从一个文档数组聚合到另一个文档数组
从一个文档数组聚合到另一个文档数组
提问于 2018-03-23 08:19:55
我正在尝试从一种数据结构转换到另一种数据结构，并使用NoSQL Booster，因为与使用Mongo脚本相比，我更愿意使用SQL查询，这有点懒惰，但到目前为止，它对我来说是有效的。
我有一份文件，它有一系列代表销售收据的行项目。这一行项目是出售的项目。
我使用了下面的SQL查询来生成Mongo脚本来选择，然后从一个文档中重命名值以创建另一个文档。我陷入困境的地方是从数组中选择一些字段，并将它们重命名为新数组中的新文档。
mb.runSQLQuery(`
SELECT object_origin,
party_uuid AS company,
connection_uuid AS connection,
object_created AS object_creation_date,
"object_raw_origin_data.register_sales.sale_date" AS transaction_date,
"object_raw_origin_data.register_sales.total_price"
+ "object_raw_origin_data.register_sales.total_tax" AS transaction_gross_value,
"object_raw_origin_data.register_sales.total_price" AS transaction_net_value,
'goods-service-transaction' AS object_class,
'point-of-sale' AS object_origin_category,
'offline' AS object_origin_type,
object_origin AS object_origin,
"object_raw_origin_data.register_sales.invoice_number" AS transaction_reference,
"object_raw_origin_data.register_sales.status" AS transaction_status,
'GBP' AS transaction_currency,
"object_raw_origin_data.register_sales.sale_products.name" AS 'line_items.item_name'
FROM Vend_raw_transactions
`)除了最后一行之外，上面的查询都能工作，这一行在名为line_items的文档中创建了一个对象，但它不是数组。源也是一个数组。
下面是它为我创建的Mongo脚本：
db.Vend_raw_transactions.aggregate(
[{
"$project": {
"object_origin": "$object_origin",
"company": "$party_uuid",
"connection": "$connection_uuid",
"object_creation_date": "$object_created",
"transaction_date": "$object_raw_origin_data.register_sales.sale_date",
"transaction_gross_value": {
"$add": [
"$object_raw_origin_data.register_sales.total_price",
"$object_raw_origin_data.register_sales.total_tax"
]
},
"transaction_net_value":
"$object_raw_origin_data.register_sales.total_price",
"object_class": "goods-service-transaction",
"object_origin_category": "point-of-sale",
"object_origin_type": "offline",
"transaction_reference":
"$object_raw_origin_data.register_sales.invoice_number",
"transaction_status": "$object_raw_origin_data.register_sales.status",
"transaction_currency": "GBP",
"line_items.item_name":
"$object_raw_origin_data.register_sales.sale_products.name"
}
}])有人知道为什么最后一句不适合我吗？
"line_items.item_name": "$object_raw_origin_data.register_sales.sale_products.name"我很确定我错过了一个*某个地方。谢谢，马特
编辑以添加Vend事务的示例
{
"object_category" : "application",
"object_type" : "register-sales-24-months",
"object_origin" : "vend",
"tenant_uuid" : "00000000-0000-0009-9999-999999999999",
"party_uuid" : "8d519765-05d2-469f-ad35-d7a22fa9df2f",
"subscription_uuid" : "0",
"connection_uuid" : "6ed9bd79-d9c5-4296-a821-7e15b1c69e6c",
"status" : "",
"object_created" : ISODate("2018-03-15T21:40:57.158+0000"),
"object_raw_origin_data" : {
"pagination" : {
"results" : NumberInt(75964),
"page" : NumberInt(1),
"page_size" : NumberInt(200),
"pages" : NumberInt(380)
},
"register_sales" : {
"id" : "776a66f2-993c-b372-11e8-26f9bbe253f4",
"source" : "USER",
"source_id" : "",
"register_id" : "02dcd191-ae55-11e6-edd8-ec8dce1d9e1c",
