Sql Server字符串拆分(Split)方法汇总
时间：2021-07-01 10:21:17
帮助过：27人阅读
100),@sql varchar(
1000)
set @s=
‘1,2,3,4,5,6,7,8,9,10‘
set @sql=
‘select col=‘‘‘+ replace(@s,
‘,‘,
‘‘‘ union all select ‘‘‘)+
‘‘‘‘
PRINT @sql
exec (@sql)
--
方法1：循环截取法
if exists (
select *
from dbo.sysobjects
where id = object_id(N
‘[dbo].[f_splitSTR]‘) and xtype
in (N
‘FN‘, N
‘IF‘, N
‘TF‘))
drop function [dbo].[f_splitSTR]
GO
CREATE FUNCTION f_splitSTR(
@s varchar(8000), --
待分拆的字符串
@split varchar(10) --
数据分隔符
)RETURNS @re TABLE(col varchar(100))
AS
BEGIN
DECLARE @splitlen int
SET @splitlen=LEN(@split+
‘a‘)-
2
WHILE CHARINDEX(@split,@s)>
0
BEGIN
INSERT @re VALUES(LEFT(@s,CHARINDEX(@split,@s)-
1))
SET @s=STUFF(@s,
1,CHARINDEX(@split,@s)+@splitlen,
‘‘)
END
INSERT @re VALUES(@s)
RETURN
END
GO
--
方法2：使用临时性分拆辅助表法
if exists (
select *
from dbo.sysobjects
where id = object_id(N
‘[dbo].[f_splitSTR]‘) and xtype
in (N
‘FN‘, N
‘IF‘, N
‘TF‘))
drop function [dbo].[f_splitSTR]
GO
CREATE FUNCTION f_splitSTR(
@s varchar(8000), --
待分拆的字符串
@split varchar(10) --
数据分隔符
)RETURNS @re TABLE(col varchar(100))
AS
BEGIN
--
创建分拆处理的辅助表(用户定义函数中只能操作表变量)
DECLARE @t TABLE(ID int IDENTITY,b bit)
INSERT @t(b) SELECT TOP 8000 0 FROM syscolumns a,syscolumns b
INSERT @re SELECT SUBSTRING(@s,ID,CHARINDEX(@split,@s+@split,ID)-
ID)
FROM @t
WHERE ID<=LEN(@s+
‘a‘)
AND CHARINDEX(@split,@split+@s,ID)=
ID
RETURN
END
GO
--
方法3：使用永久性分拆辅助表法
if exists (
select *
from dbo.sysobjects
where id = object_id(N
‘[dbo].[f_splitSTR]‘) and xtype
in (N
‘FN‘, N
‘IF‘, N
‘TF‘))
drop function [dbo].[f_splitSTR]
GO
if exists (
select *
from dbo.sysobjects
where id = object_id(N
‘[dbo].[tb_splitSTR]‘) and objectproperty(id,N
‘IsUserTable‘)=
1)
drop table [dbo].[tb_splitSTR]
GO
--
字符串分拆辅助表
SELECT TOP 8000 ID=IDENTITY(
int,
1,
1) INTO dbo.tb_splitSTR
FROM syscolumns a,syscolumns b
GO
--
字符串分拆处理函数
CREATE FUNCTION f_splitSTR(
@s varchar(8000), --
待分拆的字符串
@split varchar(10) --
数据分隔符
)RETURNS TABLE
AS
RETURN(
SELECT col=CAST(SUBSTRING(@s,ID,CHARINDEX(@split,@s+@split,ID)-ID)
as varchar(
100))
FROM tb_splitSTR
WHERE ID<=LEN(@s+
‘a‘)
AND CHARINDEX(@split,@split+@s,ID)=
ID)
GO
--
方法4：循环字符串分割
create FUNCTION [dbo].[Fun_SplitStr]
(
@originalStr VARCHAR(8000), --
要分割的字符串
@split varchar(100) --
分隔符号
)
RETURNS @temp TABLE(Result VARCHAR(100))
AS
BEGIN
DECLARE @result AS VARCHAR(100); --
定义变量用于接收单个结果
SET @originalStr = @originalStr +
@split ;
WHILE (@originalStr <>
‘‘)
BEGIN
SET @result = LEFT(@originalStr, CHARINDEX(@split, @originalStr,
1) -
1) ;
INSERT @temp VALUES(@result) ;
--
STUFF()函数用于删除指定长度的字符，并可以在指定的起点处插入另一组字符。
SET @originalStr = STUFF(@originalStr,
1, CHARINDEX(@split, @originalStr,
1),
‘‘);
END
RETURN
END
--
方法5：利用sql server2005的OUTER APPLY
CREATE FUNCTION [dbo].[ufn_SplitStringToTable]
(
@str VARCHAR(MAX) ,
@split VARCHAR(10)
)
RETURNS TABLE
AS
RETURN
( SELECT B.id
FROM ( SELECT [value] = CONVERT(XML ,
‘<v>‘ + REPLACE(@str , @split ,
‘</v><v>‘)
+
‘</v>‘)
) A
OUTER APPLY ( SELECT id = N.v.value(
‘.‘ ,
‘varchar(100)‘)
FROM A.[value].nodes(‘/v‘) N ( v )
) B
)
Sql Server字符串拆分(Split)方法汇总
标签：sql turn charindex and 数据 用户 cas 动态sql ota
