道德故事:不要使用SQL來做到這一點。 CLR和JSON包裝是要走的路。但如果你真的好奇,你可以做下面的事情。有太多的問題可能發生,很難全部列出。有關該主題的快速谷歌將輕鬆顯示原因。如果你能確保完美地完美形成JSON對象,這可能是你可以研究的東西。也許。不要使用這個。
/*
JSON to XML Parser TSQL
Compatibility: TEsted on SQL Server 2014
Assumptions: -Perfectly formed JSON as declared below.
-Charecters for formatting are ok but will be removed
*/
--Imagine @JSONDATA would be the parameter to your function
DECLARE @JSONDATA VARCHAR(MAX) = '{"transactions":[
{"TransacitonID":"transaction1","Success":true,"Response":"sample string 1","Values":"sample string 1"},
{"TransactionID":"transaction2","Success":false,"Response":"sample string 2","Values":"sample string 2"}
]}'
DECLARE @ObjectArrayNameStart INT
DECLARE @ObjectArrayNameEnd INT
DECLARE @ObjectArray VARCHAR(MAX)
DECLARE @ObjectArrayName VARCHAR(MAX)
DECLARE @ObjectArrayBracketStart INT
DECLARE @ObjectArrayBracketEnd INT
DECLARE @ObjectArraySingleton VARCHAR(MAX)
DECLARE @ObjectXML XML
--Replace All CR and LF charecters and HT chars
SET @JSONDATA = REPLACE(REPLACE(REPLACE(@JSONDATA,CHAR(10),''),CHAR(13),''),CHAR(9),'') --LF
--Get the ObjectArrayName
SELECT @ObjectArrayNameStart = PATINDEX('%{["]transactions["]:[[]%',@JSONDATA), @ObjectArrayNameEnd = PATINdEX('%[[]%',@JSONDATA)
SET @ObjectArrayName = SUBSTRING(@JSONDATA,@ObjectArrayNameStart,@ObjectArrayNameEnd)
--Get the ObjectArray name
SET @ObjectArray = REPLACE(@JSONDATA,@ObjectArrayName,'')
----Trim out the word of the object array and get the single word and singleton item
SET @ObjectArrayName = LEFT(@ObjectArrayName,@ObjectArrayNameEnd - 3)
SET @ObjectArrayName = RIGHT(@ObjectArrayName, LEN(@ObjectArrayName) - 2)
SET @ObjectArraySingleton = 'node'
--PREP THE JSON OBJECT DOWN TO INDIVIDUAL OBJECTS AND SET AS XML DOCUMENT
SET @ObjectArray = LTRIM(RTRIM(REPLACE(@ObjectArray,']}','')))
SET @ObjectArray = REPLACE(@ObjectArray,'},{','</' + @ObjectArraySingleton + '><' + @ObjectArraySingleton + '>')
SET @ObjectArray = REPLACE(@ObjectArray,'{','<' + @ObjectArraySingleton + '>')
SET @ObjectArray = REPLACE(@ObjectArray,'}','</' + @ObjectArraySingleton + '>')
SET @ObjectArray = '<root>' + @ObjectArray + '</root>'
SET @ObjectXML = CAST(@ObjectArray AS XML)
--Query for line data
;WITH XMLObjectData AS (
SELECT Item.value('text()[1]','nvarchar(max)') AS ObjectLine
FROM @ObjectXML.nodes('/root/node') AS Items(Item)
), CommaSplit AS (
SELECT '<pair><key>' + REPLACE(X.ObjectLine,',','</value></pair><pair><key>') + '</value></pair>' AS ObjectLine
FROM XMLObjectData AS X
), ColonSplit AS (
SELECT REPLACE(X.ObjectLine,':','</key><value>') AS ObjectLine
FROM CommaSplit AS X
), QuoteReplace AS (
SELECT REPLACE(X.ObjectLine,'"','') AS ObjectLine
FROM ColonSplit AS X
)
SELECT CAST(F.ObjectLine AS XML)
FROM QuoteReplace AS F
FOR XML PATH('object'), ROOT('root')
--COMMENTED OUT FOR TESTING
--SELECT @JSONDATA AS JSONData,
-- @ObjectArrayName AS ObjArrayName,
-- @ObjectArrayNameStart AS ObjArrayNameStart,
-- @ObjectArrayNameEnd AS ObjArrayNameEnd,
-- @ObjectArray AS ObjArray,
-- @ObjectArraySingleton AS ObjSingleton
-- --,CAST(@ObjectArray AS XML) AS XMLObjectArray
SQL Server當前沒有本機JSON支持,因此您必須將此列作爲字符串讀入例如C#,然後將JSON解析爲對象(使用JSON庫),然後進行處理。 SQL Server(從版本2005和更新版本)具有本機** XML **支持.... – 2015-02-24 15:48:11
謝謝@marc_s。所以我的另一個想法是在插入之前將其轉換爲XML。有沒有一種簡單的方法在VB(或C)中將JSON字符串轉換爲XML?也許這應該是一個完全不同的問題? – jharris8567 2015-02-24 15:52:19
我記得,有一個在C#中編寫存儲過程和/或函數的選項 - 它會很簡單:) – Gerino 2015-02-24 15:56:02