[MSSQL] 字串分割成Table

2011-04-10

8953
0
MSSQL
2011-04-13

實務上，SP常常會遇到前端傳入的條件參數，通常會是多個條件串起來的字串，所以會需要用到字串分割的UDF來方便判斷每個條件是否符合，請參考以下範例：


CREATE FUNCTION dbo.fnSplit(
    @sInputList VARCHAR(8000) -- List of delimited items
  , @sDelimiter VARCHAR(8000) = ',' -- delimiter that separates items
) RETURNS @List TABLE (item VARCHAR(8000))

BEGIN
DECLARE @sItem VARCHAR(8000)
WHILE CHARINDEX(@sDelimiter,@sInputList,0) <> 0
 BEGIN
 SELECT
  @sItem=RTRIM(LTRIM(SUBSTRING(@sInputList,1,CHARINDEX(@sDelimiter,@sInputList,0)-1))),
  @sInputList=RTRIM(LTRIM(SUBSTRING(@sInputList,CHARINDEX(@sDelimiter,@sInputList,0)+LEN(@sDelimiter),LEN(@sInputList))))
 
 IF LEN(@sItem) > 0
  INSERT INTO @List SELECT @sItem
 END

IF LEN(@sInputList) > 0
 INSERT INTO @List SELECT @sInputList -- Put the last item in
RETURN
END
GO


--測試語法
select * from fnSplit('1,22,333,444,,5555,666', ',')
select * from fnSplit('1##22#333##444','##')  --note second item has embedded #
select * from fnSplit('1 22 333 444  5555 666', ' ')

引用來源：http://www.eggheadcafe.com/community/aspnet/13/10021854/fnsplit.aspx

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