"market_id" : "3",
"customer_id" : "02d59481-b67d-11e5-f667-b08185e8f6d5",
"customer_name" : "",
"customer" : {
"id" : "02d59481-b67d-11e5-f667-b08185e8f6d5",
"name" : "",
"customer_code" : "WALKIN",
"customer_group_id" : "02d59481-b67d-11e5-f667-b08185e893f8",
"customer_group_name" : "All Customers",
"updated_at" : "2016-01-01 12:16:44",
"deleted_at" : "",
"balance" : "0",
"year_to_date" : "0",
"date_of_birth" : "",
"sex" : "",
"custom_field_1" : "",
"custom_field_2" : "",
"custom_field_3" : "",
"custom_field_4" : "",
"note" : "",
"contact" : {
}
},
"user_id" : "02d59481-b655-11e5-f667-dca974edc4ea",
"user_name" : "Alvaro Velosa",
"sale_date" : "2018-03-13 20:04:57",
"created_at" : "2018-03-13 20:05:08",
"updated_at" : "2018-03-13 20:05:08",
"total_price" : 3.5,
"total_cost" : 2.74,
"total_tax" : NumberInt(0),
"tax_name" : "No Tax",
"note" : "",
"status" : "CLOSED",
"short_code" : "newa6f",
"invoice_number" : "Masonic2107Temple",
"accounts_transaction_id" : "",
"return_for" : "",
"register_sale_products" : [
{
"id" : "776a66f2-993c-b372-11e8-26f9cbf10f10",
"product_id" : "02dcd191-ae55-11e7-f130-9d4f4bcd91b1",
"register_id" : "02dcd191-ae55-11e6-edd8-ec8dce1d9e1c",
"sequence" : "0",
"handle" : "LAGERDRAUGHT300",
"sku" : "10287",
"name" : "LAGER DRAUGHT £3.00",
"quantity" : NumberInt(1),
"price" : 3.5,
"cost" : 2.74,
"price_set" : NumberInt(0),
"discount" : NumberInt(0),
"loyalty_value" : NumberInt(0),
"tax" : NumberInt(0),
"tax_id" : "02d59481-b67d-11e5-f667-b08185ec2871",
"tax_name" : "No Tax",
"tax_rate" : NumberInt(0),
"tax_total" : NumberInt(0),
"price_total" : 3.5,
"display_retail_price_tax_inclusive" : "0",
"status" : "CONFIRMED",
"attributes" : [
{
"name" : "line_note",
"value" : ""
}
]
}
],
"totals" : {
"total_tax" : NumberInt(0),
"total_price" : 3.5,
"total_payment" : 3.5,
"total_to_pay" : NumberInt(0)
},
"register_sale_payments" : [
{
"id" : "776a66f2-993c-b372-11e8-26f9cd75e9aa",
"payment_type_id" : "1",
"register_id" : "02dcd191-ae55-11e6-edd8-ec8dce1d9e1c",
"retailer_payment_type_id" : "02d59481-b655-11e5-f667-b0a23bc0e7bc",
"name" : "Cash",
"label" : "Account Customer",
"payment_date" : "2018-03-13 20:04:57",
"amount" : NumberInt(10)
},
{
"id" : "776a66f2-993c-b372-11e8-26f9cd7a3096",
"payment_type_id" : "1",
"register_id" : "02dcd191-ae55-11e6-edd8-ec8dce1d9e1c",
"retailer_payment_type_id" : "02d59481-b655-11e5-f667-b0a23bc0e7bc",
"name" : "Cash",
"label" : "Account Customer",
"payment_date" : "2018-03-13 20:04:57",
"amount" : -6.5
}
]
}
}
}回答 1
Stack Overflow用户
回答已采纳
发布于 2018-03-23 09:32:10
通过将数组元素映射到$map键，使用item_name运算符将字段形状为数组：
"line_items": {
"$map": {
"input": "$object_raw_origin_data.register_sales.register_sale_products",
"as": "product",
"in": { "item_name": "$$product.name" }
}
} 输出
"line_items" : [
{
"item_name" : "LAGER DRAUGHT £3.00"
}
]页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/49445177
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