Combine whereRaw() with leftjoin() using eloquent - php

Question

I am trying to join 2 tables and get the latest unique results using whereRaw() and leftJoin() with Laravel eloquent.
I have 2 tables:-
skills table (has timestamps):-
| id| name | icon |
| 1 | skill 1 | skill1.png |
| 2 | skill 2 | skill2.png |
| 3 | skill 3 | skill3.png |
scores table (has timestamps):-
| id| player_id | skill_id | score |
| 1 | 1 | 1 | 1 |
| 2 | 1 | 2 | 1 |
| 3 | 1 | 3 | 1 |
| 4 | 1 | 2 | 2 |
I would like to return all skills but only the latest entry(by id), so for the above snippet I should get:-
| id| player_id | name | skill_id | score |
| 1 | 1 | skill 1 | 1 | 1 |
| 3 | 1 | skill 3 | 1 | 1 |
| 4 | 1 | skill 2 | 2 | 2 |
I can get the latest unique records by using:
return SkillScores::where('player_id', $this->id)
->whereRaw('id in (select max(id) from skills group by (name))')
->get();
I can get the skill names by using:-
return SkillScores::where('player_id', $this->id)
->leftJoin('skills', 'skill_scores.skill_id', '=', 'skills.id')
->get();
but when I combine them I get an SQLSTATE[23000] error
return SkillScores::where('player_id', $this->id)
->whereRaw('id in (select max(id) from skills group by (name))')
->leftJoin('skills', 'skill_scores.skill_id', '=', 'skills.id')
->get();
Can anyone help me figure out what is going wrong?
EDIT:-
It turns out that the SQLSTATE[23000] error is occuring because I have an id column in both tables and I havent told it which one I am referencing, the below fixes the issue and gives me the correct result.
return SkillScores::where('player_id', $this->id)
->whereRaw('skill_scores.id in (select max(skill_scores.id) from skill_scores group by (skill_id))')
->leftJoin('skills', 'skill_scores.skill_id', '=', 'skills.id')
->get();

Answer 1

I think there is a minor problem on your expected result(id and name is not matching) but i made it work as following;
The query;
SELECT scores.*, skills.*
FROM scores
INNER JOIN (SELECT skill_id, max(id) AS maxId
FROM scores
WHERE player_id = 1
GROUP BY skill_id) AS sub ON sub.maxId = scores.id
INNER JOIN skills ON skills.id = scores.skill_id;
The eloquent version (You may replace it with DB::table() if you want)
$subQuery = Score::where('player_id', DB::raw($this->id))
->groupBy('skill_id')
->select('skill_id', DB::raw('MAX(id) as maxId'));
return Score::join(DB::raw('(' . $subQuery->toSql() . ') as subQuery'), 'subQuery.maxId', '=', 'scores.id')
->join('skills', 'skills.id', '=', 'scores.skill_id')
->get(['scores.*', 'skills.*']);