我在 mongo 集合中有一些这样的文档。
{
"_id" : ObjectId("57e290087139be15d59408c1"),
"groupName" : "Registration",
"testCases" : [
{
"name" : "R1",
"browser" : "Chrome",
"status" : "passed"
},
{
"name" : "R1.1",
"browser" : "Chrome",
"status" : "passed"
},
{
"name" : "R2",
"browser" : "Chrome",
"status" : "passed"
},
{
"name" : "R3",
"browser" : "Chrome",
"status" : "passed"
},
{
"name" : "R4",
"browser" : "Chrome",
"status" : "passed"
},
{
"name" : "R1",
"browser" : "Firefox",
"status" : "passed"
},
{
"name" : "R2",
"browser" : "Firefox",
"status" : "passed"
},
{
"name" : "R3",
"browser" : "Firefox",
"status" : "passed"
},
{
"name" : "R4",
"browser" : "Firefox",
"status" : "failed"
}
]
}
{
"_id" : ObjectId("57e2903b7139be15d59408c2"),
"groupName" : "Checkout",
"testCases" : [
{
"name" : "C1",
"browser" : "Chrome",
"status" : "passed"
},
{
"name" : "C2",
"browser" : "Chrome",
"status" : "passed"
},
{
"name" : "C3",
"browser" : "Chrome",
"status" : "failed"
},
{
"name" : "C4",
"browser" : "Chrome",
"status" : "passed"
},
{
"name" : "C1",
"browser" : "Firefox",
"status" : "passed"
},
{
"name" : "C2",
"browser" : "Firefox",
"status" : "passed"
},
{
"name" : "C3",
"browser" : "Firefox",
"status" : "passed"
},
{
"name" : "C4",
"browser" : "Firefox",
"status" : "failed"
}
]
}
如何使用 Mongo 的聚合功能来计算嵌套组的总计和小计百分比？
我期望输出结果为
预期输出示例:
results: [
{
"groupName": "Registration",
"totalTests": 17,
"section": [
{ "name": "R1", "totalTests": 17, "sectionCount": 2 }
]
}
]
最佳答案
您可以尝试运行以下聚合操作:
db.collection.aggregate([
{ "$unwind": "$testCases" },
{
"$group": {
"_id": null,
"testsCount": { "$sum": 1 },
"docs": { "$push": "$$ROOT" }
}
},
{ "$unwind": "$docs" },
{
"$group": {
"_id": {
"groupName": "$docs.groupName",
"testName": "$docs.testCases.name"
},
"count": { "$sum": 1 },
"testsCount": { "$first": "$testsCount" }
}
},
{
"$group": {
"_id": "$_id.groupName",
"totalTests": { "$first": "$testsCount" },
"section": {
"$push": {
"name": "$_id.testName",
"totalTests": "$testsCount",
"sectionCount": "$count"
}
}
}
}
])
关于mongodb - 如何使用 Mongo 聚合功能来计算嵌套组的总计和小计百分比？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/39619747/