我得到了@Joao和@Blakes Seven的一些帮助，以便尽可能地得到我。真棒，非常感谢你们。 我遇到的问题是从我原来的简单例子开始，并将其应用到我的现实生活场景中。
我需要的是两个独立的脚本，它们可以完美地工作，但是当我尝试将两者结合在一起时，它只会在不应用第二部分的情况下完成第一部分;这是我在Mongo让我失望的经验。
因此，我可以使用以下代码从文档中的第一个数组中获取名称值对：
db.raw_originBusinessData.aggregate([
{ "$match": {objectOriginAPI : "Profit & Loss"}}
,{ "$unwind": "$objectRawOriginData.Reports" }
,{ "$unwind": "$objectRawOriginData.Reports.Rows" }
,{ "$unwind": "$objectRawOriginData.Reports.Rows.Rows" }
,{ "$group": {"_id": "$_id","first": { "$first": "$objectRawOriginData.Reports.Rows.Rows.Cells.Value" }
, "temp": { "$push": "$objectRawOriginData.Reports.Rows.Rows.Cells.Value" }
}},
{ "$unwind": "$temp" }
,{"$skip":1}
,{ "$group": {"_id": "$_id", "AccountBalance":{ "$first": "$first" }
}}
])
这给了我下面的结果，除了我无法在账户余额数组中命名这两个值之外，我很满意。
任务1 ：我希望AccountBalance是一个数组，第一个位置有两个值：“AccountName”：“Sales”，“AccountValue”：5428.04。
{
"result" : [
{
"_id" : ObjectId("564d12da1506995581569428"),
"AccountBalance" : [
"Sales",
"5428.64"
]
}
],
"ok" : 1.0000000000000000
}
问题的第二部分是它只处理一组值，而我正在处理的文件有9套要做。我在文档上运行了以下$ unwind，它将它们完美地分成了9个结果：
db.raw_originBusinessData.aggregate([
// find document
{ "$match": {objectOriginAPI : "Profit & Loss"}}
// unwind into multiple documents
,{ "$unwind": "$objectRawOriginData.Reports" }
,{ "$unwind": "$objectRawOriginData.Reports.Rows" }
,{ "$unwind": "$objectRawOriginData.Reports.Rows.Rows" }
])
所以我得到了9个完美的结果。 任务2：我想要做的是将它与我上面显示的脚本结合起来。我尝试了以下内容，但它绝对不会比上面的脚本更多。
db.raw_originBusinessData.aggregate([
// find document
{ "$match": {objectOriginAPI : "Profit & Loss"}}
// unwind into multiple documents
,{ "$unwind": "$objectRawOriginData.Reports" }
,{ "$unwind": "$objectRawOriginData.Reports.Rows" }
,{ "$unwind": "$objectRawOriginData.Reports.Rows.Rows" }
]
// process each document
,{ "$unwind": "$objectRawOriginData.Reports" }
, {"$unwind": "$objectRawOriginData.Reports.Rows" }
, {"$unwind": "$objectRawOriginData.Reports.Rows.Rows" }
, {"$group": {"_id": "$_id","first": { "$first": "$objectRawOriginData.Reports.Rows.Rows.Cells.Value" }
, "a": { "$push": "$objectRawOriginData.Reports.Rows.Rows.Cells.Value" }
}},
{ "$unwind": "$a" }
,{"$skip":1}
,{ "$group": {"_id": "$_id", "AccountBalance":{ "$first": "$first" }
}}
)
期望的结果
我想得到的是以下内容。这是任务1和2的组合。
{
"result" : [
{
"_id" : ObjectId("564d12da1506995581569428"),
"AccountBalance" : [
{"AccountName" : "Sales",
"AccountValue" : "5428.64"},
{"AccountName" : "Total Income",
"AccountValue" : "5428.64"},
{"AccountName" : "Cost of Sales",
"AccountValue" : "100.00"},
{"AccountName" : "Total Cost of Sales",
"AccountValue" : "100.00"},
{"AccountName" : "Gross Profit",
"AccountValue" : "5328.64"},
{"AccountName" : "Advertising",
"AccountValue" : "100.00"},
{"AccountName" : "General Expenses",
"AccountValue" : "100.00"},
{"AccountName" : "Total Operating Expenses",
"AccountValue" : "200.00"},
{"AccountName" : "Net Profit",
"AccountValue" : "5128.64"}
]
}
],
"ok" : 1.0000000000000000
}
我作为来源使用的文档来自Xero API - 这是他们的报告之一。它与大多数使用JSON导出的报表具有相同的模式，如Oracle。以下是实际报告，以便您参考。
感谢一百万人，非常感谢！
{
"_id" : ObjectId("564d12da1506995581569428"),
"objectClass" : "Origin Data",
"objectCategory" : "Application",
"objectType" : "Customer",
"connection_id" : "562033dfca91840cd0c7c54f",
