How to remove invisible characters in t-sql?

Question

I tried

UPDATE TABLENAME SET COLUMNNAME = REPLACE(COLUMNNAME, \'\\t\', \'\')

But I don\'t know how to write the TAB in t-sql

Answer 1

For TAB and ENTER

SELECT
    -- TRIM AND REPLACE `TAB` AND `ENTER`
    LTRIM(RTRIM(
        REPLACE(
            REPLACE(
                REPLACE(columnname, CHAR(9), ' '),
            CHAR(13), ' '),
        CHAR(10), ' ')
    ))