从SQL Server 2019数据库表中的json字符串中提取多个值/级别

问题描述

Building on this post here

如何在SQL Server 2019中实现此目标？我有一个带有#Bad code,but simplest in this circumstance. def iterate(arr): global queue for comment in arr: queue.append(comment["detail"]) print(comment["detail"]) #For your debug. iterate(comment["responses"]) post = {} #Put your data here queue = [] iterate(post["comments"]) 列的订单表，其中包含一个json字符串，其中包含所运送物品的行项目详细信息。我需要将每个变量ID和数量提取到单独的行中（每个变量ID 1行）。

以下是实际json字符串的示例：

lineaggregate

解决方法

这不是有效的JSON，但是如果我们进行安排以使其有效，那么我们将获得以下内容：

{
  "Products": [ 
  {
    "id": 4379711799354,"variant_id": 31291380727866,"title": "*NEW* Kayslin Sneaker in Blush","quantity": 1,"sku": "79000212","variant_title": "3Y","vendor": "TESTVENDOR","fulfillment_service": "manual","product_id": 4371426607162,"requires_shipping": true,"taxable": true,"gift_card": false,"name": "*NEW* Kayslin Sneaker in Blush - 3Y","variant_inventory_management": "shopify","properties": [
      {
        "name": "Item Ships Separately","value": "✓"
      }
    ]
    },{
    "id": 4379711832122,"variant_id": 31031946838074,"title": "*NEW* Mama Bird Necklace Set in Gold","sku": "83000109","variant_title": "","product_id": 4320751878202,"name": "*NEW* Mama Bird Necklace Set in Gold","properties": [],"product_exists": true,"fulfillable_quantity": 0,"grams": 113,"price": "29.50","total_discount": "0.00","fulfillment_status": "fulfilled","pre_tax_price": "29.50","price_set": {
      "shop_money": {
        "amount": "29.50","currency_code": "USD"
      },"presentment_money": {
        "amount": "29.50","currency_code": "USD"
      }
    },"pre_tax_price_set": {
      "shop_money": {
        "amount": "29.50","total_discount_set": {
      "shop_money": {
        "amount": "0.00","presentment_money": {
        "amount": "0.00","currency_code": "USD"
      }
    } } ] }

然后，您可以使用OPENJSON()函数并在查询中加入CROSS APPLY连接来提取元素：

SELECT Q2.*
  FROM tab
 CROSS APPLY OPENJSON(JsonData,'$.Products')
             WITH (
                    Products nvarchar(max) '$' AS JSON
                    ) Q1
 CROSS APPLY OPENJSON (Q1.Products) 
             WITH (
                    ID         nvarchar(max) '$.id',variant_id nvarchar(max) '$.variant_id',quantity   nvarchar(max) '$.quantity',properties nvarchar(max) '$.properties[0].name',properties nvarchar(max) '$.properties[0].value',price_shop_money_amt nvarchar(max) '$.price_set.shop_money.amount',price_shop_money_cur nvarchar(max) '$.price_set.shop_money.currency_code'
                  ) Q2 

Demo