将嵌套的JSON数据加载到MS SQL中（返回空值）

我将一个非常简单的JSON文件引入MS SQL数据库。我已经创建了表，当我进行查询时，除了一个名为“Address”的嵌套部分外，我可以将所有数据都处理得很好

JSON的片段：

{
   "sold_price": Sample,
   "auction_date": "Sample",
"address": {
      "state": "Sample",
      "street": "Sample",
      "number": "Sample",
      "suburb": "Sample",
      "postcode": "Sample",
      "country": "Sample"
   },
   },
   "REA_Agent": "Sample",
   "sale_date": "2018-08-03 00:13:04+00:00",
 },

DECLARE @BT1 VARCHAR(MAX)

SELECT @BT1 = 
BulkColumn
FROM OPENROWSET(BULK'C:\JSON Test\BT1.json', SINGLE_BLOB) JSON

SELECT @BT1 as BT1_Table;

IF (ISJSON(@BT1) = 1)
BEGIN
PRINT 'JSON File is valid';

INSERT INTO BT1
SELECT *
FROM OPENJSON(@BT1)
WITH(

[state]                 VARCHAR(MAX)    '$.state',
[number]                VARCHAR(MAX)    '$.number',
[street]                VARCHAR(MAX)    '$.street',
[suburb]                VARCHAR(MAX)    '$.suburb',
[postcode]              INTEGER         '$.postcode',
[property_type]         VARCHAR(MAX)    '$.property_type',
[sold_price]            VARCHAR(MAX)    '$.sold_price',
[sold_date]             DATE            '$.sold_date',
[settlement_date]       DATE            '$.settlement_date',
[agency_name]           VARCHAR(MAX)    '$.agency_name',
[bedrooms]              INTEGER         '$.bedrooms',
[bathrooms]             INTEGER         '$.bathrooms',
[parking]               INTEGER         '$.parking',
[auction_date]          DATE            '$.auction_date',
[passed_in]             VARCHAR(MAX)    '$.passed_in',
[will_disclose_sold]    VARCHAR(MAX)    '$.will_disclose_sold'

)
END
ELSE
BEGIN
PRINT 'JSON File is invalid';
END

加载JSON的过程：

{
   "sold_price": Sample,
   "auction_date": "Sample",
"address": {
      "state": "Sample",
      "street": "Sample",
      "number": "Sample",
      "suburb": "Sample",
      "postcode": "Sample",
      "country": "Sample"
   },
   },
   "REA_Agent": "Sample",
   "sale_date": "2018-08-03 00:13:04+00:00",
 },

DECLARE @BT1 VARCHAR(MAX)

SELECT @BT1 = 
BulkColumn
FROM OPENROWSET(BULK'C:\JSON Test\BT1.json', SINGLE_BLOB) JSON

SELECT @BT1 as BT1_Table;

IF (ISJSON(@BT1) = 1)
BEGIN
PRINT 'JSON File is valid';

INSERT INTO BT1
SELECT *
FROM OPENJSON(@BT1)
WITH(

[state]                 VARCHAR(MAX)    '$.state',
[number]                VARCHAR(MAX)    '$.number',
[street]                VARCHAR(MAX)    '$.street',
[suburb]                VARCHAR(MAX)    '$.suburb',
[postcode]              INTEGER         '$.postcode',
[property_type]         VARCHAR(MAX)    '$.property_type',
[sold_price]            VARCHAR(MAX)    '$.sold_price',
[sold_date]             DATE            '$.sold_date',
[settlement_date]       DATE            '$.settlement_date',
[agency_name]           VARCHAR(MAX)    '$.agency_name',
[bedrooms]              INTEGER         '$.bedrooms',
[bathrooms]             INTEGER         '$.bathrooms',
[parking]               INTEGER         '$.parking',
[auction_date]          DATE            '$.auction_date',
[passed_in]             VARCHAR(MAX)    '$.passed_in',
[will_disclose_sold]    VARCHAR(MAX)    '$.will_disclose_sold'

)
END
ELSE
BEGIN
PRINT 'JSON File is invalid';
END

什么不起作用：

{
   "sold_price": Sample,
   "auction_date": "Sample",
"address": {
      "state": "Sample",
      "street": "Sample",
      "number": "Sample",
      "suburb": "Sample",
      "postcode": "Sample",
      "country": "Sample"
   },
   },
   "REA_Agent": "Sample",
   "sale_date": "2018-08-03 00:13:04+00:00",
 },

DECLARE @BT1 VARCHAR(MAX)

SELECT @BT1 = 
BulkColumn
FROM OPENROWSET(BULK'C:\JSON Test\BT1.json', SINGLE_BLOB) JSON

SELECT @BT1 as BT1_Table;

IF (ISJSON(@BT1) = 1)
BEGIN
PRINT 'JSON File is valid';

INSERT INTO BT1
SELECT *
FROM OPENJSON(@BT1)
WITH(

[state]                 VARCHAR(MAX)    '$.state',
[number]                VARCHAR(MAX)    '$.number',
[street]                VARCHAR(MAX)    '$.street',
[suburb]                VARCHAR(MAX)    '$.suburb',
[postcode]              INTEGER         '$.postcode',
[property_type]         VARCHAR(MAX)    '$.property_type',
[sold_price]            VARCHAR(MAX)    '$.sold_price',
[sold_date]             DATE            '$.sold_date',
[settlement_date]       DATE            '$.settlement_date',
[agency_name]           VARCHAR(MAX)    '$.agency_name',
[bedrooms]              INTEGER         '$.bedrooms',
[bathrooms]             INTEGER         '$.bathrooms',
[parking]               INTEGER         '$.parking',
[auction_date]          DATE            '$.auction_date',
[passed_in]             VARCHAR(MAX)    '$.passed_in',
[will_disclose_sold]    VARCHAR(MAX)    '$.will_disclose_sold'

)
END
ELSE
BEGIN
PRINT 'JSON File is invalid';
END

加载后-我只运行了一个基本的Select*来查看，“Address”中的所有字段都返回空值

---

这里有我错过的把戏吗？我所有的调用都返回NULL，我不知道为什么。（如果我可以缩短进程，很高兴收到关于我的代码的反馈/犯了错误）

您想从名为

address

的嵌套元素中读取数据，因此您必须在

中指定
.address
，并为来自嵌套部分的每个值指定
子句：

INSERT INTO BT1
SELECT *
FROM OPENJSON(@BT1)
WITH(
[state]                 VARCHAR(MAX)    '$.address.state',   --<< added ".address"
[number]                VARCHAR(MAX)    '$.address.number',  --<< added ".address"
[street]                VARCHAR(MAX)    '$.address.street',  --<< added ".address"
[suburb]                VARCHAR(MAX)    '$.address.suburb',  --<< added ".address"
[postcode]              INTEGER         '$.address.postcode',--<< added ".address"
[sold_price]            VARCHAR(MAX)    '$.sold_price',
[auction_date]          DATE            '$.auction_date',
[sold_date]             DATE            '$.sold_date',
[settlement_date]       DATE            '$.settlement_date',
[agency_name]           VARCHAR(MAX)    '$.agency_name',
[bedrooms]              INTEGER         '$.bedrooms',
[bathrooms]             INTEGER         '$.bathrooms',
[parking]               INTEGER         '$.parking',
[passed_in]             VARCHAR(MAX)    '$.passed_in',
[will_disclose_sold]    VARCHAR(MAX)    '$.will_disclose_sold',
[property_type]         VARCHAR(MAX)    '$.property_type'
)

如果这与您的结构不同，请更新您的问题并让我知道