Question

我有这个问题，表中有一个字符串列，里面的数据是混合但不变的。

例如

{ "Supervisor": "you", "Number_SAP": "33333333333", "SUPPORT_level":"on,NBD2222x5; KeepYourHardDrive-MultiDrive PCYourDriveYour", "SUPPORT_active": "1999-01-31", "SUPPORT_required":  false, "Power_Consumption":0, and many others}

它们在不同行中的排列方式不同，顺序可能不同，例如

{ "Power_Consumption": 4, "Number_SAP": "22222222222222", "SUPPORT_level": "OFF,ddd333222x5; MultiDrive", "SUPPORT_active": "2000-01-31","Supervisor": "ME", "SUPPORT_required": "True", and many others.}

如何仅将其想要的值分发到列，例如

列名：

<头>

功耗	SAP 否	支持
“Power_Consumption”：0	"Number_SAP": "3333333333333"	"SUPPORT_active": "1999-01-31"
“Power_Consumption”：4	"Number_SAP": "22222222222222"	"SUPPORT_active": "2000-01-31"

或

列名：

<头>

功耗	SAP 否	支持
0	3333333333333	1999-01-31
4	2222222222222	2000-01-31

解析没问题，但仅限于 4 个项目，但在我的情况下最多可以有 9 个项目。

Answer 1

存储的数据是有效的 JSON 内容，因此可能最合理的方法是使用 OPENJSON() 和显式架构解析数据（请注意，您至少需要 SQL Server 2016 才能使用此功能）：< /p>

SELECT j.*
FROM (VALUES
   ('{"Supervisor":"you","Number_SAP":"33333333333","SUPPORT_level":"on,NBD2222x5; KeepYourHardDrive-MultiDrive PCYourDriveYour","SUPPORT_active":"1999-01-31","SUPPORT_required":false,"Power_Consumption":0}'),
   ('{"Power_Consumption":4,"Number_SAP":"22222222222222","SUPPORT_level":"OFF,ddd333222x5; MultiDrive","SUPPORT_active":"2000-01-31","Supervisor":"ME","SUPPORT_required":"True"}')   
) d (Data)
OUTER APPLY OPENJSON(d.Data) WITH (
   [Power Consumption] int '$.Power_Consumption',
   [SAP No] varchar(20) '$.Number_SAP',
   [Support] varchar(10) '$.SUPPORT_active'
) j

结果：

<头>

功耗	SAP 否	支持
0	33333333333	1999-01-31
4	22222222222222	2000-01-31

Answer 2

SELECT top(10) Name, 
  JSON_VALUE( custom, '$.Power_Consumption') AS PostCode,
  JSON_VALUE( custom, '$.Number_SAP')  AS [SAP No],
  JSON_VALUE( custom, '$.SUPPORT_active') AS [Support]
FROM [dbo].[Data]

it works perfectly for me

@Venkataraman R thanks for guiding me to the right solution.

也许我的解决方案对某人也有用

SQL 将字符串拆分为列

2 个答案: