sql 数字全角半角转换
create FUNCTION dbo.ConvertWordAngle (
@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
begin
SELECT @pat=N'%[!-~]%',@step=-65248, @str=REPLACE(@str,N' ',N' ') ;
end
ELSE
begin
SELECT @pat=N'%[!-~]%',@step=65248, @str=REPLACE(@str,N' ',N' ')
end 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
调用方式: select dbo.ConvertWordAngle('W19691003',0);