将嵌套的名称-值对从json导入SQL Server
我正在将一个json文件导入SQL 2016,该文件在嵌套值结构中有一些嵌套的名称-值对。这是我遇到问题的这些对中的值,例如将嵌套的名称-值对从json导入SQL Server,json,sql-server,sql-server-2016,open-json,Json,Sql Server,Sql Server 2016,Open Json,我正在将一个json文件导入SQL 2016,该文件在嵌套值结构中有一些嵌套的名称-值对。这是我遇到问题的这些对中的值,例如 { "name": "Colour", "value": "Orange" }, { "name": "Calories", "value": "25" } sql: 其结果是: id fruit Colour Weight 1 orange NULL NULL 23 Banana NULL NULL 完整(测试)数据 [ { “id”
{ "name": "Colour", "value": "Orange" }, { "name": "Calories", "value": "25" }
sql:
其结果是:
id fruit Colour Weight
1 orange NULL NULL
23 Banana NULL NULL
完整(测试)数据
[
{
“id”:1,
“水果”:“橙色”,
“价值观”:[
{“名称”:“颜色”,“值”:“橙色”},
{“名称”:“重量”,“值”:“16”},
{“名称”:“卡路里”,“值”:“25”}
]
},
{
“id”:23,
“水果”:“香蕉”,
“价值观”:[
{“名称”:“颜色”,“值”:“黄色”},
{“名称”:“重量”,“值”:“30”},
{“名称”:“卡路里”,“值”:“250”}
]
}
]您可以尝试下一种方法,该方法将返回完整数据:
DECLARE @json nvarchar(max)
SET @json = N'[ { "id": 1, "fruit": "orange", "values": [ { "name": "Colour", "value": "Orange" }, { "name": "Weight", "value": "16" }, { "name": "Calories", "value": "25" } ] }, { "id": 23, "fruit": "Banana", "values": [ { "name": "Colour", "value": "Yellow" }, { "name": "Weight", "value": "30" }, { "name": "Calories", "value": "250" } ] } ]'
SELECT i.id, i.fruit, v.[name], v.[value]
FROM OPENJSON(@json)
WITH (
id int '$.id',
fruit nvarchar(50) '$.fruit',
[values] nvarchar(max) '$.values' AS JSON
) AS i
CROSS APPLY (
SELECT *
FROM OPENJSON(i.[values])
WITH (
[name] nvarchar(max) '$.name',
[value] nvarchar(max) '$.value'
)
) v
输出:
id fruit name value
1 orange Colour Orange
1 orange Weight 16
1 orange Calories 25
23 Banana Colour Yellow
23 Banana Weight 30
23 Banana Calories 250
id fruit Colour Weight
1 orange Orange 16
23 Banana Yellow 30
如果希望输出有关颜色和重量的信息,请尝试以下操作:
DECLARE @json nvarchar(max)
SET @json = N'[ { "id": 1, "fruit": "orange", "values": [ { "name": "Colour", "value": "Orange" }, { "name": "Weight", "value": "16" }, { "name": "Calories", "value": "25" } ] }, { "id": 23, "fruit": "Banana", "values": [ { "name": "Colour", "value": "Yellow" }, { "name": "Weight", "value": "30" }, { "name": "Calories", "value": "250" } ] } ]'
SELECT i.id, i.fruit, v1.[value] AS Colour, v2.[value] AS Weight
FROM OPENJSON(@json)
WITH (
id int '$.id',
fruit nvarchar(50) '$.fruit',
[values] nvarchar(max) '$.values' AS JSON
) AS i
OUTER APPLY (
SELECT *
FROM OPENJSON(i.[values])
WITH (
[name] nvarchar(max) '$.name',
[value] nvarchar(max) '$.value'
)
WHERE [name] = 'Colour'
) v1
OUTER APPLY (
SELECT *
FROM OPENJSON(i.[values])
WITH (
[name] nvarchar(max) '$.name',
[value] nvarchar(max) '$.value'
)
WHERE [name] = 'Weight'
) v2
输出:
id fruit name value
