MOODLE SQL only return results where user is in same group student - moodle

Question

SELECT ra.id,
DATE_FORMAT(FROM_UNIXTIME(ra.timemodified),'%d-%m-%Y') AS Enrolment_Date,
c.fullname,
IFNULL(cmc.completed, 0) as 'Activities Completed',
u.firstname,
u.lastname,
DATE_FORMAT(FROM_UNIXTIME(cc.timecompleted),'%d-%m-%Y') AS complete_date,
CONCAT('<a target="_new" href="%%WWWROOT%%/user/profile.php?id=',ra.userid,'">', u.firstname, ' ', u.lastname, '</a>') AS Username
FROM prefix_role_assignments AS ra
JOIN prefix_user u ON ra.userid = u.id
JOIN prefix_context AS ctx ON ctx.id = ra.contextid
JOIN prefix_course c ON c.id = ctx.instanceid
JOIN prefix_enrol e ON e.courseid = c.id
JOIN prefix_user_enrolments ue ON ue.enrolid = e.id AND ue.userid = u.id
LEFT JOIN prefix_course_completions cc ON cc.course = c.id AND cc.userid = u.id
LEFT JOIN prefix_grade_items gi ON gi.courseid = c.id AND gi.itemtype = 'course'
LEFT JOIN prefix_grade_grades g ON g.itemid = gi.id AND g.userid =u.id
LEFT JOIN (SELECT cmc.userid, cm.course, COUNT(cmc.id) as completed FROM prefix_course_modules_completion cmc, prefix_course_modules cm WHERE cm.visible = 1 AND cmc.coursemoduleid = cm.id AND cmc.completionstate IN ('1','2') GROUP BY cm.course, cmc.userid) cmc ON cmc.course = c.id AND cmc.userid = u.id
WHERE u.id > 0 AND (c.id IN(
SELECT DISTINCT(ctx.instanceid) as id
FROM prefix_role_assignments ra JOIN prefix_context ctx ON ra.contextid = ctx.id
WHERE ra.userid = %%USERID%% AND ctx.contextlevel = 50 AND ra.roleid IN ('1','9','2','3','4','10'))
OR c.id IN(
SELECT distinct(c.id) as id FROM prefix_role_assignments ra
JOIN prefix_context ctx ON ra.contextid = ctx.id
JOIN prefix_course c ON c.category = ctx.instanceid
WHERE ra.userid = %%USERID%% AND ctx.contextlevel = 40 AND ra.roleid IN ('1','9','2','3','4','10'))
) AND u.deleted = 0 AND u.suspended = 0 AND u.username <> 'guest' AND c.visible = 1 AND ue.status = 0 AND e.status = 0 AND ra.roleid = '5'
GROUP BY ra.userid, ctx.instanceid HAVING u.firstname LIKE 'student' ESCAPE '\\'
Hi all,
Im struggling here, I cant seem to get how to only return results from the above query where the user running the query (%%USERID%%) shares the same groups as the student. This is a query cobbled together from a number of other queries and works perfectly except for that one thing.
Ive tried to tack on the following in various ways into this but cant get it to work at all
SELECT g.name, gm.groupid, u.firstname
FROM mdl_groups as g
JOIN mdl_groups_members as gm ON g.id = gm.groupid
JOIN mdl_user as u ON u.id = gm.userid AND u.id = 'student', %%USERID%%'
Any help at all even a point in the right direction would be great, this isnt my job role as such but Ive been tasked to make something like this happen.
Thanks for reading

Answer 1

It seems that the subquery boils down to just some userids, but this needs to return rows.
SELECT DISTINCT
gms.userid
FROM mdl_groups_members gms
INNER JOIN mdl_groups_members AS gmu ON gms.groupid = gmu.groupid
WHERE gmu.userid = %%USERID%%
AND gms.userid LIKE 'student%'
If it does then it needs to link to the correct place. Now his is quiet a leap, but and it "might" be used this way: (select * is not recommended, just an abbreviation):
SELECT
*
FROM prefix_role_assignments AS ra
INNER JOIN prefix_user u ON ra.userid = u.id
INNER JOIN (
SELECT DISTINCT
gms.userid
FROM mdl_groups_members gms
INNER JOIN mdl_groups_members AS gmu ON gms.groupid = gmu.groupid
WHERE gmu.userid = %%USERID%%
AND gms.userid LIKE 'student%'
) sg ON ra.userid = sg.userid
INNER JOIN prefix_context AS ctx ON ctx.id = ra.contextid
INNER JOIN prefix_course c ON c.id = ctx.instanceid
INNER JOIN prefix_enrol e ON e.courseid = c.id
INNER JOIN prefix_user_enrolments ue ON ue.enrolid = e.id AND ue.userid = u.id
LEFT JOIN prefix_course_completions cc ON cc.course = c.id AND cc.userid = u.id
LEFT JOIN prefix_grade_items gi ON gi.courseid = c.id AND gi.itemtype = 'course'
LEFT JOIN prefix_grade_grades g ON g.itemid = gi.id AND g.userid = u.id
LEFT JOIN (
SELECT
cmc.userid
, cm.course
, COUNT(cmc.id) AS completed
FROM prefix_course_modules_completion cmc
, prefix_course_modules cm
WHERE cm.visible = 1
AND cmc.coursemoduleid = cm.id
AND cmc.completionstate IN ('1', '2')
GROUP BY
cm.course
, cmc.userid
) cmc ON cmc.course = c.id AND cmc.userid = u.id
WHERE u.id > 0
AND (
c.id IN (
SELECT DISTINCT
(ctx.instanceid) AS id
FROM prefix_role_assignments ra
INNER JOIN prefix_context ctx ON ra.contextid = ctx.id
WHERE ra.userid = %%USERID%% AND ctx.contextlevel = 50
AND ra.roleid IN ('1', '9', '2', '3', '4', '10')
)
OR c.id IN (
SELECT DISTINCT
(c.id) AS id
FROM prefix_role_assignments ra
INNER JOIN prefix_context ctx ON ra.contextid = ctx.id
INNER JOIN prefix_course c ON c.category = ctx.instanceid
WHERE ra.userid = %%USERID%% AND ctx.contextlevel = 40
AND ra.roleid IN ('1', '9', '2', '3', '4', '10')
)
)
AND u.deleted = 0
AND u.suspended = 0
AND u.username <> 'guest'
AND c.visible = 1
AND ue.STATUS = 0
AND e.STATUS = 0
AND ra.roleid = '5'
GROUP BY
ra.userid
, ctx.instanceid
HAVING u.firstname LIKE 'student%' ESCAPE '\\'