
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[p_split]') and OBJECTPROPERTY(id, N'IsProcedure') = 1)
drop procedure [dbo].[p_split]
GO
/*--Ntext字段拆分处理
按指定的分隔符,将 ntext 字段拆分成多条记录
注意:处理过程固定以名为id的int型字段为主键
如果不满足这个条件,则要对应的修改存储过程
--邹建 2004.07--*/
/*--调用示例
--测试数据
create table tb(id int identity(1,1),content ntext)
insert tb select '001,002'
union all select '001,002,003,004,005,006,007,008,009,010'
union all select replicate('001,002,003,004,005,006,007,008,009,010',8000)
--调用存储过程,进行拆分
exec p_split 'tb','content',',','id=3'
drop table tb
--*/

1
create proc p_split
2
@tbname sysname, --要处理的表名
3
@fdname sysname, --text/ntext字段名
4
@splitchar nvarchar(10)=',',--拆分的字符串分隔符
5
@where nvarchar(1000)=''--要处理的记录的条件
6
as
7
if isnull(@splitchar,'')='' set @splitchar=','
8![]()
9
declare @s nvarchar(4000)
10
set @s='
11
create table #t(id int identity(1,1),re nvarchar(50))
12
declare @id int,@ptr varbinary(16)
13
declare @s nvarchar(4000),@i int,@j int
14
declare @sp1 varchar(10),@step int
15![]()
16
select @sp1=reverse(@splitchar),@step=len(@splitchar)
17![]()
18
declare tb cursor local for
19
select id,s=substring(['+@fdname+'],1,4000)
20
from ['+@tbname+']
21
where datalength(['+@fdname+'])>0
22
'+case isnull(@where,'') when '' then ''
23
else ' and('+@where+')' end+'
24![]()
25
open tb
26
fetch tb into @id,@s
27
while @@fetch_status=0
28
begin
29
set @i=1
30
while @s<>''''
31
begin
32
if len(@s)=4000
33
select @j=4000-charindex(@sp1,reverse(@s))
34
,@i=@i+@j+@step
35
,@s=left(@s,@j)
36
else
37
select @i=@i+4000,@j=len(@s)
38
insert #t select substring(@s,id,charindex(@splitchar,@s+@splitchar,id)-id)
39
from 序数表
40
where id<=@j+@step and charindex(@splitchar,@splitchar+@s,id)-id=0
41
select @s=substring(['+@fdname+'],@i,4000)
42
from ['+@tbname+']
43
where id=@id
44
end
45![]()
46
fetch tb into @id,@s
47
end
48
close tb
49
deallocate tb
50
select * from #t
51
'
52
exec sp_executesql @s
53
,N'@splitchar nvarchar(10)'
54
,@splitchar
55
go
create proc p_split2
@tbname sysname, --要处理的表名3
@fdname sysname, --text/ntext字段名4
@splitchar nvarchar(10)=',',--拆分的字符串分隔符5
@where nvarchar(1000)=''--要处理的记录的条件6
as7
if isnull(@splitchar,'')='' set @splitchar=','8

9
declare @s nvarchar(4000)10
set @s='11
create table #t(id int identity(1,1),re nvarchar(50))12
declare @id int,@ptr varbinary(16)13
declare @s nvarchar(4000),@i int,@j int14
declare @sp1 varchar(10),@step int15

16
select @sp1=reverse(@splitchar),@step=len(@splitchar)17

18
declare tb cursor local for 19
select id,s=substring(['+@fdname+'],1,4000)20
from ['+@tbname+']21
where datalength(['+@fdname+'])>0 22
'+case isnull(@where,'') when '' then '' 23
else ' and('+@where+')' end+'24

25
open tb 26
fetch tb into @id,@s27
while @@fetch_status=028
begin29
set @i=130
while @s<>''''31
begin32
if len(@s)=400033
select @j=4000-charindex(@sp1,reverse(@s))34
,@i=@i+@j+@step35
,@s=left(@s,@j)36
else 37
select @i=@i+4000,@j=len(@s)38
insert #t select substring(@s,id,charindex(@splitchar,@s+@splitchar,id)-id)39
from 序数表40
where id<=@j+@step and charindex(@splitchar,@splitchar+@s,id)-id=041
select @s=substring(['+@fdname+'],@i,4000)42
from ['+@tbname+']43
where id=@id44
end45