"connectionName" : "Building Accounts",
"entity_id" : "564149bcca9183a8d0c7c83c",
"objectCreationDate" : "2015-11-19 14:43:40",
"objectCycleID" : "12345678",
"objectStatus" : "PROCESSED",
"objectOrigin" : "Xero",
"objectOriginAPI" : "Profit & Loss",
"objectOriginService" : "Xero API - Profit & Loss v 1.0.0.8",
"objectRawOriginData" : {
"Id" : "d6e7fb37-9f2e-45ae-b0a4-de62aa95a783",
"Status" : "OK",
"ProviderName" : "Xero API Previewer",
"DateTimeUTC" : "/Date(1443405874333)/",
"Reports" : [
{
"ReportID" : "ProfitAndLoss",
"ReportName" : "Profit and Loss",
"ReportType" : "ProfitAndLoss",
"ReportTitles" : [
"Profit & Loss",
"Paddy's markets",
"28 September 2014 to 28 September 2015"
],
"ReportDate" : "28 September 2015",
"UpdatedDateUTC" : "/Date(1443405874333)/",
"Fields" : [],
"Rows" : [
{
"RowType" : "Header",
"Cells" : [
{
"Value" : ""
},
{
"Value" : "28 Sep 15"
}
]
},
{
"RowType" : "Section",
"Title" : "Income",
"Rows" : [
{
"RowType" : "Row",
"Cells" : [
{
"Value" : "Sales",
"Attributes" : [
{
"Value" : "a7e3f9e4-6f63-4b25-ae36-107131e8b9be",
"Id" : "account"
}
]
},
{
"Value" : "5428.64",
"Attributes" : [
{
"Value" : "a7e3f9e4-6f63-4b25-ae36-107131e8b9be",
"Id" : "account"
}
]
}
]
},
{
"RowType" : "SummaryRow",
"Cells" : [
{
"Value" : "Total Income"
},
{
"Value" : "5428.64"
}
]
}
]
},
{
"RowType" : "Section",
"Title" : "Less Cost of Sales",
"Rows" : [
{
"RowType" : "Row",
"Cells" : [
{
"Value" : "Cost of Sales",
"Attributes" : [
{
"Value" : "f78f7118-ad98-4862-a63c-39dd3c5ace8a",
"Id" : "account"
}
]
},
{
"Value" : "100.00",
"Attributes" : [
{
"Value" : "f78f7118-ad98-4862-a63c-39dd3c5ace8a",
"Id" : "account"
}
]
}
]
},
{
"RowType" : "SummaryRow",
"Cells" : [
{
"Value" : "Total Cost of Sales"
},
{
"Value" : "100.00"
}
]
}
]
},
{
"RowType" : "Section",
"Title" : "",
"Rows" : [
{
"RowType" : "Row",
"Cells" : [
{
"Value" : "Gross Profit"
},
{
"Value" : "5328.64"
}
]
}
]
},
{
"RowType" : "Section",
"Title" : "Less Operating Expenses",
"Rows" : [
{
"RowType" : "Row",
"Cells" : [
{
"Value" : "Advertising",
"Attributes" : [
{
"Value" : "67466588-132b-48ce-b897-0ceabffd7a9d",
"Id" : "account"
}
]
},
{
"Value" : "100.00",
"Attributes" : [
{
"Value" : "67466588-132b-48ce-b897-0ceabffd7a9d",
"Id" : "account"
}
]
}
]
},
{
"RowType" : "Row",
"Cells" : [
{
"Value" : "General Expenses",
"Attributes" : [
{
"Value" : "fdb25d7a-2fc8-406a-bf4b-6b4e8014b8cb",
"Id" : "account"
}
]
},
{
"Value" : "100.00",
"Attributes" : [
{
"Value" : "fdb25d7a-2fc8-406a-bf4b-6b4e8014b8cb",
"Id" : "account"
}
]
}
]
},
{
"RowType" : "SummaryRow",
"Cells" : [
{
"Value" : "Total Operating Expenses"
},
{
"Value" : "200.00"
}
]
}
]
},
{
"RowType" : "Section",
"Title" : "",
"Rows" : [
{
"RowType" : "Row",
"Cells" : [
{
"Value" : "Net Profit"
},
{
"Value" : "5128.64"
}
]
}
]
}
]
}
]
}
}
答案 0 :(得分：0)
完成它，见下文，谢谢：
db.raw_originBusinessData.aggregate([
{ "$match": {objectOriginAPI : "Profit & Loss"}}
,{ "$unwind": "$objectRawOriginData.Reports" }
,{ "$unwind": "$objectRawOriginData.Reports.Rows" }
,{ "$unwind": "$objectRawOriginData.Reports.Rows.Rows" }
,{ "$group": {"_id": "$_id","accountBalances": { "$push": "$objectRawOriginData.Reports.Rows.Rows.Cells.Value" }
}},
])