我想实现一个功能,即向一张表中填入数据时,将其中一个字段自动分割保存至一个个表中:名称 路由 状态
AAAAA 11111/2,2222/3,3333/4 在用
我想在将路由字段中11111/2,2222/3,3333/4 得到【1111/2】【2222/3】【3333/4】
本身我有下面的表,即1111、2222、3333有相应的编号
地点编号 地点
1 1111
2 2222
3 3333
最终得到下面的表,判断输入数据的是否有记录,有就更新,没有就添加:地点编号 具体
1 2
2 3
3 4
AAAAA 11111/2,2222/3,3333/4 在用
我想在将路由字段中11111/2,2222/3,3333/4 得到【1111/2】【2222/3】【3333/4】
本身我有下面的表,即1111、2222、3333有相应的编号
地点编号 地点
1 1111
2 2222
3 3333
最终得到下面的表,判断输入数据的是否有记录,有就更新,没有就添加:地点编号 具体
1 2
2 3
3 4
select parsename(replace('11111/2,2222/3,3333/4',',','.'),2)
select parsename(replace('11111/2,2222/3,3333/4',',','.'),1)
/******************************************************************************************************************************************************
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 TabgoSQL2005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>')
)bSQL05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)
*/
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'
GoSQL2000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
*/
create function f_splitstr(@SourceSql varchar(8000),@StrSeprate varchar(10))
returns @temp table(F1 varchar(100))
as
begin
declare @i int
set @SourceSql=rtrim(ltrim(@SourceSql))
set @i=charindex(@StrSeprate,@SourceSql)
while @i>=1
begin
insert @temp values(left(@SourceSql,@i-1))
set @SourceSql=substring(@SourceSql,@i+1,len(@SourceSql)-@i)
set @i=charindex(@StrSeprate,@SourceSql)
end
if @SourceSql<>''
insert @temp values(@SourceSql)
return
end
go
--你的触发器脚本,或者干脆放在存储过程里也行
declare @sql varchar(100)
declare cur1 cursor for
--这里你要用变量将'11111/2,2222/3,3333/4'得到************
select F1 from dbo.f_splitstr('11111/2,2222/3,3333/4' ,',')
Open cur1
Fetch Next From cur1 Into @sql
While @@Fetch_Status = 0
Begin
if exists(select 1 from t1,t2 where t1.地点编号=t2.地点编号 and t1.地点=left(@sql,charindex('/',@sql)-1))
update t2 set t2.具体=right(@sql,len(@sql)-charindex('/',@sql)) from t1,t2 where t1.地点编号=t2.地点编号 and t1.地点=left(@sql,charindex('/',@sql)-1)
else
insert t2 select t1.地点编号,right(@sql,len(@sql)-charindex('/',@sql)) from t1 where t1.地点=left(@sql,charindex('/',@sql)-1)
Fetch Next From cur1 into @sql
End
Close cur1
Deallocate cur1
(
s char(40)
)
create table a
(
a char(40)
,b char(40)
)
insert a
select 1 ,1111
union select 2 ,2222
union select 3 , 3333
create trigger ins_s on s
for insert
as
if object_id('tempdb..#')is not null
drop table #select parsename(replace(s,',','.'),3) a into # from inserted
union all
select parsename(replace(s,',','.'),2) from s
union all
select parsename(replace(s,',','.'),1) from s
select right(rtrim(#.a),len(#.a)-charindex('/',#.a)) as 地点编号,a.a as 具体 from # inner join a on left(#.a,charindex('/',#.a)-1)=a.b
insert s select '11111/2,2222/3,3333/4'
(
s char(40)
)
create table a
(
a char(40)
,b char(40)
)
insert a
select 1 ,1111
union select 2 ,2222
union select 3 , 3333
create trigger ins_s on s
for insert
as
if object_id('tempdb..#')is not null
drop table # select parsename(replace(s,',','.'),3) a into # from inserted
union all
select parsename(replace(s,',','.'),2) from inserted
union all
select parsename(replace(s,',','.'),1) from inserted
select right(rtrim(#.a),len(#.a)-charindex('/',#.a)) as 地点编号,a.a as 具体 from # inner join a on left(#.a,charindex('/',#.a)-1)=a.b
insert s select '11111/2,2222/3,3333/4'