I have a Mysql query that need to be change to laravel eloquent query. I'm beginner in this. Need some help to convert this or a good reference for this. I read the documentation provided by laravel, but it's not enough. What i'm tryin to achieve is get the latest data for each id_nama_ruang
So mysql query :
select * from tb_ruang_tt t
inner join (
select id_nama_ruang, max(tgl_pengubahan) as MaxDate
from tb_ruang_tt
group by id_nama_ruang
) tm on t.id_nama_ruang = tm.id_nama_ruang and t.tgl_pengubahan = tm.MaxDate
I tried to use this on Laravel :
$data = DB::select('select * from tb_ruang_tt t
inner join (
select id_nama_ruang, max(tgl_pengubahan) as MaxDate
from tb_ruang_tt
group by id_nama_ruang) tm on t.id_nama_ruang = tm.id_nama_ruang and t.tgl_pengubahan = tm.MaxDate');
It works but my problem is i can't call my Relationship function on model. So i need something like this:
$data = ruang_tt::select();
instead of using $data = DB::select()
;
Please help, any help and pointer is appreciated.
So after many try, I use subquery like this :
$latestRuang = ruang_tt::select('id_nama_ruang', \DB::raw('MAX(tgl_pengubahan) as MaxDate'))->groupBy('id_nama_ruang');
$data = ruang_tt::from('tb_ruang_tt as t')->joinSub($latestRuang, 'latest_ruang', function ($join) {
$join->on('latest_ruang.id_nama_ruang', '=', 't.id_nama_ruang')->on('latest_ruang.MaxDate', '=', 't.tgl_pengubahan');
})->get();
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