mongo-＆GT;如何从两个不同的集合

Question

我有两个收集coin1＆amp; coin2，我试图在DESC的日期字段顺序的基础上从两个集合中获取记录。其中coin_id是1

coin1 collection

[{ "_id" : 1, "coin_id" : "1", date: "1516259613150"},
{ "_id" : 2, "coin_id" : "1", date: "1514113680"}]

coin2 collection

[{ "_id" : 1, "coin_id" : "1", date: "1496836604"},
{ "_id" : 2, "coin_id" : "1", date: "1514113680"},
]]

我看起来像这样的结果 - ：

[{ "_id" :1, "coin_id" : "1", date: "1516259613150"},
{ "_id" : 2, "coin_id" : "1", date: "1514113680"}.
{ "_id" : 1, "coin_id" : "1", date: "1514113680"},
{ "_id" : 2, "coin_id" : "1", date: "1496836604"}]

我如何获得此记录。

此处的日期为unix日期格式。

Answer 1

如果您使用mongoose，我认为您可以尝试使用此代码！

Collection.find().sort({'data':'( - or + )1'}).find(function (err, collection){
                   console.log(collection);
       });