I wanted to make it so the items i joing on, the db_user_id and the ad_user_id to be unique matches.Right now, if its JOE = JOE it works if its JOE = JOe it worksI want it to be case sensative any ideas on this?SELECT l.db_user_id,l.db_location,l.db_first_name,l.db_last_name,l.db_middle_name,l.db_status,l.db_school,l.db_school_type,r.ad_user_id,r.ad_location,r.ad_first_name,r.ad_last_name,r.ad_middle_name,r.ad_status,result = CASE WHEN l.db_user_id = r.ad_user_id AND l.db_location = r.ad_location AND l.db_first_name = r.ad_first_name AND l.db_last_name = r.ad_last_name AND l.db_status = r.ad_status AND l.db_middle_name = r.ad_middle_name THEN 0WHEN l.db_user_id = r.ad_user_id AND l.db_location <> r.ad_location OR l.db_first_name <> r.ad_first_name OR l.db_last_name <> r.ad_last_name OR l.db_middle_name <> r.ad_middle_name THEN 1WHEN r.ad_user_id IS NULL THEN 2WHEN l.db_user_id IS NULL THEN 3ENDFROM student_table_1 lFULL OUTER JOIN student_table_2 r ON l.db_user_id = r.ad_user_id