1 orange Colour Orange
1 orange Weight 16
1 orange Calories 25
23 Banana Colour Yellow
23 Banana Weight 30
23 Banana Calories 250
id fruit Colour Weight
1 orange Orange 16
23 Banana Yellow 30
您可以尝试下一种方法,该方法将返回完整数据:
DECLARE @json nvarchar(max)
SET @json = N'[ { "id": 1, "fruit": "orange", "values": [ { "name": "Colour", "value": "Orange" }, { "name": "Weight", "value": "16" }, { "name": "Calories", "value": "25" } ] }, { "id": 23, "fruit": "Banana", "values": [ { "name": "Colour", "value": "Yellow" }, { "name": "Weight", "value": "30" }, { "name": "Calories", "value": "250" } ] } ]'
SELECT i.id, i.fruit, v.[name], v.[value]
FROM OPENJSON(@json)
WITH (
id int '$.id',
fruit nvarchar(50) '$.fruit',
[values] nvarchar(max) '$.values' AS JSON
) AS i
CROSS APPLY (
SELECT *
FROM OPENJSON(i.[values])
WITH (
[name] nvarchar(max) '$.name',
[value] nvarchar(max) '$.value'
)
) v
输出:
id fruit name value
1 orange Colour Orange
1 orange Weight 16
1 orange Calories 25
23 Banana Colour Yellow
23 Banana Weight 30
23 Banana Calories 250
id fruit Colour Weight
1 orange Orange 16
23 Banana Yellow 30
如果希望输出有关颜色和重量的信息,请尝试以下操作:
DECLARE @json nvarchar(max)
SET @json = N'[ { "id": 1, "fruit": "orange", "values": [ { "name": "Colour", "value": "Orange" }, { "name": "Weight", "value": "16" }, { "name": "Calories", "value": "25" } ] }, { "id": 23, "fruit": "Banana", "values": [ { "name": "Colour", "value": "Yellow" }, { "name": "Weight", "value": "30" }, { "name": "Calories", "value": "250" } ] } ]'
SELECT i.id, i.fruit, v1.[value] AS Colour, v2.[value] AS Weight
FROM OPENJSON(@json)
WITH (
id int '$.id',
fruit nvarchar(50) '$.fruit',
[values] nvarchar(max) '$.values' AS JSON
) AS i
OUTER APPLY (
SELECT *
FROM OPENJSON(i.[values])
WITH (
[name] nvarchar(max) '$.name',
[value] nvarchar(max) '$.value'
)
WHERE [name] = 'Colour'
) v1
OUTER APPLY (
SELECT *
FROM OPENJSON(i.[values])
WITH (
[name] nvarchar(max) '$.name',
[value] nvarchar(max) '$.value'
)
WHERE [name] = 'Weight'
) v2
输出:
id fruit name value
1 orange Colour Orange
1 orange Weight 16
1 orange Calories 25
23 Banana Colour Yellow
23 Banana Weight 30
23 Banana Calories 250
id fruit Colour Weight
1 orange Orange 16
23 Banana Yellow 30
非常感谢Zhorov,他正在阅读数据,但不是在我要找的结构中。有趣的方法-我会看看我是否能得到我想要的,直到a能提取出所需的结构。@Fetchezlavache更新了答案。非常感谢。我仍然不相信这是最好的方法,但它是有效的…@Fetchezlavache我已将
交叉应用
更改为外部应用
——如果你的JSON中没有颜色
或权重
。谢谢,这很有道理,谢谢。仍然在寻找替代方案,因为事实上,数据与水果无关,我有20多个名称/值对..:DMany谢谢Zhorov,这是在读取数据,但不是在我要找的结构中。有趣的方法-我会看看我是否能得到我想要的,直到a能提取出所需的结构。@Fetchezlavache更新了答案。非常感谢。我仍然不相信这是最好的方法,但它是有效的…@Fetchezlavache我已将交叉应用
更改为外部应用
——如果你的JSON中没有颜色
或权重
。谢谢,这很有道理,谢谢。仍然在寻找替代方案,因为事实上,数据与水果无关,我有20多个名称/值对..:D