Laravel Improve Getting Data From Database - php

Question

This is my code in getting the data from the database to pass to review page. But the problem here is it will took 1min 30secs or 2-3mins before the loading will be finished.
$province = $this->getProvince(); // Get Province Library
$cityPostalCode = $this->getCityPostalCode($id = null); // Get City Library
$occupations = $this->getOccupations(); // Get Province Library
$schoolname = $this->getSchoolname(); // Get Schoolname Library
return view('pages.frontend.review', compact('data',
'province',
'cityPostalCode',
'occupation',
'schoolname')
);
This is my code in getting each data in database
For province
protected function getProvince(){
$province = Db::table('address_library')->select('province',
'province_code')->distinct()->get(); return $province;
}
For City Postal Code
protected function getCityPostalCode($id){
if(!empty($id)){
$cityPostalCode = Db::table('address_library')
->select('province_code','city','postal_code')
->where('province_code','=',$id)
->distinct('postal_code')
->get(); }
else {
$cityPostalCode = Db::table('address_library')
->select('province_code','city','postal_code')
->distinct('postal_code')
->get();
}
return $cityPostalCode;
}
For Occupations
protected function getOccupations(){
$occupation_library = Db::table('occupation_library')
->select('id', 'title')
->orderBy('id', 'ASC')
->distinct()
->get();
return $occupation_library;
}
For Schoolname
protected function getSchoolname(){
$schoolname = Db::table('schoolname_library')
->select('code', 'name')
->orderBy('id', 'ASC')
->get();
return $schoolname;
}
It will took 1min 30secs or 2mins before loading the page

Answer 1

If you are working with a lot of data you are better of with using chunk approach, like mentioned in the official docs.
If it's still unclear I will post an example