使用 OpenjSon

如何解决使用 OpenjSon

我有一个非常大的 JSON 字符串。我正在尝试使用 SQL 读取某些报告，但 JSON 中至少嵌入了几个级别的对象。如何使用 OpenJson 使用一个 SQL 查询读取所有数据？

我尝试了以下方法

DECLARE @json NVarChar(max) =
(select top 1 Blob
from Vehicles
where Entity = 'Case' and EntityId = 20)

SELECT * FROM OpenJson(@json);

结果看起来像这样我只粘贴了一行，但存在许多这样的行。

{
   "InputFieldId":500,"Name":"CA Port of Intermodal Location","Description":null,"InputFieldEntity":"VehicleField","InputFieldEntityId":-1,"Group":"Drayage","Type":"dropdown","Order":710,"IsDeleted":false,"IsRequired":false,"InputDropdowns":[
      {
         "InputDropdownId":144,"InputField":null,"InputFieldId":500,"Name":"Crocket C&H Sugar Port","Order":10
      },{
         "InputDropdownId":145,"Name":"Hueneme Port","Order":20
      },{
         "InputDropdownId":146,"Name":"Long Beach Port","Order":30
      },{
         "InputDropdownId":147,"Name":"Oakland Port","Order":40
      },{
         "InputDropdownId":148,"Name":"Los Angeles Port","Order":50
      },{
         "InputDropdownId":149,"Name":"Redwood City Port","Order":60
      },{
         "InputDropdownId":150,"Name":"San Diego Port","Order":70
      },{
         "InputDropdownId":151,"Name":"San Francisco Port","Order":80
      },{
         "InputDropdownId":152,"Name":"Stockton Port","Order":90
      },{
         "InputDropdownId":153,"Name":"West Sacramento Port","Order":100
      },{
         "InputDropdownId":154,"Name":"Georgia Pacific Antioch Port","Order":110
      },{
         "InputDropdownId":155,"Name":"IMTT Port","Order":120
      },{
         "InputDropdownId":156,"Name":"Kindermorgan LA Port","Order":130
      },{
         "InputDropdownId":157,"Name":"Kindermorgan Richmond Port","Order":140
      },{
         "InputDropdownId":158,"Name":"Koch Carbon Long Beach Port","Order":150
      },{
         "InputDropdownId":159,"Name":"Mitsubishi Cement Long Beach. Etc. Port","Order":160
      },{
         "InputDropdownId":160,"Name":"UP City of Industry","Order":170
      },{
         "InputDropdownId":161,"Name":"UP ICTF","Order":180
      },{
         "InputDropdownId":162,"Name":"UP LATC","Order":190
      },{
         "InputDropdownId":163,"Name":"UP Lathrop","Order":200
      },{
         "InputDropdownId":164,"Name":"UP LA","Order":210
      },{
         "InputDropdownId":165,"Name":"UP Oakland","Order":220
      },{
         "InputDropdownId":166,"Name":"BNSF Oakland","Order":230
      },{
         "InputDropdownId":167,"Name":"BNSF LA","Order":240
      },{
         "InputDropdownId":168,"Name":"BNSF Richmond","Order":250
      },{
         "InputDropdownId":169,"Name":"BNSF San Bernardino","Order":260
      },{
         "InputDropdownId":170,"Name":"BNSF Stockton","Order":270
      }
   ],"InputValue":{
      "InputValueId":0,"InputValueEntity":"Vehicle","InputValueEntityId":0,"Value":null,"InputDropdown":null,"InputDropdownId":null,"DateCreated":"0001-01-01T08:00:00Z","DateUpdated":"0001-01-01T08:00:00Z","CreatedByUserId":null,"UpdatedByUserId":null,"CreatedByUser":null,"UpdatedByUser":null
   },"isHidden":false
}

我正在寻找一种可以将所有数据显示为一种表格格式的查询。我应该获取字符串的所有小节并将其放入一个表结果中。即使行具有重复值，因为某些父对象值会为子对象重复。对任何 json 字符串运行应该是一个通用查询，因为我们不知道有多少对象嵌套。

查询必须动态地给我列和行，这取决于 json 中字段的深度和数量。例如，如果 Continent、Country、States 和 Cities，那么对于每个 City，State、Country 和 Continent 字段将重复。

但问题是，我们不知道一个特定的 json 文件具有哪些列，但我们知道它们都是仅从一组列生成的。所以我想要一个 SQL 查询来检查表中特定列的值是否存在于 json 中。如果不是，它给出的值为“值不存在”，如果存在则给出该值，所有列都在数据库的表中作为“InputColumnName”、“Type”和“InputFieldEntity”。此处的一些列名称是车主、车辆操作员、日期、怠速开始时间、怠速停止时间、车牌、注册州、VIN、车主 ID、车辆制造商/型号。

如何解决使用 OpenjSon

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