TSQLを使用してJsonを生成する方法

Question

テーブルデータベースsqlserver/mysqlに既に存在するデータからmongodbのソースドキュメントを設計しようとしています。

USE scratch 
GO 

CREATE TABLE Customer(customer_id int identity(1,1), FirstName varchar(100),LastName varchar(100)); 

Create TAble Product(Product_id int identity(1,1), Name varchar(100), Price numeric(18,2), Unit varchar(10)); 


CREATE TABLE OrderTransaction(Tr_id int identity(1,1), customer_id int, Product_id int ,Quantity int, TotalCost numeric, trdate datetime, weigh int , weighunit varchar(100)); 


INSERT INTO Customer(FirstName,LastName) 

SELECT 'Harry','G' 
UNION ALL 
SELECT 'Jenne','G' 
UNION ALL 
SELECT 'Gill','G' 
UNION ALL 
SELECT 'Tom','G' 
UNION ALL 
SELECT 'Bai','G' 



INSERT INTO Product(Name,Price, Unit) 
SELECT 'Sugar',100,'kg' 
UNION ALL 
SELECT 'Olive Oil',500,'litre' 
UNION ALL 
SELECT 'Loreal Face Wash',200,NULL 
UNION ALL 
SELECT 'FLour',400,'kg' 
UNION ALL 
SELECT 'Onion',20,'kg' 
UNION ALL 
SELECT 'Potato',10,'kg' 



INSERT INTO OrderTransaction(customer_id,Product_id,Quantity,TotalCost,trdate,weigh,weighunit) 
SELECT 1,1,5,500,GETDATE()-40,5,'kg' 
UNION ALL 
SELECT 1,2,1,2500,GETDATE()-40,5,'litre' 
UNION ALL 
SELECT 1,3,5,500,GETDATE()-30,5,'kg' 
UNION ALL 
SELECT 1,4,1,200,GETDATE()-30,NULL,NULL 
UNION ALL 
SELECT 1,5,5,100,GETDATE(),5,'kg' 
UNION ALL 
SELECT 1,6,5,50,GETDATE(),5,'kg' 

UNION ALL 
SELECT 2,1,5,500,GETDATE()-40,5,'kg' 
UNION ALL 
SELECT 2,2,1,2500,GETDATE()-40,5,'litre' 
UNION ALL 
SELECT 2,3,5,500,GETDATE()-30,5,'kg' 
UNION ALL 
SELECT 2,4,1,200,GETDATE()-30,NULL,NULL 
UNION ALL 
SELECT 2,5,5,100,GETDATE(),5,'kg' 
UNION ALL 
SELECT 2,6,5,50,GETDATE(),5,'kg' 

以下のようにスキーマを使用して、私は3人の表の顧客を用意しました製品&注文取引を実施するための

は、私は、SQL Server 2016年にJSONのパスを試してみたが、グループに任意のドキュメント を見つけられませんでした顧客に基づく取引では、各取引を文書として作成します。

select a.customer_id as 'Customer.customer_id' 
,FirstName as 'Customer.FirstName' 
,LastName as 'Customer.LastName' 
,Tr_id as 'Customer.AllTransaction.Tr_id' 
,b.Product_id as 'Customer.AllTransaction.Product_id' 
,Quantity as 'Customer.AllTransaction.Quantity' 
,TotalCost as 'Customer.AllTransaction.TotalCost' 
,p.Name as 'Customer.AllTransaction.ProductName' 


from Customer a 
inner join OrderTransaction b 
on a.customer_id=b.customer_id 
inner join Product p 
on b.Product_id=p.Product_id 
FOR JSON PATH 

