IM在SQL Server 2008中的工作,我想连接两个字符串,条件是SQL连接字符串
@str1 = 'A1,B1,C1'
@str2 = 'A2,B2,C2'
我想要的结果作为
@result = 'A1,A2,B1,B2,C1,C2'
请帮助...
IM在SQL Server 2008中的工作,我想连接两个字符串,条件是SQL连接字符串
@str1 = 'A1,B1,C1'
@str2 = 'A2,B2,C2'
我想要的结果作为
@result = 'A1,A2,B1,B2,C1,C2'
请帮助...
您存储数据的方式是非常糟糕的做法。不过这里是训练目的的解决方案:
DECLARE
@str1 varchar(30) = 'A1,B1,C1',
@str2 varchar(30) = 'A2,B2,C2',
@result varchar(60)
;WITH split as
(
SELECT t.c.value('.', 'VARCHAR(2000)') x
FROM (
SELECT x = CAST('<t>' +
REPLACE(@str1 + ',' + @str2, ',', '</t><t>') + '</t>' AS XML)
) a
CROSS APPLY x.nodes('/t') t(c)
)
SELECT
@result =
STUFF((
SELECT ',' + x
FROM split
ORDER BY x
for xml path(''), type
).value('.', 'varchar(max)'), 1, 1, '')
SELECT @result
结果:
A1,A2,B1,B2,C1,C2
首先创建一个拆分功能来让你的项目分开:
CREATE FUNCTION [dbo].[Split]
(
@String NVARCHAR(4000),
@Delimiter NCHAR(1)
)
RETURNS TABLE
AS
RETURN
(
WITH Split(stpos,endpos)
AS(
SELECT 0 AS stpos, CHARINDEX(@Delimiter,@String) AS endpos
UNION ALL
SELECT endpos+1, CHARINDEX(@Delimiter,@String,endpos+1)
FROM Split
WHERE endpos > 0
)
SELECT 'Id' = ROW_NUMBER() OVER (ORDER BY (SELECT 1)),
'Data' = SUBSTRING(@String,stpos,COALESCE(NULLIF(endpos,0),LEN(@String)+1)-stpos)
FROM Split
)
GO
现在你可以先拆分再和订购您的结果,然后CONCAT值
DECLARE @DelimitedString NVARCHAR(128)
SET @DelimitedString = @str1 + ',' + @str2
SELECT @result = COALESCE(@result + ',', '') +Data
FROM (SELECT Data
FROM dbo.Split(@DelimitedString, ',')
ORDER BY Data)
SET @result = @str1 + ',' + @str2
SELECT @result
更新1
我认为最好的办法将是首先得到充分的字符串,然后用逗号分割它,然后将其存储在临时表中,然后进行排序,可能是一个好主意。
CREATE FUNCTION SplitString
(
@Input NVARCHAR(MAX),
@Character CHAR(1)
)
RETURNS @Output TABLE (
Item NVARCHAR(1000)
)
AS
BEGIN
DECLARE @StartIndex INT, @EndIndex INT
SET @StartIndex = 1
IF SUBSTRING(@Input, LEN(@Input) - 1, LEN(@Input)) <> @Character
BEGIN
SET @Input = @Input + @Character
END
WHILE CHARINDEX(@Character, @Input) > 0
BEGIN
SET @EndIndex = CHARINDEX(@Character, @Input)
INSERT INTO @Output(Item)
SELECT SUBSTRING(@Input, @StartIndex, @EndIndex - 1)
SET @Input = SUBSTRING(@Input, @EndIndex + 1, LEN(@Input))
END
RETURN
END
GO
SELECT Item FROM
dbo.SplitString(@result,',') ORDER BY Item
我想要这种格式'A1,A2,B1,B2,C1,C2' – user2695128
@ user2695128请检查我的更新 – Hemal
尝试:
SELECT stuff((SELECT ',' + T.str FROM
(SELECT
PARSENAME(REPLACE(@str1,',','.'),1) str UNION ALL
PARSENAME(REPLACE(@str1,',','.'),2) str UNION ALL
PARSENAME(REPLACE(@str1,',','.'),3) str UNION ALL
PARSENAME(REPLACE(@str2,',','.'),1) str UNION ALL
PARSENAME(REPLACE(@str2,',','.'),2) str UNION ALL
PARSENAME(REPLACE(@str2,',','.'),3) str)T
ORDER BY T.str
FOR XML PATH('')),1,1,'')
非常感谢你.....这工作正常 – user2695128
@ user2695128:欢迎,如果它是为你工作,你可以把它标记为答案 –
'设置@result = @ STR1 + '' + @ str2' –
我想要'A1,A2,B1,B2,C1,C2'...与你的答案一样,将会产生像'A1,B1,C1,A2,B2,C2' – user2695128
你必须使用splitter功能来做到这一点。 Google s * ql服务器拆分字符串* –