MSSQL: Left Trim and Right Trim Expression

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CREATE FUNCTION [dbo].[fx_ltrim] ( @Find VARCHAR(MAX), @Text VARCHAR(MAX) ) RETURNS VARCHAR(MAX) AS BEGIN DECLARE @loop BIT = 1 IF @Find = '' BEGIN RETURN @Text END WHILE @loop = 1 BEGIN IF LEFT(@Text, LEN(@Find)) = @Find BEGIN SET @Text = RIGHT(@Text, LEN(@Text) - LEN(@Find)) END ELSE BEGIN SET @loop = 0 END END RETURN @Text END CREATE FUNCTION [dbo].[fx_rtrim] ( @Find VARCHAR(MAX), @Text VARCHAR(MAX) ) RETURNS VARCHAR(MAX) AS BEGIN DECLARE @loop BIT = 1 IF @Find = '' BEGIN RETURN @Text END WHILE @loop = 1 BEGIN IF RIGHT(@Text, LEN(@Find)) = @Find BEGIN SET @Text = LEFT(@Text, LEN(@Text) - LEN(@Find)) END ELSE BEGIN SET @loop = 0 END END RETURN @Text END