存储过程接收JSON格式数据

前端有可能一次性上传多笔记录，并使用JSON序列化。

现在在MS SQL Server 2016版本上，可以直接处理JSO数据。

如下面的前端序列化的数据：

DECLARE @json_string NVARCHAR(MAX) = N'
    {
        "catalog":[
        {"ID":23394,"Item":"I32-GG443-QT0098-0001","Category":"S","Qty":423.65},
        {"ID":45008,"Item":"I38-AA321-WS0098-0506","Category":"B","Qty":470.87},
        {"ID":14350,"Item":"K38-12321-5456UD-3493","Category":"B","Qty":200.28},
        {"ID":64582,"Item":"872-RTDE3-Q459PW-2323","Category":"T","Qty":452.44},
        {"ID":23545,"Item":"098-SSSS1-WS0098-5526","Category":"S","Qty":500.00},
        {"ID":80075,"Item":"B78-F1H2Y-5456UD-2530","Category":"T","Qty":115.06},
        {"ID":53567,"Item":"PO0-7G7G7-JJY098-0077","Category":"Q","Qty":871.33},
        {"ID":44349,"Item":"54F-ART43-6545NN-2514","Category":"S","Qty":934.39},
        {"ID":36574,"Item":"X3C-SDEWE-3ER808-8764","Category":"Q","Qty":607.88},
        {"ID":36574,"Item":"RVC-43ASE-H43QWW-9753","Category":"U","Qty":555.19},
        {"ID":14350,"Item":"K38-12321-5456UD-3493","Category":"B","Qty":200.28},
        {"ID":64582,"Item":"872-RTDE3-Q459PW-2323","Category":"T","Qty":452.44},
        {"ID":80075,"Item":"B78-F1H2Y-5456UD-2530","Category":"T","Qty":115.06},
        {"ID":53567,"Item":"PO0-7G7G7-JJY098-0077","Category":"Q","Qty":871.33},
        {"ID":44349,"Item":"54F-ART43-6545NN-2514","Category":"S","Qty":934.39},
        {"ID":44349,"Item":"54F-ART43-6545NN-2514","Category":"S","Qty":934.39},
        {"ID":36574,"Item":"X3C-SDEWE-3ER808-8764","Category":"Q","Qty":607.88}]
    }
'

在数据库中，创建一张表来存储这些数据：

CREATE TABLE [dbo].[Parts Catalog]
(
    [ID] INT,
    [Item] NVARCHAR(40),
    [Category] NVARCHAR(25),
    [Qty] DECIMAL(18,2)
)
GO

创建存储过程来接收并处理JSON数据：

CREATE  PROCEDURE [dbo].[usp_Parts_Catalog_Insert]
(
    @json_string NVARCHAR(MAX)
)
AS
INSERT INTO [dbo].[Parts Catalog]([ID],[Item],[Category],[Qty])
SELECT [ID],[Item],[Category],[Qty] FROM OPENJSON(@json_string,'$.catalog')
WITH
(
    [ID] INT '$.ID',
    [Item] NVARCHAR(40) '$.Item',
    [Category] NVARCHAR(25) '$.Category',
    [Qty] DECIMAL(18,2) '$.Qty'
)
GO

执行存储过程，并查询表数据：

以前上传多笔记录，均是使用表函数来处理，现在可以使用OPENJSON方法来进行。