为Moodle课程注册用户SQL查询

Question

我无法编译SQL查询以查找在特定moodle课程中注册的用户数。

我使用过这个帖子的查询：SQL query for Courses Enrolment on Moodle

下面转载的查询未返回准确的结果：

SELECT DISTINCT u.id AS userid, c.id AS courseid
FROM mdl_user u
JOIN mdl_user_enrolments ue ON ue.userid = u.id
JOIN mdl_enrol e ON e.id = ue.enrolid
JOIN mdl_role_assignments ra ON ra.userid = u.id
JOIN mdl_context ct ON ct.id = ra.contextid AND ct.contextlevel = 50
JOIN mdl_course c ON c.id = ct.instanceid AND e.courseid = c.id
JOIN mdl_role r ON r.id = ra.roleid AND r.shortname = 'student'
WHERE e.status = 0 AND u.suspended = 0 AND u.deleted = 0
  AND (ue.timeend = 0 OR ue.timeend > NOW()) AND ue.status = 0

以下内容为我提供了正确的数字，但从我所看到的内容看起来不正确（我使用的是3位用户的数据集）：

SELECT COUNT(*)

FROM mdl_course AS course 
JOIN mdl_enrol AS en ON en.courseid = course.id
JOIN mdl_user_enrolments AS ue ON ue.enrolid = en.id
JOIN mdl_user AS user2 ON ue.userid = user2.id

任何帮助都非常感激。

Answer 1

您可以通过调用accesslib.php文件中定义的 get_enrolled_users 来获取注册用户

您还可以使用 count_enrolled_users 方法