Laravel Yajra datatable global Search filter - laravel

Question

I have this technical difficulty when want to use laravel yajra datatable to write custom global search query
Reference
https://yajrabox.com/docs/laravel-datatables/master/filter-column
when I do some search by passing in calendar date and searchbox value, I'm stuck at correct way to write it
Only the main ->filter got triggered
The ->filterColumn skipped through.... not sure why...
In sql vanila, it is
where firstname like %search% OR
lastname like %search% OR
fullname like %search% OR
email like %search% OR
sponsorby like %search% OR
createddate like %date%
Here is my code for reference. filterCustom is not triggered...
if ($request->ajax()) {
$users = \DB::select('
SELECT id, usercode as membercode, concat(firstname, " ", lastname) as fullname, email, created_at as createddate, (select concat(firstname, " ", lastname) from users where id= m.parentid) sponsorby
FROM users m
ORDER BY m.created_at ASC');
Update: I realize yajra doesn't support DB::select with full raw sql, however it support DB::table
So I change my sql to below,
$users = \DB::table('users')
->select('id', 'usercode as membercode', \DB::raw('concat(firstname, " ", lastname) as fullname'), 'email', 'created_at as createddate', \DB::raw('(select concat(firstname, " ", lastname) from users as b where b.id= users.parentid) as sponsorby'));
//end
return Datatables::of($users)
->addColumn('membercode', function($row){
$content= $row->membercode;
return $content;
})
->addColumn('fullname', function($row){
$content= $row->fullname;
return $content;
})
->addColumn('email', function($row){
$content= $row->email;
return $content;
})
//etc
->filter(function ($sql) use ($request) {
$search = $request->search;
if (!empty($search))
{
$sql->Where('email', 'LIKE', "%$search%");
}
})
->filterColumn('fullname', function($query, $request) {
$search = $request->search;
$sql = 'concat(firstname, " ", lastname) like ?';
$query->whereRaw($sql, ["%{$search}%"]);
})
->filterColumn('membercode', function($query, $request) {
$search = $request->search;
$sql = 'usercode as membercode like ?';
$query->whereRaw($sql, ["%{$search}%"]);
})
->filterColumn('createddate', function($query, $request) {
$search = $request->date;
$sql = 'created_at as createddate like ?';
$query->whereRaw($sql, ["%{$search}%"]);
})
->filterColumn('sponsorby', function($query, $request) {
$search = $request->search;
$sql = '(select concat(firstname, " ", lastname) from users as b where b.id= users.parentid) like ?';
$query->whereRaw($sql, ["%{$search}%"]);
})
->make(true);
}