i am not a MS SQL user, but as i have seen the link you posted. its all explained there. All you need is to create a function by copy pasting that code.
//Function From the Link Given in Question
CREATE FUNCTION [dbo].[udf_StripHTML]
(@HTMLText VARCHAR(MAX))
RETURNS VARCHAR(MAX)
AS
BEGIN
DECLARE @Start INT
DECLARE @End INT
DECLARE @Length INT
SET @Start = CHARINDEX('<',@HTMLText)
SET @End = CHARINDEX('>',@HTMLText,CHARINDEX('<',@HTMLText))
SET @Length = (@End - @Start) + 1
WHILE @Start > 0
AND @End > 0
AND @Length > 0
BEGIN
SET @HTMLText = STUFF(@HTMLText,@Start,@Length,'')
SET @Start = CHARINDEX('<',@HTMLText)
SET @End = CHARINDEX('>',@HTMLText,CHARINDEX('<',@HTMLText))
SET @Length = (@End - @Start) + 1
END
RETURN LTRIM(RTRIM(@HTMLText))
END
GO
and i guess you can use query like this using the function above.
select * from table where dbo.udf_StripHTML(Content1) like ‘%Hello%’
im not sure about the above query, but i think it would be something like that. However the above function defined, just try to use in query, may be it solves your problem.
strip_tags()function.