比如有两个表:person_info person_skill
我现在想把person_skill里面computer字段的值全部导入到person_info的computer字段里。
如果是一对多,并且要加html代码,语句该如何写?我下面列个表说明一下:person_skill:
perid computer
88 熟练
88 非常熟练
88 非常非常熟练
89 很好
我希望的结果是:
person_info:
perid computer
88 熟练<br>非常熟练<br>非常非常熟练
89 很好注:person_info是我新建的表,而person_skill是我打算放弃的表,现在是想保存有用的资料,我只想在查询分析器里用sql语句实现,不希望在程序里编程去实现
我现在想把person_skill里面computer字段的值全部导入到person_info的computer字段里。
如果是一对多,并且要加html代码,语句该如何写?我下面列个表说明一下:person_skill:
perid computer
88 熟练
88 非常熟练
88 非常非常熟练
89 很好
我希望的结果是:
person_info:
perid computer
88 熟练<br>非常熟练<br>非常非常熟练
89 很好注:person_info是我新建的表,而person_skill是我打算放弃的表,现在是想保存有用的资料,我只想在查询分析器里用sql语句实现,不希望在程序里编程去实现
create table tbltest(列A int,列C varchar(100))
go
insert into tbltest
select 1,'A' union all
select 1,'B' union all
select 1,'C' union all
select 1,'F' union all
select 1,'G' union all
select 2,'E' union all
select 2,'F' union all
select 2,'F'
go--写一个聚合函数:
create function dbo.fn_Merge(@F1 int)
returns varchar(8000)
as
begin
declare @r varchar(8000)
set @r=''
select @r=@r+','+列C from tbltest where 列A=@F1 -- 先加逗号,再串起来
return stuff(@r,1,1,'') -- 删除最前面加的逗号
end
go-- 调用函数
select 列A, dbo.fn_Merge(列A) as 列C
from tbltest
group by 列A
go--删除测试数据
drop table tbltest
drop function fn_Merge--查看结果
/*
列A 列C
1 A,B,C,F,G
2 E,F,F
*/
returns varchar(8000)
as
begin
declare @str varchar(8000)
set @str = ''
select @str = @str+'<br>'+computer from person_skill where perid = @id
set @str = stuff(@str,1,4,'')
return @str
end select perid , dbo.rowtocol(perid) from person_skill group by perid
go
insert into person_skill
select 88,'熟练' union all
select 88,'非常熟练' union all
select 88,'非常非常熟练' union all
select 89,'很好'
go--写一个聚合函数:
create function dbo.fn_Merge(@F1 int)
returns varchar(8000)
as
begin
declare @r varchar(8000)
set @r=''
select @r=@r+'<br>'+computer from person_skill where perid=@F1 -- 先加逗号,再串起来
return stuff(@r,1,4,'') -- 删除最前面加的逗号
end
go-- 调用函数
select perid, dbo.fn_Merge(perid) as computer
from person_skill
group by perid
go--删除测试数据
drop table person_skill
drop function fn_Merge--查看结果
/*
perid computer
88 熟练<br>非常熟练<br>非常非常熟练
89 很好
*/
go
insert into person_skill
select 88,'熟练' union all
select 88,'非常熟练' union all
select 88,'非常非常熟练' union all
select 89,'很好'
gocreate table person_info(perid int,computer varchar(100))
go--写一个聚合函数:
create function dbo.fn_Merge(@F1 int)
returns varchar(8000)
as
begin
declare @r varchar(8000)
set @r=''
select @r=@r+'<br>'+computer from person_skill where perid=@F1
return stuff(@r,1,4,'')
end
go-- 调用函数并插入新表
insert person_info
select perid, dbo.fn_Merge(perid) as computer
from person_skill
group by perid
go--查看结果
select * from person_info--删除测试数据
drop table person_skill
drop table person_info
drop function fn_Merge--结果
/*
perid computer
88 熟练<br>非常熟练<br>非常非常熟练
89 很好
*/
go
insert person_skill
select 88,'1'
union
select 88,'2'
union
select 88,'3'
union
select 89,'4' create function rowtocol(@id varchar(10))
returns varchar(8000)
as
begin
declare @str varchar(8000)
set @str = ''
select @str = @str+'<br>'+computer from person_skill where perid = @id
set @str = stuff(@str,1,4,'')
return @str
end select perid , dbo.rowtocol(perid) from person_skill group by perid
select perid , dbo.rowtocol(perid) from person_skill group by perid
create table person_skill(perid int,computer varchar(1000))
insert person_skill select 88,'熟练'
insert person_skill select 88,'非常熟练'
insert person_skill select 88,'非常非常熟练'
insert person_skill select 89,'很好'
goselect * into #t from person_skill
declare @computer varchar(1000)
declare @perid varchar(1000)
update #t set @computer=case when perid=@perid then @computer+'<br>'+computer else computer end,@perid=perid,computer=@computer
select perid, max(computer) as computer into person_info from #t group by perid
select * from person_infodrop table person_skill,#t,person_info
perid computer
88 熟练<br>非常熟练<br>非常非常熟练
89 很好