CREATE FUNCTION f_Convert(
@str NVARCHAR(4000), --要转换的字符串
@flag bit --转换标志,0转换成半角,1转换成全角
)RETURNS nvarchar(4000)
AS
BEGIN
DECLARE @pat nvarchar(8),@step int,@i int,@spc int
IF @flag=0
SELECT @pat=N'%[!-~]%',@step=-65248,
@str=REPLACE(@str,N' ',N' ')
ELSE
SELECT @pat=N'%[!-~]%',@step=65248,
@str=REPLACE(@str,N' ',N' ')
SET @i=PATINDEX(@pat COLLATE LATIN1_GENERAL_BIN,@str)
WHILE @i>0
SELECT @str=REPLACE(@str,
SUBSTRING(@str,@i,1),
NCHAR(UNICODE(SUBSTRING(@str,@i,1))+@step))
,@i=PATINDEX(@pat COLLATE LATIN1_GENERAL_BIN,@str)
RETURN(@str)
END
GO
--改列的数据全角为半角
declare T_cursor cursor local for
select
a.Name, b.Name
from
sysobjects a
join
syscolumns b on a.ID=b.ID
join
systypes c on c.xusertype=b.Xtype
where
a.xtype='U' and c.Name in('nvarchar','nchar','varchar','char')
declare @tabName sysname,@ColName sysname
open T_cursor
fetch next from T_cursor into @tabName,@ColName
while @@fetch_status=0
begin
exec('update '+@tabName+' set '+@ColName+'=dbo.f_Convert('+@ColName+',0) where PATINDEX(N''%[!-~]%'' COLLATE LATIN1_GENERAL_BIN'+','+@ColName+')>0')--少了)
fetch next from T_cursor into @tabName,@ColName
end
close T_cursor
deallocate T_cursor
go
--改列名全角为半角
declare T_cursor cursor local for
select
a.Name, b.Name
from
sysobjects a
join
syscolumns b on a.ID=b.ID
where
a.xtype='U' and PATINDEX(N'%[!-~]%' COLLATE LATIN1_GENERAL_BIN,b.Name)>0
declare @tabName sysname,@ColName sysname
open T_cursor
fetch next from T_cursor into @tabName,@ColName
while @@fetch_status=0
begin
exec('exe sp_rename '''+@tabName+'.'+@ColName+''',''dbo.f_Convert('+@ColName+',0)''')
fetch next from T_cursor into @tabName,@ColName
end
close T_cursor
deallocate T_cursor