How to combined duplicate row to one row in laravel 5.7 controller - laravel

Question

I want to combined the duplicate row to one row and show the result in front end but i face some error please any one help .
time_session | day
------------ ----
1 saturday
2 friday
2 friday
3 wednessday
this is my controller code:
public function classSchedule()
{
$duplicates = DB::table('applications')
->join('batches','applications.time_session' ,'=','batches.id')
->select( 'applications.*' , 'batches.*')
->groupBy('applications.time_session')
->get();
return view('backEnd.classes.manageClass1',['duplicates'=>$duplicates]);}
this is my front end code:
<td> {{$duplicate->time_session }} </td>
time_session | day taking day
------------ ---- ----------
1 saturday 1
2 friday 2
3 wednessday 1
SQLSTATE[42000]: Syntax error or access violation: 1055 'pixelmetro.applications.id' isn't in GROUP BY (SQL: select `applications`.*, `batches`.* from `applications` inner join `batches` on `applications`.`time_session` = `batches`.`id` group by `applications`.`time_session`)
Actual out put :
https://www.facebook.com/photo.php?fbid=2317443465016247&set=pcb.442972496253366&type=3&theater&ifg=1

Answer 1

This 1055 error is a MySQL issue that can be resolved changing Laravel config. Go to config/database.php file and change mysql property strict from true to false. 'strict' => false,
If you don't want to change it, then you can add a new property modes
'modes' => [
'STRICT_TRANS_TABLES',
'NO_ZERO_IN_DATE',
'NO_ZERO_DATE',
'ERROR_FOR_DIVISION_BY_ZERO',
'NO_AUTO_CREATE_USER',
'NO_ENGINE_SUBSTITUTION'
]
And yeah don't forget to run the command php artisan config:cache after making changes.
To get desired result you need to use count.
$duplicates = DB::table('applications')
->join('batches','applications.time_session' ,'=','batches.id')
->select( 'applications.*' , 'batches.*', DB::raw('COUNT(applications.time_session) as counter')
->groupBy('applications.time_session')
->get();
In blade:
#foreach($duplicates as $duplicate)
<td>$duplicate->counter</td>
#endforeach

Answer 2

i think you have some miss conception on group by.if you group by with a certain column then you have to get others column with aggregate function.
in your case you made group by with (time_session) and you try to get all from the table that's why you got the error.
solution: you can make group by with both (time_session and day) then your problem will be solve.
sample code:
public function classSchedule()
{
$duplicates = DB::table('applications')
->join('batches','applications.time_session' ,'=','batches.id')
->select( 'applications.*' , 'batches.*')
->groupBy('applications.time_session')
->groupBy('applications.day')
->get();
return view('backEnd.classes.manageClass1',['duplicates'=>$duplicates]);}