SQL语句的执行~~~~~~~在线等！！！！！！！
一个表中仅有一个字段（一行一列），内容如下：
2012082022110036,2012082022110037,2012082022110038,2012082022110039,2012082022110040
想通过SQL语句得到以下结果：
2012082022110036
2012082022110037
2012082022110038
2012082022110039
2012082022110040
（五行一列）
有没有什么好办法？？
注：每个字符串的长度一样
[解决办法]
declare @three table(yh varchar(200))insert into @threeselect'2012082022110036,2012082022110037,2012082022110038,2012082022110039,2012082022110040'select substring(','+a.yh,b.number+1,charindex(',',a.yh+',',b.number)-b.number) 'yh'from @three ainner join master.dbo.spt_values bon b.[type]='P' and substring(','+a.yh,b.number,1)=','/*yh20120820221100362012082022110037201208202211003820120820221100392012082022110040*/
[解决办法]
if object_id('test') is not null drop table testgocreate table test(f1 varchar(20))goinsert into testselect '2012082022110036' union allselect '2012082022110037' union allselect '2012082022110038' union allselect '2012082022110039' union allselect '2012082022110040'go--sql server 2000declare @str varchar(200)select @str=isnull(@str+',','')+f1 from test select @str--sql server 2005以后版本 select stuff(','+f1,1,1,'') from test for xml path('')
[解决办法]
--> 测试数据：[tb]IF OBJECT_ID('[tb]') IS NOT NULL DROP TABLE [tb]GO CREATE TABLE [tb]([name] VARCHAR(800))INSERT [tb]SELECT '2012082022110036,2012082022110037,2012082022110038,2012082022110039,2012082022110040' UNION ALLSELECT '2012082022110041,2012082022110042,2012082022110043,2012082022110044,2012082022110045'--------------开始查询--------------------------SELECT T.c.value('.', 'sysname') AS NAME FROM (SELECT CONVERT(XML,'<x>'+REPLACE([name],',','</x><x>')+'</x>') AS [name] FROM [tb]) A CROSS APPLY A.name.nodes('/x/text()') T(c)/*NAME--------------------------------------------------------2012082022110036201208202211003720120820221100382012082022110039201208202211004020120820221100412012082022110042201208202211004320120820221100442012082022110045(10 行受影响)*/
[解决办法]
/****************************************************************************************************************************************************** 合并分拆表数据 整理人：中国风(Roy) 日期:2008.06.06 ******************************************************************************************************************************************************/ --> --> (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(1)) Insert Tab select 1,N'a' union all select 1,N'b' union all select 1,N'c' union all select 2,N'd' union all select 2,N'e' union all select 3,N'f' Go 合并表: SQL2000用函数: go if object_id('F_Str') is not null drop function F_Str go create function F_Str(@Col1 int) returns nvarchar(100) as begin declare @S nvarchar(100) select @S=isnull(@S+',','')+Col2 from Tab where Col1=@Col1 return @S end go Select distinct Col1,Col2=dbo.F_Str(Col1) from Tab go SQL2005用XML: 方法1: select a.Col1,Col2=stuff(b.Col2.value('/R[1]','nvarchar(max)'),1,1,'') from (select distinct COl1 from Tab) a Cross apply (select COl2=(select N','+Col2 from Tab where Col1=a.COl1 For XML PATH(''), ROOT('R'), TYPE))b 方法2: select a.Col1,COl2=replace(b.Col2.value('/Tab[1]','nvarchar(max)'),char(44)+char(32),char(44)) from (select distinct COl1 from Tab) a cross apply (select Col2=(select COl2 from Tab where COl1=a.COl1 FOR XML AUTO, TYPE) .query(' <Tab> {for $i in /Tab[position() <last()]/@COl2 return concat(string($i),",")} {concat("",string(/Tab[last()]/@COl2))} </Tab>') )b SQL05用CTE: ;with roy as(select Col1,Col2,row=row_number()over(partition by COl1 order by COl1) from Tab) ,Roy2 as (select COl1,cast(COl2 as nvarchar(100))COl2,row from Roy where row=1 union all select a.Col1,cast(b.COl2+','+a.COl2 as nvarchar(100)),a.row from Roy a join Roy2 b on a.COl1=b.COl1 and a.row=b.row+1) select Col1,Col2 from Roy2 a where row=(select max(row) from roy where Col1=a.COl1) order by Col1 option (MAXRECURSION 0) 生成结果: /* Col1 COl2 ----------- ------------ 1 a,b,c 2 d,e 3 f (3 行受影响) */ --参考拆分表:--> --> (Roy)生成測試數據 if not object_id('Tab') is null drop table TabGoCreate table Tab([Col1] int,[COl2] nvarchar(5))Insert Tabselect 1,N'a,b,c' union allselect 2,N'd,e' union allselect 3,N'f'Go--SQL2000用辅助表:if object_id('Tempdb..#Num') is not null drop table #Numgoselect top 100 ID=Identity(int,1,1) into #Num from syscolumns a,syscolumns bSelect a.Col1,COl2=substring(a.Col2,b.ID,charindex(',',a.Col2+',',b.ID)-b.ID) from Tab a,#Num bwhere charindex(',',','+a.Col2,b.ID)=b.ID --也可用 substring(','+a.COl2,b.ID,1)=','--2000不使用辅助表Select a.Col1,COl2=substring(a.Col2,b.number,charindex(',',a.Col2+',',b.number)-b.number) from Tab a join master..spt_values b ON B.type='p' AND B.number BETWEEN 1 AND LEN(A.col2)where substring(','+a.COl2,b.number,1)=','SQL2005用Xml:select a.COl1,b.Col2from (select Col1,COl2=convert(xml,'<root><v>'+replace(COl2,',','</v><v>')+'</v></root>') from Tab)aouter apply (select Col2=C.v.value('.','nvarchar(100)') from a.COl2.nodes('/root/v')C(v))bSQL05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 Tabunion allselect 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 a1 b1 c2 d2 e3 f*/