我是MongoDB / Mongoose的新手,我不知道我应该如何得到我想要的结果。基本上我有一个这样的文件:
{
"playerId" : "",
"sessions" : [
{
"start" : "",
"end" : "",
"join" : "",
"leave" : "",
"rounds" : [,
{
"name" : "roundName",
"weapons" : [
{
"name" : "weaponName",
"kills" : 1,
"assits" : 1,
"deaths" : 1,
"shots" : 1,
"headshots" : 1
},
{
"name" : "weaponName",
"kills" : 1,
"assits" : 1,
"deaths" : 1,
"shots" : 1,
"headshots" : 1
}
]
},
{
"name" : "roundName",
"weapons" : [
{
"name" : "weaponName",
"kills" : 1,
"assits" : 1,
"deaths" : 1,
"shots" : 1,
"headshots" : 1
},
{
"name" : "weaponName",
"kills" : 1,
"assits" : 1,
"deaths" : 1,
"shots" : 1,
"headshots" : 1
}
]
},
{
"name" : "roundName",
"weapons" : [
{
"name" : "weaponName",
"kills" : 1,
"assits" : 1,
"deaths" : 1,
"shots" : 1,
"headshots" : 1
},
{
"name" : "weaponName",
"kills" : 1,
"assits" : 1,
"deaths" : 1,
"shots" : 1,
"headshots" : 1
}
]
}
]
}
]
}
我想要的是一个查询,为每一轮(杀戮,死亡,助攻,爆头,投篮)添加领域,其中包含所有武器的总和。如果可能的话,整个会话也应该如此。任何帮助将不胜感激!
以下应该给你按会话分组的统计数据 - >轮次:这里的假设是1)集合的名称是射击游戏2)字段的名称是$ sessions.Rounds.Weapons
db.shootingGame.aggregate(
[
{$group: {
_id: "$sessions.Rounds",
"sumkills": {$sum: "$sessions.Rounds.Weapons.kills" },
"sumasists": {$sum: "$sessions.Rounds.Weapons.assists" },
"sumdeaths": {$sum: "$sessions.Rounds.Weapons.deaths" },
"sumheadshots": {$sum: "$sessions.Rounds.Weapons.headshots" },
"sumshots": {$sum: "$sessions.Rounds.Weapons.shots" }
}}
]
)
但是对于每个会话的进一步分组,您必须将此结果存储到另一个文档中,并且每轮运行另一个$ sum组