Trim spaces in string - LTRIM RTRIM not working

Question

I tried this code -

UPDATE Table
SET Name = RTRIM(LTRIM(Name))

Data type of Name is varchar(25)

None of the leading and t

Answer 1

It is a frequent occurrence that we must remove leading and trailing whitespaces from a string before additional processing or sending it to another layer in an application. We can’t always control how the data is entered. The data might come from another system, a data conversion, an old application, EDI, Excel, or from an application which had poor quality control. In some of those cases, a whitespace might not be entered or saved in the system as character 32 which is a whitespace entered in a keyboard. If that happens, SQL built in functions for trimming whitespaces do not work so it becomes necessary to replace the “other” whitespace characters with character 32. Then LTRIM and RTRIM will work as expected.

**Select [udfTrim](ColumnName) from Table**

**CREATE FUNCTION [dbo].[udfTrim] 
(
    @StringToClean as varchar(8000)
)**
RETURNS varchar(8000)
AS
BEGIN   
    --Replace all non printing whitespace characers with Characer 32 whitespace
    --NULL
    Set @StringToClean = Replace(@StringToClean,CHAR(0),CHAR(32));
    --Horizontal Tab
    Set @StringToClean = Replace(@StringToClean,CHAR(9),CHAR(32));
    --Line Feed
    Set @StringToClean = Replace(@StringToClean,CHAR(10),CHAR(32));
    --Vertical Tab
    Set @StringToClean = Replace(@StringToClean,CHAR(11),CHAR(32));
    --Form Feed
    Set @StringToClean = Replace(@StringToClean,CHAR(12),CHAR(32));
    --Carriage Return
    Set @StringToClean = Replace(@StringToClean,CHAR(13),CHAR(32));
    --Column Break
    Set @StringToClean = Replace(@StringToClean,CHAR(14),CHAR(32));
    --Non-breaking space
    Set @StringToClean = Replace(@StringToClean,CHAR(160),CHAR(32));

    Set @StringToClean = LTRIM(RTRIM(@StringToClean));
    Return @StringToClean
END