Mongodb排序问题
我的mongodb收藏:Mongodb排序问题,mongodb,mongodb-query,Mongodb,Mongodb Query,我的mongodb收藏: [{ "_id" : ObjectId("5dd6598d55396f36052e347d"), "isActive" : true, "myarray" : [ { "my_id" : "5d967d08821b4031a197b002", "name" : "jack" }, { "my_id" : "5d967d2c8
[{
"_id" : ObjectId("5dd6598d55396f36052e347d"),
"isActive" : true,
"myarray" : [
{
"my_id" : "5d967d08821b4031a197b002",
"name" : "jack"
},
{
"my_id" : "5d967d2c821b4031a197b003",
"name" : "manison"
}
]
},
{
"_id" : ObjectId("5dd6598d55396f36052e347d"),
"isActive" : true,
"myarray" : [
{
"my_id" : "5d967d08821b4031a197b002",
"name" : "penelope"
},
{
"my_id" : "5d967d2c821b4031a197b003",
"name" : "cruz"
}
]
}]
在这里,我试图根据名称进行排序。
不希望在数组内部排序,但希望在数组外部排序
期望的结果是什么
[{
"_id" : ObjectId("5dd6598d55396f36052e347d"),
"isActive" : true,
"myarray" : [
{
"my_id" : "5d967d08821b4031a197b002",
"name" : "penelope"
},
{
"my_id" : "5d967d2c821b4031a197b003",
"name" : "cruz"
}
]
},{
"_id" : ObjectId("5dd6598d55396f36052e347d"),
"isActive" : true,
"myarray" : [
{
"my_id" : "5d967d08821b4031a197b002",
"name" : "jack"
},
{
"my_id" : "5d967d2c821b4031a197b003",
"name" : "manison"
}
]
}]
“name”:“cruz”排在第一位,因为字母C比J和M(在第二个json中)来得快
Prenelop和cruz不仅仅切换了按照名称顺序切换的主文档json
我正在使用的查询
db.traffic.aggregate([
{$unwind: "$customFieldArray"},
{$sort: {"customFieldArray.field_value":1}},
{$group: {_id:"$_id", customFieldArray: {$push:"$customFieldArray"}}}
]);
但这就像把克鲁兹带到佩内洛普,反之亦然
而主要经济体保持稳定
请看一看您可以使用
光标进行简单的查找
查询
db.traffic.find({}).sort({ "myarray.name": -1 })
从
对于数组,小于比较或升序排序比较
数组的最小元素,且大于比较或
降序排序比较数组中最大的元素