 
 CREATE FUNCTION idInt2Anon(intId int(11))
 RETURNS varchar(40)
+DETERMINISTIC
 BEGIN
     DECLARE anonId varchar(255);
     SELECT anon_screen_name


CREATE FUNCTION idAnon2Ext(the_anon_screen_name varchar(40)) 
RETURNS varchar(32)
BEGIN
      DECLARE ltiId varchar(255);
      SELECT DISTINCT lti_id INTO @ltiId


CREATE FUNCTION idForum2Int(forumId varchar(255))
RETURNS varchar(40)
DETERMINISTIC
BEGIN
    DECLARE theIntId INT;
    DECLARE anonId varchar(255);
