sql ntext数据类型字符替换实现代码

复制代码 代码如下:–为空的值text ntext
select * from lf_newsNg_utf where datalength(newsContentE)=0 or
datalength(newsContentE) is null

代码原网站:

复制代码 代码如下:
—ntext数据类型字符替换 create table tt ( sid INT IDENTITY(1,1), cont
ntext ) go insert into tt(cont) values(N’fd sad fdsa 涂聚文工团
缔友计算机信息技术有限公司 可能性 桔柑 ‘) go update tt set cont=’fd sad
fdsa 涂聚文工团 可能性 缔友计算机信息技术有限公司 桔柑 ‘ where sid=1
–去空格 EXEC sp_澳门金沙vip,dboption ‘pubs’, ‘select into/bulkcopy’, ‘true’
–sp_dboption ‘pubs’, ‘select into/bulkcopy’, ‘true’ GO DECLARE @ptrval
binary(16),@i int,@k int,@f int select @i=datalength(cont) from tt where
sid=1 set @k=1 while @i1 begin select @f=CHARINDEX(SPACE(1),cont) from
tt where sid=1 —SPACE(1) set @f=@f-1 SELECT @ptrval = TEXTPTR(cont)
FROM tt WHERE sid=1 if @f0 UPDATETEXT tt.cont @ptrval @f 1 null if @k=@i
break else set @k=@k+1 continue end GO –sp_dboption ‘pubs’, ‘select
into/bulkcopy’, ‘false’ EXEC sp_dboption ‘pubs’, ‘select
into/bulkcopy’, ‘false’ GO SELECT * FROM tt —换英文字母 EXEC
sp_dboption ‘pubs’, ‘select into/bulkcopy’, ‘true’ GO DECLARE @ptrval
binary(16),@i int,@k int,@f int select @i=datalength(cont) from tt where
sid=1 set @k=1 while @i1 begin select @f=CHARINDEX(‘sad’,cont) from tt
where sid=1 —SPACE(1) set @f=@f-1 SELECT @ptrval = TEXTPTR(cont) FROM
tt WHERE sid=1 if @f0 UPDATETEXT tt.cont @ptrval @f 3 ‘ggg’ if @k=@i
break else set @k=@k+1 continue end GO SELECT * FROM tt —中文字母
EXEC sp_dboption ‘pubs’, ‘select into/bulkcopy’, ‘true’ GO DECLARE
@ptrval binary(16),@i int,@k int,@f int select @i=datalength(cont) from
tt where sid=1 set @k=1 while @i1 begin select
@f=CHARINDEX(‘涂聚文’,cont) from tt where sid=1 —SPACE(1) set @f=@f-1
SELECT @ptrval = TEXTPTR(cont) FROM tt WHERE sid=1 if @f0 UPDATETEXT
tt.cont @ptrval @f 6 ‘涂斯博’ if @k=@i break else set @k=@k+1 continue
end GO SELECT * FROM tt EXEC sp_dboption ‘pubs’, ‘select
into/bulkcopy’, ‘true’ GO DECLARE @ptrval binary(16),@i int,@k int,@f
int,@change nvarchar(20),@newstr nvarchar(20),@len int set
@change=N’sad’ –要替换的字符 –set @len=datalength(@change) set
@len=len(@change) set @newstr=N’ggg’ –替换成的字符 select
@i=datalength(cont) from tt where sid=1 set @k=1 while @i1 begin select
@f=CHARINDEX(@change,cont) from tt where sid=1 —SPACE(1) set @f=@f-1
SELECT @ptrval = TEXTPTR(cont) FROM tt WHERE sid=1 if @f0 UPDATETEXT
tt.cont @ptrval @f @len @newstr if @k=@i break else set @k=@k+1 continue
end GO SELECT * FROM tt EXEC sp_dboption ‘pubs’, ‘select
into/bulkcopy’, ‘true’ GO DECLARE @ptrval binary(16),@i int,@k int,@f
int,@change nvarchar(20),@newstr nvarchar(20),@len int set
@change=N’涂聚文’ –要替换的字符 –set @len=datalength(@change)
–用此会出错 set @len=len(@change) set @newstr=N’涂斯博’ –替换成的字符
select @i=datalength(cont) from tt where sid=1 set @k=1 while @i1 begin
select @f=CHARINDEX(@change,cont) from tt where sid=1 —SPACE(1) set
@f=@f-1 SELECT @ptrval = TEXTPTR(cont) FROM tt WHERE sid=1 if @f0
UPDATETEXT tt.cont @ptrval @f @len @newstr if @k=@i break else set
@k=@k+1 continue end GO SELECT * FROM tt update tt set cont=’fd sad
fdsa 涂聚文工团 可能性 缔友计算机信息技术有限公司 桔柑 ‘ where sid=1
select datalength(‘涂聚文’) select len(‘涂聚文’) select
datalength(‘sad’) select len(‘sad’) select len(SPACE(1)) EXEC
sp_dboption ‘pubs’, ‘select into/bulkcopy’, ‘true’ DECLARE @ptrval
binary(16),@i int,@k int,@f int,@change nvarchar(20),@newstr
nvarchar(20),@len int set @change=N’涂聚文’ –要替换的字符 –set
@len=datalength(@change) –用此会出错 set @len=len(@change) set
@newstr=N’涂斯博’ –替换成的字符 select @i=datalength(cont) from tt
where sid=1 set @k=1 while @i1 begin select @f=CHARINDEX(@change,cont)
from tt where sid=1 —SPACE(1) set @f=@f-1 SELECT @ptrval =
TEXTPTR(cont) FROM tt WHERE sid=1 if @f0 UPDATETEXT tt.cont @ptrval @f
@len @newstr if @k=@i break else set @k=@k+1 continue end GO EXEC
sp_dboption ‘pubs’, ‘select into/bulkcopy’, ‘true’ DECLARE @ptrval
binary(16),@i int,@k int,@f int,@change nvarchar(20),@newstr
nvarchar(20),@len int set @change=N’涂聚文’ –要替换的字符 –set
@len=datalength(@change) –用此会出错 set @len=len(@change) set
@newstr=N’涂斯博’ –替换成的字符 select @i=datalength(cont) from tt
where sid=1 set @k=1 while @i1 begin select @f=CHARINDEX(@change,cont)
from tt where sid=1 —SPACE(1) set @f=@f-1 SELECT @ptrval =
TEXTPTR(cont) FROM tt WHERE sid=1 if @f0 UPDATETEXT tt.cont @ptrval @f
@len @newstr if @k=@i break else set @k=@k+1 continue end GO