laravel when code example

Example 1: laravel join

Inner Join 	: ->join('contacts', 'users.id', '=', 'contacts.user_id')
Left Join 	: ->leftJoin('posts', 'users.id', '=', 'posts.user_id')
Right Join 	: ->rightJoin('posts', 'users.id', '=', 'posts.user_id')
Cross Join 	: ->crossJoin('colors')

Advance Queries : 
----------------- 
 		->join('contacts', function ($join) {
            $join->on('users.id', '=', 'contacts.user_id')
                 ->where('contacts.user_id', '>', 5);
        })

Example 2: laravel when

/* you may only want to apply a where statement if a given input value
is present on the incoming request.
*/
$role = $request->input('role');

$users = DB::table('users')
                ->when($role, function ($query, $role) {
                    return $query->where('role_id', $role);
                })
                ->get();

Example 3: laravel not in query

DB::table(..)->select(..)->whereNotIn('book_price', [100,200])->get();

Example 4: laravel update from query

$affected = DB::table('users')
              ->where('id', 1)
              ->update(['votes' => 1]);

Example 5: laravel sql query

use Illuminate\Support\Facades\DB;

$users = DB::select('select * from users');

foreach ($users as $user) {
    echo $user->name;
}

Example 6: join in laravel eloquent

$customer = DB::table('customers')
                ->join('shops', 'customers.shop_id', '=', 'shops.shop_id')
                ->where('customer_contact', $contact_no)
                ->get();