Gathering information in 1 row using related tables - php

Question

I am trying to build my database using related tables. I am getting the right output from the database, however - Since the user is the same, and the only change in data is the courses, I would like to gather the values "Engelsk" and "Matematik" in the same row, instead of having two outputs which are virtually the same, except the courses.
Is this even possible without having this in the same row in the database? And if so, I'd very much like to know how :)
Array
(
[0] => Array
(
[Type] => Elev
[Username] => test
[Name] => Test Testsen
[Grade] => 9. Klasse
[Course] => Engelsk
)
[1] => Array
(
[Type] => Elev
[Username] => test
[Name] => Test Testsen
[Grade] => 9. Klasse
[Course] => Matematik
)
)
So basically what I would like to achieve is something like this:
Array
(
[0] => Array
(
[Type] => Elev
[Username] => test
[Name] => Test Testsen
[Grade] => 9. Klasse
[Course] => Engelsk, Matematik
)
My query looks like this:
SELECT
*
FROM
lek_Essentials
LEFT JOIN
lek_Type
ON
lek_Essentials.TypeId = lek_Type.TypeId
LEFT JOIN
lek_Grades
ON
lek_Essentials.GradeId = lek_Grades.GradeId
LEFT JOIN
lek_GradeCourses
ON
lek_Grades.GradeId = lek_GradeCourses.GradeId
LEFT JOIN
lek_Courses
ON
lek_GradeCourses.CourseId = lek_Courses.CourseId
LEFT JOIN
lek_Request
ON
lek_Courses.CourseId = lek_Request.CourseId
WHERE
lek_Essentials.UserId = lek_Request.UserId

Answer 1

It's not exactly clear what tables each of the columns in your array are coming from but in MySQL you can use GROUP_CONCAT to aggregate the two rows into one:
SELECT t.type,
e.username,
e.name,
g.grade,
group_concat(c.course) course
FROM lek_Essentials e
LEFT JOIN lek_Type t
ON e.TypeId = t.TypeId
LEFT JOIN lek_Grades g
ON e.GradeId = g.GradeId
LEFT JOIN lek_GradeCourses gc
ON g.GradeId = gc.GradeId
LEFT JOIN lek_Courses c
ON gc.CourseId = c.CourseId
LEFT JOIN lek_Request r
ON c.CourseId = r.CourseId
WHERE e.UserId = r.UserId
group by t.type, e.username, e.name, g.grade