通过雄辩的拉拉维夫（Lelavel laravel）与组获取最小（日期），最大（日期）

Question

This query is for getting other data with the highest value of date with the group by/unique. Here I used unique in place of group by.
My question is how to get min(date) and max(date) with group by/unique. The group by/unique is for Dataset table's date field.
I have searched for this but not getting exact solution that how to get max and min date with group by/unique in laravel eloquent.
In table structure, there are multiple entries for one code so here I used group by/unique to get one record for the code.

There can be multiple dates as 02-01-2003,01-03-2007,01-01-2019, 01-07-2018... etc. with same/ different code. If I group by with code then get onmy one record per code. So here I want to select the max date [01-01-2019] and min date [02-01-2003].

Thanks in advance.

Controller:

$datasets = Dataset::where('user_id', $user_id)
          ->orderBy('date','desc')
          ->get(['code', 'access','user_id','date'])
          ->unique('code');

Answer 1

Try to select max and min date like this:

$datasets = Dataset::select('code', 'access','user_id', DB::raw('MAX(date) as max_date'),  DB::raw('MIN(date) as min_date'))
                    ->where('user_id', $user_id)
                    ->orderBy('date','desc')
                    ->get()
                    ->unique('code');

Answer 2

Finally I got solution but this can not be the exact solution but as I am beginner and not getting the exact solution I do this functionality as below:

I created two different queries to get min and max values.

$min_datasets = Dataset::where('user_id', $user_id)
      ->orderBy('date','asc')
      ->get(['code', 'access','user_id','date'])
      ->unique('code');


$max_$datasets = Dataset::where('user_id', $user_id)
      ->orderBy('date','desc')
      ->get(['code', 'access','user_id','date'])
      ->unique('code');

Answer 3

$data = DB::table('table_name')->where('user_id',$user_id)
->select('code','access','user_id','date')
->whereBetween('date', [02-01-2003, 01-01-2019])
->groupBy('unique_column')
->get()