Procedure to loop through comma separated string is not working

Question

I have corrected the code with the help of answer given in stack overflow. I want to loop through the comma separated string of Ids but not able to do so. Below given proced

Answer 1

I didn't find any suitable method, so I ended up making my own. It's pretty simple.

PROCEDURE db.loop_through_array()
BEGIN

  DECLARE strIDs varchar(150) DEFAULT 'one,two,three';
  DECLARE element varchar(150);

  WHILE strIDs != '' DO

    SET element = SUBSTRING_INDEX(strIDs, ',', 1);      

    UPDATE TestTable SET status = 'C' WHERE Id = element;

    IF LOCATE(',', strIDs) > 0 THEN
      SET strIDs = SUBSTRING(strIDs, LOCATE(',', strIDs) + 1);
    ELSE
      SET strIDs = '';
    END IF;

  END WHILE;

END