私のようなJSONを準備するためのクエリを作成したいと思います：

[ 
    { 
    "customer_id": 1, 
    "FirstName": "Harry", 
    "LastName": "G", 
    "totalsales": 3850.0, 
    "LastTransactionDate": "2014-12-1208: 42: 00.000Z", 
    "AllTransctionList": [ 
     { 
     "Tr_id": 1, 
     "Product_id": 1, 
     "Quantity": 5, 
     "TotalCost": 500, 
     "ProductName": "Sugar" 
     }, 
     { 
     "Tr_id": 2, 
     "Product_id": 2, 
     "Quantity": 1, 
     "TotalCost": 2500, 
     "ProductName": "Olive Oil" 
     }, 
     { 
     "Tr_id": 3, 
     "Product_id": 3, 
     "Quantity": 5, 
     "TotalCost": 500, 
     "ProductName": "Loreal Face Wash" 
     }, 
     { 
     "Tr_id": 4, 
     "Product_id": 4, 
     "Quantity": 1, 
     "TotalCost": 200, 
     "ProductName": "FLour" 
     }, 
     { 
     "Tr_id": 5, 
     "Product_id": 5, 
     "Quantity": 5, 
     "TotalCost": 100, 
     "ProductName": "Onion" 
     }, 
     { 
     "Tr_id": 6, 
     "Product_id": 6, 
     "Quantity": 5, 
     "TotalCost": 50, 
     "ProductName": "Potato" 
     } 
    ] 
    }, 
    { 
    "customer_id": 2, 
    "FirstName": "Jenne", 
    "LastName": "G", 
    "totalsales": 3850.0, 
    "LastTransactionDate": "2014-12-1208: 42: 00.000Z", 
    "AllTransctionList": [ 
     { 
     "Tr_id": 1, 
     "Product_id": 1, 
     "Quantity": 5, 
     "TotalCost": 500, 
     "ProductName": "Sugar" 
     }, 
     { 
     "Tr_id": 2, 
     "Product_id": 2, 
     "Quantity": 1, 
     "TotalCost": 2500, 
     "ProductName": "Olive Oil" 
     }, 
     { 
     "Tr_id": 3, 
     "Product_id": 3, 
     "Quantity": 5, 
     "TotalCost": 500, 
     "ProductName": "Loreal Face Wash" 
     }, 
     { 
     "Tr_id": 4, 
     "Product_id": 4, 
     "Quantity": 1, 
     "TotalCost": 200, 
     "ProductName": "FLour" 
     }, 
     { 
     "Tr_id": 5, 
     "Product_id": 5, 
     "Quantity": 5, 
     "TotalCost": 100, 
     "ProductName": "Onion" 
     }, 
     { 
     "Tr_id": 6, 
     "Product_id": 6, 
     "Quantity": 5, 
     "TotalCost": 50, 
     "ProductName": "Potato" 
     } 
    ] 
    } 
] 

Answer 1

は、あなたはあなたがあなたの製品を得る可能性があります代わりにOrderTransaction入社の

SELECT a.customer_id as 'customer_id' 
,FirstName as 'FirstName' 
,LastName as 'LastName' 
,Tr_id as 'Tr_id' 
,Quantity as 'Quantity' 
,TotalCost as 'TotalCost' 
from Customer a 
inner join OrderTransaction AllTransactionList 
on a.customer_id=AllTransactionList.customer_id 
FOR JSON AUTO 

のようなものを使用する場合があります開始するには最初にデータを入力するか、this example（Query3）のように選択リストで副選択を使用します。

同様：

USE scratch 
GO 




SELECT a.customer_id  AS 'customer_id' 
,FirstName    AS 'FirstName' 
,LastName    AS 'LastName' 
,LastTransactionDate 
,totalsales 
,Tr_id     AS 'Tr_id' 
,ProductName 
,Quantity    AS 'Quantity' 
,TotalCost    AS 'TotalCost' 
FROM 
(SELECT c.customer_id 
,FirstName 
,LastName 
,MAX(trdate) LastTransactionDate 
,SUM(TotalCost)totalsales 

FROM Customer c 
INNER JOIN OrderTransaction o 
ON c.customer_id=o.customer_id 
GROUP BY 
c.customer_id 
,FirstName 
,LastName)a 

INNER JOIN 
    (SELECT 
    o.Tr_id 
    ,o.customer_id 
    ,p.Name AS ProductName 
    ,o.Quantity 
    ,o.TotalCost 
    ,o.trdate 
    ,o.weigh 
    ,o.weighunit 
    FROM OrderTransaction o 
    INNER JOIN Product p 
    ON o.Product_id=p.Product_id)AllTransactionList 

ON a.customer_id=AllTransactionList.customer_id 

FOR JSON AUTO