46
fetch tb into @id,@s47
end48
close tb49
deallocate tb50
select * from #t51
'52
exec sp_executesql @s53
,N'@splitchar nvarchar(10)'54
,@splitchar55
go 1
create proc p_split@tbname sysname, --要处理的
2
表名@fdname sysname, --text/ntext字段名
3
@splitchar nvarchar(10)=',',--拆分的字符串分隔符
4
@where nvarchar(1000)=''--要处理的记录的条件asif
5
isnull(@splitchar,'')='' set @splitchar=','
6![]()
7
declare @s nvarchar(4000)set @s='create
8
table #t(id int identity(1,1),re nvarchar(50))
9
declare @id int,@ptr varbinary(16)
10
declare @s nvarchar(4000),@i int,@j
11
intdeclare @sp1 varchar(10),@step int
12![]()
13
select @sp1=reverse(@splitchar),@step=len(@splitchar)
14![]()
15
declare tb cursor local for
16
select id,s=substring(['+@fdname+'],1,4000)
17
from ['+@tbname+']where datalength(['+@fdname+'])>0 '+case isnull(@where,'')
18
when '' then '' else ' and('+@where+')' end+'
19![]()
20
open tb fetch tb into @id,@swhile
21
@@fetch_status=0begin set @i=1 while @s<>''''
22
begin
23
if len(@s)=4000
24
select @j=4000-charindex(@sp1,reverse(@s)) ,
25
@i=@i+@j+@step,
26
@s=left(@s,@j)
27
else
28
select @i=@i+4000,@j=len(@s)
29
insert #t select substring(@s,id,charindex(@splitchar,@s+@splitchar,id)-id)
30
from 序数表 where id<=@j+@step and charindex(@splitchar,@splitchar+@s,id)-id=0
31
select @s=substring(['+@fdname+'],@i,4000) from ['+@tbname+']
32
where id=@id
33
end
34![]()
35
fetch tb into @id,@sendclose tbdeallocate
36
tbselect * from #t'
37
exec sp_executesql @s ,N'@splitchar nvarchar(10)' ,@splitchargo
38![]()
create proc p_split@tbname sysname, --要处理的2
表名@fdname sysname, --text/ntext字段名3
@splitchar nvarchar(10)=',',--拆分的字符串分隔符4
@where nvarchar(1000)=''--要处理的记录的条件asif 5
isnull(@splitchar,'')='' set @splitchar=','6

7
declare @s nvarchar(4000)set @s='create 8
table #t(id int identity(1,1),re nvarchar(50))9
declare @id int,@ptr varbinary(16)10
declare @s nvarchar(4000),@i int,@j 11
intdeclare @sp1 varchar(10),@step int12

13
select @sp1=reverse(@splitchar),@step=len(@splitchar)14

15
declare tb cursor local for 16
select id,s=substring(['+@fdname+'],1,4000)17
from ['+@tbname+']where datalength(['+@fdname+'])>0 '+case isnull(@where,'') 18
when '' then '' else ' and('+@where+')' end+'19

20
open tb fetch tb into @id,@swhile 21
@@fetch_status=0begin set @i=1 while @s<>'''' 22
begin 23
if len(@s)=4000 24
select @j=4000-charindex(@sp1,reverse(@s)) ,25
@i=@i+@j+@step, 26
@s=left(@s,@j) 27
else 28
select @i=@i+4000,@j=len(@s) 29
insert #t select substring(@s,id,charindex(@splitchar,@s+@splitchar,id)-id) 30
from 序数表 where id<=@j+@step and charindex(@splitchar,@splitchar+@s,id)-id=0 31
select @s=substring(['+@fdname+'],@i,4000) from ['+@tbname+'] 32
where id=@id 33
end34

35
fetch tb into @id,@sendclose tbdeallocate 36
tbselect * from #t'37
exec sp_executesql @s ,N'@splitchar nvarchar(10)' ,@splitchargo38


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