OTBI report for learner count, count of learner according to number of courses completed

Summary:

I have to create a report to get the count of learners who have completed more than 1 course and learners who have completed more than two courses. Also I need to fetch the total number of learners in the respective month.

I am creating a OTBI report for that.

I have created a logical SQL for that but thats not working

Can you please help in the logical SQL.

Please guide what I need to do.

Content (please ensure you mask any confidential information):

SELECT sum (B.saw_1),B.saw_2
FROM (
SELECT count (A.Person_Number) saw_1,A.Completion_Date saw_2,A.Course_Count saw_3