Prova detta.
CREATE FUNCTION STR_Func (@Str AS VARCHAR(100))
RETURNS VARCHAR(Max)
AS
BEGIN
DECLARE @count INT,
@tempstr VARCHAR(100)='',
@nLength INT,
@outstr VARCHAR(100)=''
SET @count=1
SET @Str = Replace(@Str, '/', '')
SET @nlength = Len(@Str)
WHILE ( @count < @nLength )
BEGIN
SET @[email protected] + Substring(@Str, 1, 1)
SET @Str=Replace(@Str, Substring(@Str, 1, 1), '')
SELECT @outstr = @outstr + RIGHT(@tempstr, 1) + '/'
SET @[email protected] + 1
END
RETURN LEFT(@outstr, Len(@outstr) - 1)
END
select dbo.STR_Func('B/A/C/A')
OUTPUT: B/A/C
Om du vill ta bort dubbletter och om du inte bryr dig om beställningen, försök detta.
DECLARE @code VARCHAR(100)='B/A/C/A',
@code1 VARCHAR(100)=''
SELECT @code1 += '/' + splitrow
FROM (SELECT DISTINCT Split.a.value('.', 'VARCHAR(100)') splitrow
FROM (SELECT Cast ('<M>' + Replace(@code, '/', '</M><M>') + '</M>' AS XML) AS Data) AS A
CROSS APPLY Data.nodes ('/M') AS Split(a)) b
SELECT RIGHT(@code1, Len(@code1) - 1)
OUTPUT :A/B/C