How to get total users average time passed 7 days - mysql

Question

I want to get the per day total users average usage time for passed 7 days i written the the SQL for each users average time it's coming perfectly but i have an u\issues in LARAVEL SQL function please help fix this SQL.
$currentTime = Carbon::today();
$userUsage = DB::table('active_user')
->select(DB::raw('acu_name as name'),
DB::raw('u_fname as fname'),
DB::raw('AVG(TIMESTAMPDIFF(MINUTE,acu_at,acu_et)) as averageTime'),
DB::raw('count(*) as number'))
->join('u_info_one', 'active_user.acu_name', '=', 'u_info_one.u_email')
->whereDate('acu_at', '<=', $currentTime)
->groupBy('acu_name')
->get();

Answer 1

You need to use GROUP BY for this, e.g.:
$userUsage = DB::table('active_user')
->select(DB::raw('acu_name as name'),
DB::raw('u_fname as fname'),
DB::raw('AVG(TIMESTAMPDIFF(MINUTE,acu_at,acu_et)) as averageTime'),
DB::raw('count(*) as number'))
->join('u_info_one', 'active_user.acu_name', '=', 'u_info_one.u_email')
->whereDate('acu_at', '<=', $currentTime)
->groupBy('acu_name', DB::raw('DATE(acu_at)'))
->get();
update
If you just need daily average for all the users, you can remove acu_name from group by, e.g.:
$userUsage = DB::table('active_user')
->select(DB::raw('acu_name as name'),
DB::raw('u_fname as fname'),
DB::raw('AVG(TIMESTAMPDIFF(MINUTE,acu_at,acu_et)) as averageTime'),
DB::raw('count(*) as number'))
->join('u_info_one', 'active_user.acu_name', '=', 'u_info_one.u_email')
->whereDate('acu_at', '<=', $currentTime)
->groupBy(DB::raw('DATE(acu_at)'))
->get();

Answer 2

Correct Answer is
$userUsage = DB::table('active_user')
->select(DB::raw('DATE(acu_at) as date'),
DB::raw('AVG(TIMESTAMPDIFF(MINUTE,acu_at,acu_et)) as averageTime'),
DB::raw('COUNT(DISTINCT `acu_name`) as users'))
->join('u_info_one', 'active_user.acu_name', '=', 'u_info_one.u_email')
->whereDate('acu_at', '<=', $currentTime)
->groupBy(DB::raw('DATE(acu_at)'))
->orderBy(DB::raw('DATE(acu_at)'))
->get();
foreach($userUsage as $usUa)
{
$avegTime = ($usUa->averageTime/$usUa->users);
echo "['".$usUa->date."',".$avegTime."],";
}