Question

我有一个查询，需要发送到SQL Server，并使用text article1 article2 article3 article4 article5 article6 article7将结果作为JSON返回。此查询可以包含一个或多个JOIN。

问题是我希望将结果作为一个简单的平面json返回，每列作为一列，但是FOR FOR JSON自动将其嵌套（Duh），JSON AUTO不适合，因为它使用了点语法，但我希望它完全忽略其中的任何一个。

当然，这可以很容易地在应用服务器上完成，但我非常希望在数据库中完成。

查询：

FOR JSON PATH

结果（用于1）：

SELECT
    [Product].[ProductName] AS [Product.ProductName], 
    [Category].[CategoryName] AS [Category.CategoryName], 
    [Supplier].[CompanyName] AS [Supplier.CompanyName] 
FROM
    [Products] AS [Product] 
    INNER JOIN [Categories] AS [Category] ON [Category].[CategoryID] = [Product].[CategoryID] 
    LEFT JOIN [Suppliers] AS [Supplier] ON [Supplier].[SupplierID] = [Product].[SupplierID] 
FOR JSON AUTO

我正在寻找的结果：

[
    {
        "Product.ProductName":"Test prod",
        "Category":[
            {
                "Category.CategoryName":"Condiments!!!",
                "Supplier":[
                    {
                        "Supplier.CompanyName":"Exotic Liquids"
                    }
                ]
            }
        ]
    }
]

Answer 1

工作解决方案：

WITH test_CTE
AS
(
    SELECT 
        [Product].[ProductName] AS [Product.ProductName],
        [Category].[CategoryName] AS [Category.CategoryName],
        [Supplier].[CompanyName] AS [Supplier.CompanyName] 
    FROM 
        [Products] AS [Product] 
        INNER JOIN [Categories] AS [Category] ON [Category].[CategoryID] = [Product].[CategoryID] 
        LEFT JOIN [Suppliers] AS [Supplier] ON [Supplier].[SupplierID] = [Product].[SupplierID]
)
SELECT * FROM test_CTE FOR JSON AUTO

Answer 2

另一种仅以一对一关系进行的方法：

SELECT
    [Product].[ProductName] AS [Product.ProductName], 
    (SELECT [Category].[CategoryName] FROM [Categories] WHERE [Category].[CategoryID] = [Product].[CategoryID]) AS [Category.CategoryName], 
    (SELECT [Supplier].[CompanyName] FROM [Suppliers] WHERE [Supplier].[SupplierID] = [Product].[SupplierID]) AS [Supplier.CompanyName] 
FROM
    [Products] AS [Product] 
FOR JSON AUTO

来自SQL Server上具有联接查询的FOR JSON的纯JSON结果

2 个答案: