Laravel DB query group by output is different - mysql

Question

I have the following implemented query in my Laravel project, the query is working if I copy paste in the console, but the DB object sets on subquery group by zeit_von to group by zeit_von is null
$data = DB::table('e_supply AS s')
->select(
DB::raw('count(s.employee) as anzahl_employee'),
DB::raw('group_concat(a.account_lastname order by a.account_lastname ) AS employee_names'),
DB::raw('date_format(s.zeit_von, "%Y") as y'),
DB::raw('date_format(s.zeit_von, "%m") as m'),
DB::raw('date_format(s.zeit_von, "%d") as d'),
DB::raw('date_format(s.zeit_von, "%h") as h')
)
->leftJoin('phpgw_accounts AS a', 'a.account_id', '=', 's.employee')
->where('deleted', 0)
->whereIn('supply_status', [1,3])
->where(
DB::raw('( select count(cal_id) from phpgw_cal_utf8 as c
where c.owner=s.employee
and deleted=0
and date_format(s.zeit_von, "%d.%m.%y")=date_format(from_unixtime(c.mdatetime), "%d.%m.%y")
and c.category="Krank"
)<1 and date_format((s.zeit_von), "%Y")="'.$year.'" group by zeit_von'
)
)
->get();
What i'm missing in this case?

Answer 1

using whereRaw for a subquery suppress the problem what I faced
$data = DB::table('e_supply AS s')
->select(
'zeit_von as raw_time',
DB::raw('count(distinct s.employee) as anzahl_employee'),
DB::raw('group_concat(a.account_lastname order by a.account_lastname ) AS employee_names'),
DB::raw('date_format(s.zeit_von, "%Y") as y'), DB::raw('date_format(s.zeit_von, "%m") as m'),
DB::raw('date_format(s.zeit_von, "%d") as d'), DB::raw('date_format(s.zeit_von, "%h") as h')
)
->leftJoin('phpgw_accounts AS a', 'a.account_id', '=', 's.employee')
->where('deleted', 0)
->whereIn('supply_status', [1, 3])
->whereRaw(
DB::raw('( select count(cal_id) from phpgw_cal_utf8 as c
where c.owner=s.employee
and deleted=0
and date_format(s.zeit_von, "%d.%m.%y")=date_format(from_unixtime(c.mdatetime), "%d.%m.%y")
and c.category="Krank"
)<1'
)
)
->whereYear('s.zeit_von', $year)
->groupBy('zeit_von')
->get();