skynet获取用户钻石

mongodb获取用户道具（mongodb连表查询）

db.getCollection("base").aggregate(
    [
        
        { 
            "$lookup" : {
                "localField" : "id", 
                "from" : "item", 
                "foreignField" : "user_id", 
                "as" : "item1"
            }
        },  
         { 
            "$unwind" : {
                "path" : "$item1"            
            }
        },        
        { 
            "$match" : {
                "id" : NumberLong(10000), 
                "item1.id" : NumberLong(1001)
            }
        }
    ]
);