SELECT
concat('<a target="_new" href=%%WWWROOT%%/course/view.php?id=',c.id,'">',c.fullname,'</a>') AS Course
,c.shortname,r.name
,(SELECT CONCAT(u.firstname,' ', u.lastname) AS Teacher
FROM prefix_role_assignments AS ra
JOIN prefix_context AS ctx ON ra.contextid = ctx.id
JOIN prefix_user AS u ON u.id = ra.userid
WHERE ra.roleid = 3 AND ctx.instanceid = c.id LIMIT 1) AS Teacher
,concat('<a target="_new" href="%%WWWROOT%%/mod/resource/view.php?id=',r.id,'">',r.name,'</a>') AS Resource
FROM prefix_resource AS r
JOIN prefix_course AS c ON r.course = c.id
WHERE r.reference LIKE 'https://stackoverflow.com/%'