Question

我收集了有关职业战士的数据。每个战斗机的信息在JSON中都是这样的：

{
    "id": 1356,
    "name": "Anderson Silva",
    "loc": "Curitiba, Parana",
    "nat": "Brazil",
    "height": 187.96,
    "weight": 83.91,
    "class": "Middleweight"
}

我想读所有这些战士＆＃39;数据到SQL数据库中。我使用的是Microsoft SQL Server。

我创建了一个名为＆＃34; dbo.Fighter＆＃34;的表，其中包含以下内容：

[dbo].[Fighter](
    [ID] [int] NULL,
    [Name] [nvarchar](50) NOT NULL,
    [Location] [nvarchar](50) NULL,
    [Nationality] [nvarchar](50) NULL,
    [HeightInCm] [decimal](18, 2) NULL,
    [WeightInKg] [decimal](18, 2) NULL,
    [WeightClass] [nvarchar](50) NULL
)

当我将Anderson Silva的数据添加到桌面时，他的身高显示为＆＃34; 18796.00＆＃34;和他的体重为＆＃34; 8391.00＆＃34;。显然这些不是我想要的。

出了什么问题，我应该做出哪些改变？

提前感谢您的帮助。如果我的帖子不够详细，请告诉我。

编辑：抱歉，我之前没有说明这一点 - 我也尝试使用＆＃34; float＆＃34;而不是＆＃34;十进制＆＃34;，但遗憾的是结果相同......

编辑：我使用以下F＃代码添加了数据：

let testPath = @"G:\Test Fighter Json.txt" //This file contains Anderson Silva's data
let xmlDoc = JsonConvert.DeserializeXmlNode(File.ReadAllText(testPath), "dbo.Fighter")
let testDataset = new DataSet("Test Dataset")
let xmlReader = new XmlNodeReader(xmlDoc)
testDataset.ReadXml(xmlReader) |> ignore

let connectionString = @"Data Source=USER\SQLEXPRESS;Initial Catalog=Sherdog Test;Integrated Security=True"
let connection = new SqlConnection(connectionString)
connection.Open()
let datatables = testDataset.Tables
for datatable in datatables do
    Console.WriteLine("Bulk insert commenced in table" + datatable.TableName)
    let bulk = new SqlBulkCopy(connection)
    bulk.DestinationTableName <- datatable.TableName.Replace('{',' ').Replace('}',' ')
    bulk.WriteToServer(datatable);
    Console.WriteLine("Bulk insert completed in table" + datatable.TableName)

编辑：我意识到问题是由于我的Windows系统区域设置不是英文的。我改变了它，现在一切都运作良好。抱歉打扰了！

Answer 1

请检查：https://www.simple-talk.com/sql/t-sql-programming/consuming-json-strings-in-sql-server/

然后，使用dbo.ParseJSON（）函数，您可以执行以下操作：

DECLARE @JSON nvarchar(MAX)
SET @JSON = '
{
    "id": 1356,
    "name": "Anderson Silva",
    "loc": "Curitiba, Parana",
    "nat": "Brazil",
    "height": 187.96,
    "weight": 83.91,
    "class": "Middleweight"
}'

SELECT 
    MAX(CASE WHEN p.name = 'id' THEN CONVERT(int, stringvalue) END) AS ID,
    MAX(CASE WHEN p.name = 'name' THEN CONVERT(nvarchar(50), stringvalue) END) AS Name,
    MAX(CASE WHEN p.name = 'loc' THEN CONVERT(nvarchar(50), stringvalue) END) AS Location,
    MAX(CASE WHEN p.name = 'nat' THEN CONVERT(nvarchar(50), stringvalue) END) AS Nationality,
    MAX(CASE WHEN p.name = 'height' THEN CONVERT(decimal(18, 2), stringvalue) END) AS HeightInCm,
    MAX(CASE WHEN p.name = 'weight' THEN CONVERT(decimal(18, 2), stringvalue) END) AS WeightInKg,
    MAX(CASE WHEN p.name = 'class' THEN CONVERT(nvarchar(50), stringvalue) END) AS WeightClass
FROM dbo.ParseJSON(@JSON) p

使用表格中的确切数据类型返回以下内容：

ID      Name            Location            Nationality HeightInCm  WeightInKg  WeightClass
1356    Anderson Silva  Curitiba, Parana    Brazil      187.96      83.91       Middleweight

Answer 2

这是我尝试的C＃代码，它工作正常

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Data;
using Newtonsoft.Json;
using System.Xml;
using System.Data.SqlClient;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
             String testPath = @"G:\TestJson.txt" ;//This file contains    Anderson Silva's data
         XmlDocument xmlDoc = JsonConvert.DeserializeXmlNode(File.ReadAllText(testPath), "dbo.Fighter");
         DataSet testDataset = new DataSet("Test Dataset");
         XmlNodeReader  xmlReader = new XmlNodeReader(xmlDoc);
         testDataset.ReadXml(xmlReader) ;


         String connectionString = @"Data Source=myserver;Initial Catalog=test;Integrated Security=True";
         SqlConnection connection = new SqlConnection(connectionString);
         connection.Open();
         DataTableCollection datatables = testDataset.Tables;
            foreach (DataTable datatable in datatables) 
            {
                Console.WriteLine("Bulk insert commenced in table" + datatable.TableName);
                SqlBulkCopy bulk = new SqlBulkCopy(connection);
                bulk.DestinationTableName= datatable.TableName.Replace('{',' ').Replace('}',' ');
                bulk.WriteToServer(datatable);
                Console.WriteLine("Bulk insert comped in table" + datatable.TableName);
            }
    }
}
}

我的测试数据如下

{Fighter:[{
"id": 1356,
"name": "Anderson Silva",
"loc": "Curitiba, Parana",
"nat": "Brazil",
"height": 187.96,
"weight": 83.91,
"class": "Middleweight"
},
{
"id": 1358,
"name": "Mike",
"loc": "Curitiba, Parana",
"nat": "USA",
"height": 154.43,
"weight": 56.70,
"class": "Lowleweight"
}]}

从JSON读取数据时解析浮点值

2 个答案: