SQL 服务器使用 OPENJSON 解析嵌套的 json

Question

我正在尝试读取 JSON，我想解析 SQL 服务器中的每个集合。

结构如下 Root > Action > GoActionFiles / Pools

我想为每个 GoActionFiles > GoActionFile 返回一行，所以它看起来像下面这样；

JSON如下；

DECLARE @Json NVARCHAR(MAX)
SET @Json = 
N'
{
   "Root":{
      "Action":{
         "ActionId":1,
         "OutcomeId":2,
         "ActionDateTime":"2022-11-22T14:28:20.9700312+00:00",
         "GoActionFiles":{
            "GoActionFile":[
               {
                  "Name":"Arigon",
                  "Status":"Failed"
               },
               {
                  "Name":"Butella",
                  "Status":"Passed"
               },
               {
                  "Name":"Chantice",
                  "Status":"Passed"
               },
               {
                  "Name":"Fordwat",
                  "Status":"Passed"
               }
            ]
         },
         "Pools":{
            "Pool":[
               {
                  "Name":"Arigon",
                  "Status":"Passed"
               },
               {
                  "Name":"Butella",
                  "Status":"Failed"
               },
               {
                  "Name":"Chantice",
                  "Status":"Failed"
               },
               {
                  "Name":"Fordwat",
                  "Status":"Failed"
               }
            ]
         },
         "ExtCheck":{
            "Score":800,
            "ExtStatus":"Passed",
            "IntScore":0
         }
   }
}
'

到目前为止，我已经尝试了以下 SQL；

    SELECT ActionId, a.GoActionFiles FROM OPENJSON(@Json, '$.Root.Action') WITH
(
    ActionId INT,
    GoActionFiles NVARCHAR(MAX) AS JSON
) AS a

Answer 1

如果只有一个 actionID，我怀疑这会更高效

Select ActionID           = JSON_VALUE(@Json,'$.Root.Action.ActionId')
      ,GoActionFileName   = [Name]
      ,GoActionFileStatus = [Status]
 From OpenJSON(@Json, '$.Root.Action.GoActionFiles.GoActionFile') 
      with ( [Name] varchar(150),
             [Status] varchar(150)
           ) AS a

如果多个ID

 SELECT A.ActionId
       ,GoActionFileName   = B.[Name]
       ,GoActionFileStatus = B.[Status]
   FROM OPENJSON(@Json, '$.Root.Action') WITH (
                                                ActionId INT,
                                                GoActionFiles NVARCHAR(MAX) AS JSON
                                              ) A
 Cross Apply ( Select * 
                From OpenJSON(GoActionFiles, '$.GoActionFile') 
                        with ( [Name]   varchar(150),
                               [Status] varchar(150)
                              ) B1 
             ) B

两者都返回

ActionId    GoActionFileName    GoActionFileStatus
1           Arigon              Failed
1           Butella             Passed
1           Chantice            Passed
1           Fordwat             Passed