頁？

Question

{mapreduce:"topic",
    query:{'time':{'$gte':1443715200}},
    map:function(){emit({name:this.name},this.clickNum);},
    reduce:function(clickNum,numbers){return Array.sum(numbers);},
    out:{inline:1}});

用上面的程式碼查詢後一共有300條數據，這個時候如何對集合進行分頁，例如一頁20條

Answer 1

out可以輸出到某個集合，然後對該集合查詢，分頁