-- =============================================
-- Description: TRIMs a string 'for real' - removes standard whitespace from ends,
-- and replaces ASCII-char's 9-13, which are tab, line-feed, vert tab,
-- form-feed, & carriage-return (respectively), with a whitespace
-- (and then trims that off if it's still at the beginning or end, of course).
-- =============================================
CREATE FUNCTION [fn_CleanAndTrim] (
@Str nvarchar(max)
)
RETURNS nvarchar(max) AS
BEGIN
DECLARE @Result nvarchar(max)
SET @Result = LTRIM(RTRIM(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(
LTRIM(RTRIM(@Str)), CHAR(9), ' '), CHAR(10), ' '), CHAR(11), ' '), CHAR(12), ' '), CHAR(13), ' ')))
RETURN @Result
END
干杯!
< p > 另一个免责声明:
你典型的Windows换行符是CR+LF,所以如果你的字符串包含这些,你最终会用“双”空格替换它们
< p > 2016 < / em > < em >更新:
一个新版本,让你可以选择用你选择的其他字符替换那些特殊的空白字符!这还包括注释和Windows CR+LF配对的变通方法,即用单个替换替换特定的char-pair
IF OBJECT_ID('dbo.fn_CleanAndTrim') IS NULL
EXEC ('CREATE FUNCTION dbo.fn_CleanAndTrim () RETURNS INT AS BEGIN RETURN 0 END')
GO
-- =============================================
-- Author: Nate Johnson
-- Source: http://stackoverflow.com/posts/24068265
-- Description: TRIMs a string 'for real' - removes standard whitespace from ends,
-- and replaces ASCII-char's 9-13, which are tab, line-feed, vert tab, form-feed,
-- & carriage-return (respectively), with a whitespace or specified character(s).
-- Option "@PurgeReplaceCharsAtEnds" determines whether or not to remove extra head/tail
-- replacement-chars from the string after doing the initial replacements.
-- This is only truly useful if you're replacing the special-chars with something
-- **OTHER** than a space, because plain LTRIM/RTRIM will have already removed those.
-- =============================================
ALTER FUNCTION dbo.[fn_CleanAndTrim] (
@Str NVARCHAR(MAX)
, @ReplaceTabWith NVARCHAR(5) = ' '
, @ReplaceNewlineWith NVARCHAR(5) = ' '
, @PurgeReplaceCharsAtEnds BIT = 1
)
RETURNS NVARCHAR(MAX) AS
BEGIN
DECLARE @Result NVARCHAR(MAX)
--The main work (trim & initial replacements)
SET @Result = LTRIM(RTRIM(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(
LTRIM(RTRIM(@Str)) --Basic trim
, NCHAR(9), @ReplaceTabWith), NCHAR(11), @ReplaceTabWith) --Replace tab & vertical-tab
, (NCHAR(13) + NCHAR(10)), @ReplaceNewlineWith) --Replace "Windows" linebreak (CR+LF)
, NCHAR(10), @ReplaceNewlineWith), NCHAR(12), @ReplaceNewlineWith), NCHAR(13), @ReplaceNewlineWith))) --Replace other newlines
--If asked to trim replacement-char's from the ends & they're not both whitespaces
IF (@PurgeReplaceCharsAtEnds = 1 AND NOT (@ReplaceTabWith = N' ' AND @ReplaceNewlineWith = N' '))
BEGIN
--Purge from head of string (beginning)
WHILE (LEFT(@Result, DATALENGTH(@ReplaceTabWith)/2) = @ReplaceTabWith)
SET @Result = SUBSTRING(@Result, DATALENGTH(@ReplaceTabWith)/2 + 1, DATALENGTH(@Result)/2)
WHILE (LEFT(@Result, DATALENGTH(@ReplaceNewlineWith)/2) = @ReplaceNewlineWith)
SET @Result = SUBSTRING(@Result, DATALENGTH(@ReplaceNewlineWith)/2 + 1, DATALENGTH(@Result)/2)
--Purge from tail of string (end)
WHILE (RIGHT(@Result, DATALENGTH(@ReplaceTabWith)/2) = @ReplaceTabWith)
SET @Result = SUBSTRING(@Result, 1, DATALENGTH(@Result)/2 - DATALENGTH(@ReplaceTabWith)/2)
WHILE (RIGHT(@Result, DATALENGTH(@ReplaceNewlineWith)/2) = @ReplaceNewlineWith)
SET @Result = SUBSTRING(@Result, 1, DATALENGTH(@Result)/2 - DATALENGTH(@ReplaceNewlineWith)/2)
END
RETURN @Result
END
GO
WHILE EXISTS
(SELECT * FROM @ReportSet WHERE
ASCII(right(addr_3,1)) = 10
OR ASCII(right(addr_3,1)) = 13
OR ASCII(right(addr_3,1)) = 32)
BEGIN
UPDATE @ReportSet
SET addr_3 = LEFT(addr_3,LEN(addr_3)-1)
WHERE
ASCII(right(addr_3,1)) = 10
OR ASCII(right(addr_3,1)) = 13
OR ASCII(right(addr_3,1)) = 32
END