Hello,I'm still learning SQL Server 2005, and I've been given a task that requires me to write a query that shows all users who have not taken a training session called HPO. I know how to display users that have taken the training session, but I'm having trouble showing all of the active users who have not taken the session (HPO session). In other words, I want to write a query that shows all users/userids who have no taken the HPO. Can anyone please help me write this query.Here is my code so far, and thanks in advance.SELECT training, agency, years_attended, tid, firstname, lastname, mi, EDU, student, stu_program, ORG_CODE, ORG_NAME, ORG_ABBV, nickname, account, emailaddress, active, photo_path, POSITION_TITLE, GRADE, PP, POSITION_TYPE, TEN, DOB, SCD, SEX, HIREFY, yos, age, userid, isexternalFROM qTrainWHERE (training = 'HPO')