Question

我有一些Json存储在SQL Server 2016表格中（partitial）

{
  "AFP": [
    {
      "AGREEMENTID": "29040400001330",
      "LoanAccounts": {
        "Product": "OD003",
        "BUCKET": 0,
        "ZONE": "MUMBAI ZONE",
        "Region": "MUMBAI METRO-CENTRAL REGION",
        "STATE": "GOA",
        "Year": 2017,
        "Month": 10,
        "Day": 13
      },
      "FeedbackInfo": {
        "FeedbackDate": "2017-10-13T12:07:44.2317198",
        "DispositionDate": "2017-10-13T12:07:44.2317198",
        "DispositionCode": "PR"
      },
      "PaymentInfo": {
        "ReceiptNo": "2000000170",
        "ReceiptDate": "2017-10-13T12:07:42.1218299",
        "PaymentMode": "Cheque",
        "Amount": 200,
        "PaymentStatus": "CollectionBatchCreated"
      }
    }
  ]
}

下的表模式

create table tblHistoricalDataDemo(
AGREEMENTID nvarchar(40)
,Year_Json nvarchar(4000)
)

我想将记录从JSON提取为关系格式

AgreementID产品存档.... PaymentStatus

我尝试过以下但我做错了，我无法得到结果

SELECT AGREEMENTID, 
  JSON_VALUE(Year_Json, '$.LoanAccounts') AS records
FROM tblHistoricalDataDemo

Answer 1

使用OPENJSON内置表值函数：

SELECT *
FROM tblHistoricalDataDemo
CROSS APPLY 
    OPENJSON(Year_Json, '$.AFP') WITH
    (
    -- You don't have to specify the json path
    -- if the column name is the same as the json name
        AGREEMENTID bigint 
    )
 As afp
 CROSS APPLY 
    OPENJSON(Year_Json, '$.AFP') WITH
    (
        Product varchar(10) '$.LoanAccounts.Product', 
        bucket int '$.LoanAccounts.BUCKET'
    )
 As LoanAccounts

Answer 2

如果JSON中的数组具有固定数量的元素，请使用

router.get("/", (req, res) => {
  User.findById(req.user._id, (err, user) => {
    if (err){
      console.log(err);
    }
    Item.find({}, (err, allItems) => {
      if (err) {
        console.log(err);
      }
      res.render("products", { items: allItems });
    });
  });
});

如果AFP只有1个元素，

$.P1[x]

在雅各布的SQLFiddle中运行。

如何在SQL Server 2016中将JSON解析为关系格式？

2 个答案: