Does REPLACE function in SQL Server accept input from a table for 'string_pattern' parameter?

Question

I\'m still learning my ropes with SQL Server and maybe this question sounds very naive/ridiculous. Please bear with me on this. :)

I saw a function in SQL Server defined

Answer 1

A simple code to show you that the REPLACE can accept values from a table

CREATE TABLE dbo.Test
(
RowID INT IDENTITY(1,1),
Test VARCHAR(20)
)

GO

INSERT INTO dbo.Test VALUES ('James')
INSERT INTO dbo.Test VALUES ('John')

GO

ALTER FUNCTION [dbo].[fn_CleanNumeric]
    (
    @InputString VARCHAR(500),
    @Test VARCHAR(500)
    )
RETURNS TABLE
AS
RETURN(
 SELECT
        REPLACE(@InputString, n.Test, '') AS Test
    FROM 
        dbo.Test n WHERE Test = @Test)
GO

SELECT * FROM [dbo].[fn_CleanNumeric] ('TestJohn','John')

Result

Test
--------
TestT

The SELECT takes a random value and will check for that string pattern in the variable @InputString, thus passing a @Test variable ensures to REPLACE the right string pattern