sql分割字符

[maybe723]

如果数据库中记录：

1 aaa 111,222,333 22,33,44 55,66,77
2 bbb 111,222 22,33 55,66
转为

1 aaa 111 22 55
1 aaa 222 33 66
1 aaa 333 44 77
2 bbb 111 22 55
2 bbb 222 33 66


如何写sql?

[zc_0101]

怪异的需求

[tim_spac]

create function dbo.fn_strSplit ( @arg varchar(8000) , @splitchar varchar(8) )
returns @tb table ( s varchar(64) ) as
begin
	declare @part varchar(64), @pos int
	set @pos = charindex(@splitchar, @arg)
	while @pos>=1 begin
		set @part = rtrim(left(@arg,@pos-1))
		set @arg = stuff(@arg,1,@pos+len(@splitchar),'')
		if @part>''
			insert into @tb values (@part)
		set @pos = charindex(@splitchar, @arg)
	end
	if @arg>''
		insert into @tb values (@arg)
	return
end

[--小F--]

--参考
拆分表:

--> --> (Roy)生成測試數據
 
if not object_id('Tab') is null
    drop table Tab
Go
Create table Tab([Col1] int,[COl2] nvarchar(5))
Insert Tab
select 1,N'a,b,c' union all
select 2,N'd,e' union all
select 3,N'f'
Go

SQL2000用辅助表:
if object_id('Tempdb..#Num') is not null
    drop table #Num
go
select top 100 ID=Identity(int,1,1) into #Num from syscolumns a,syscolumns b
Select 
    a.Col1,COl2=substring(a.Col2,b.ID,charindex(',',a.Col2+',',b.ID)-b.ID) 
from 
    Tab a,#Num b
where
    charindex(',',','+a.Col2,b.ID)=b.ID --也可用 substring(','+a.COl2,b.ID,1)=','


SQL2005用Xml:

select 
    a.COl1,b.Col2
from 
    (select Col1,COl2=convert(xml,'<root><v>'+replace(COl2,',','</v><v>')+'</v></root>') from Tab)a
outer apply
    (select Col2=C.v.value('.','nvarchar(100)') from a.COl2.nodes('/root/v')C(v))b




SQL05用CTE:

;with roy as 
(select Col1,COl2=cast(left(Col2,charindex(',',Col2+',')-1) as nvarchar(100)),Split=cast(stuff(COl2+',',1,charindex(',',Col2+','),'') as nvarchar(100)) from Tab
union all
select Col1,COl2=cast(left(Split,charindex(',',Split)-1) as nvarchar(100)),Split= cast(stuff(Split,1,charindex(',',Split),'') as nvarchar(100)) from Roy where split>''
)
select COl1,COl2 from roy order by COl1 option (MAXRECURSION 0)

生成结果:
/*
Col1        COl2
----------- -----
1           a
1           b
1           c
2           d
2           e
3           f
*/

[feixianxxx]

友难度。。

[--小F--]

----------------------------------------------------------------
-- Author :fredrickhu(小F 向高手学习)
-- Date   :2009-07-16 20:13:25
----------------------------------------------------------------
--> 测试数据：[tb]
if object_id('[tb]') is not null drop table [tb]
create table [tb]([col1] int,[col2] varchar(3),[col3] varchar(11),[col4] varchar(8),[col5] varchar(8))
insert [tb]
select 1,'aaa','111,222,333','22,33,44','55,66,77' union all
select 2,'bbb','111,222','22,33','55,66'
--------------开始查询--------------------------
if object_id('Tempdb..#Num') is not null
    drop table #Num
go
select top 100 ID=Identity(int,1,1) into #Num from syscolumns a,syscolumns b
Select 
    a.Col1,a.col2,
    COl3=substring(a.Col3,b.ID,charindex(',',a.Col3+',',b.ID)-b.ID),
    col4=substring(a.Col4,b.ID,charindex(',',a.Col4+',',b.ID)-b.ID),
    col5=substring(a.Col5,b.ID,charindex(',',a.Col5+',',b.ID)-b.ID)
from 
    tb a,#Num b
where
    charindex(',',','+a.Col3,b.ID)=b.ID

----------------结果----------------------------
/*Col1        col2 COl3        col4     col5
----------- ---- ----------- -------- --------
1           aaa  111         22       55
1           aaa  222         3        6
1           aaa  333                  
2           bbb  111         22       55
2           bbb  222         3        6

(5 行受影响)
*/

[--小F--]

[Quote=引用 5 楼 fredrickhu 的回复:]
SQL code----------------------------------------------------------------
-- Author :fredrickhu(小F 向高手学习)
-- Date :2009-07-16 20:13:25
----------------------------------------------------------------¡­
[/Quote]
...错误了 楼主自己对照着修改下

[ChinaJiaBing]

如果数据库中记录：

1 aaa 111,222,333 22,33,44 55,66,77
2 bbb 111,222 22,33 55,66
转为

1 aaa 111 22 55
1 aaa 222 33 66
1 aaa 333 44 77
2 bbb 111 22 55
2 bbb 222 33 66


如何写sql?

数据库要加粘贴,复制功能...