Select statement into another select To Eloquant - mysql

Question

How can I translate a SQL query like this to Eloquent or QueryBuilder :
SELECT * FROM studies
where studies.id in(SELECT study_id FROM (
SELECT max(studies.end_date), studies.id as study_id
from workers inner join resumes on workers.id=resumes.worker_id
inner join studies on resumes.id=studies.resume_id where
resumes.title="main" group by workers.id) as SQ2
Or globally
How can we make select from other select statement with eloquant for exemple:
SELECT a.id from (SELECT * FROM A INNER JOIN B ON a.id=b.id where a.id > 10) as SUBQ1

Answer 1

I think your current query doesn't get study_id with max end_date in all cases, you can try this one:
SELECT * FROM studies
where studies.end_date in (
SELECT max(studies.end_date)
from workers inner join resumes on workers.id=resumes.worker_id
inner join studies on resumes.id=studies.resume_id where
resumes.title="main" group by workers.id)
and if you want implement that with laravel Eloquant you can do it like this:
$result = DB::table('studies')
->select("*")
->whereIn('end_date', function($query){
$query->selectRaw("max(studies.end_date) as max_date")
->from('workers')
->join('resumes', 'workers.id', '=', 'resumes.worker_id')
->join('studies', 'resumes.id', '=', 'studies.resume_id')
->where('resumes.title', '=', 'main')
->groupBy('workers.id');
})
->get();
foreach($result as $row) {
print_r($row);
}