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请教各位大大?如何将
'01,02,03,04' 转换为1列的结果集
01
02
03
04
/* 拆分字符串
* */
--拆分单列+序号
--方法一:利用数字辅助表
if object_id('fn_SplitTSQL')is not null drop function fn_SplitTSQL
GO
create FUNCTION dbo.fn_SplitTSQL
(@s NVARCHAR(MAX), @split NCHAR(1)) RETURNS TABLE
AS
RETURN
SELECT
n - LEN(REPLACE(LEFT(array, n), @split, '')) + 1 AS rn,
SUBSTRING(array, n,
CHARINDEX(@split, array + @split, n) - n) AS col
FROM (SELECT @s AS array) AS D
JOIN dbo.Nums
ON n <= LEN(array)
AND SUBSTRING(@split + array, n, 1) = @split;
GO
--方法二:直接拆分
if object_id('f_split')is not null drop function f_split
go
create function f_split
(
@s varchar(8000), --待分拆的字符串
@split varchar(10) --数据分隔符
)returns table
as
return
(
select Row_number()over(order by Number) rn ,
substring(@s,number,charindex(@split,@s+@split,number)-number)as col
from master..spt_values
where type='p' and number<=len(@s+'a')
and charindex(@split,@split+@s,number)=number
)
go
select * from dbo.f_split('11,2,3',',')
select * from dbo.fn_SplitTSQL('11,2,3',',')
GO
--拆分多列
if object_id('fn_MutiSplitTSQL')is not null drop function fn_MutiSplitTSQL
GO
create FUNCTION dbo.fn_MutiSplitTSQL
(@s NVARCHAR(MAX), @split NCHAR(1) ,@Sub@split NCHAR(1)= N',') RETURNS TABLE
AS
RETURN
select * from (SELECT d.rn ,'col'+ cast( n - LEN(REPLACE(LEFT(col, n), @Sub@split, '')) + 1 as varchar(10)) AS attribute,
SUBSTRING(col, n, CHARINDEX(@Sub@split, col + @Sub@split, n) - n) AS value
FROM ( SELECT n - LEN(REPLACE(LEFT(array, n), @split, '')) + 1 AS rn,
SUBSTRING(array, n, CHARINDEX(@split, array + @split, n) - n) AS col
FROM (SELECT @s AS array) AS D
JOIN dbo.Nums a
ON n <= LEN(array)
AND SUBSTRING(@split + array, n, 1) = @split ) AS D
JOIN dbo.Nums a
ON n <= LEN(col)
AND SUBSTRING(@Sub@split + col, n, 1) = @Sub@split ) as d
PIVOT(max(value) FOR attribute
IN(col1,col2 ,col3,col4,col5 )) AS P
GO
select col1,col2,col3,col4
from dbo.fn_MutiSplitTSQL
('$092-1350,099201-080901,12050720,2012-6-11$092-0970,099204-072301,12050734,2012-6-11$','$',',')
GO
ALTER function [dbo].[fnSys_SplitClass]
(
---字符串分割
@ClassSql varchar(max), --传入的字符串
@StrSeprate varchar(10)--分隔符
)
Returns @temp table(Class varchar(100)) --返回一个Table
As
Begin
Declare @i int
Set @ClassSql =rtrim(ltrim(@ClassSql ))
Set @i=charindex(@StrSeprate,@ClassSql )
While @i>=1
Begin
Insert @temp values(left(@ClassSql ,@i-1))
Set @ClassSql =substring(@ClassSql ,@i+1,len(@ClassSql )-@i)
Set @i=charindex(@StrSeprate,@ClassSql )
End
If @ClassSql <>''
Insert @temp values(@ClassSql )
Return
End
USE test
GO
DECLARE @s NVARCHAR(MAX),@Sql NVARCHAR(MAX)
SET @s='01,02,03,04'
SET @Sql='Select '''+REPLACE(@s,',',''' Union all Select ''')+''''
EXEC ( @Sql )
declare @s varchar(100)
set @s='01,02,03,04'
set @s=' select '''+replace(@s,',',''' as col union all select ''')+''''
exec (@s)