Issue with the join expression in Access 2013 - tsql

Question

Given below is the sample of my code. When I tried to switch to the design view it gives me an error:
"Microsoft Access can't represent the join expression a.Course_name=b.Course_name in Design view".
When I searched this error on stackoverflow I found one post. According to the post the solution is given in this link (http://support.microsoft.com/kb/207868). According to this link, try to remove extra parenthesis (especially nested parenthesis) and problem will be resolved. However, in my query I don't have nested parenthesis. So I don't know how to fix it. Any help would be appreciated.
SELECT a.Course_name, COUNT(b.Student_code) AS [Total], Format(b.Retrieved_date,"mmmm yyyy") AS [Month]
FROM Course AS a LEFT JOIN (SELECT b.Course_name, b.Student_code, b.Retrieved_date FROM pending-enrolment AS b WHERE b.Retrieved_date BETWEEN [Forms]![ParameterForm]![txtBeginDate] AND [Forms]![ParameterForm]![txtEndDate]) b
ON a.Course_name=b.Course_name
GROUP BY a.Course_name, b.Retrieved_date
;

Answer 1

Try the following code (tested and works 100%):
SELECT Course.Course_name, Count(b.Student_code) AS CountOfStudent_code,
Format([b].[Retrieved_date],"mmmm yyyy") AS [Month]
FROM Course
LEFT JOIN
(
SELECT [pending-enrolment].Course_name, [pending-enrolment].Student_code,
[pending-enrolment].Retrieved_date
FROM [pending-enrolment]
WHERE ([pending-enrolment].Retrieved_date
Between [Forms]![ParameterForm]![txtBeginDate]
And [Forms]![ParameterForm]![txtEndDate])
) AS b ON Course.Course_name = b.Course_name
GROUP BY Course.Course_name, Format([b].[Retrieved_date],"mmmm yyyy");