Convert MySQL query to Laravel (5.5) Query Builder - php

Question

I have a problem tying to convert the following MySQL query to the Laravel (5.5) Eloquent query builder.
$start = '2018-01-22'; // Some random starting point for the Query
$query = "SELECT * FROM cdr c WHERE soort=3 AND con_duur > 0 AND con_duur
>= (select kortbel_seconden from queue q where q.queue_id=c.queue_id) AND `start_tijd >= '$start'";`
I have the following Models:
// CDR Model
<?php
namespace App\Models;
use Illuminate\Database\Eloquent\Model;
class CDR extends Model
{
protected $table = 'cdr';
protected $primaryKey = 'cdr_id';
public function Queue()
{
return $this->hasOne('App\Models\Queue', 'queue_id', 'queue_id');
}
}
// Queue Model
<?php
namespace App\Models;
use Illuminate\Database\Eloquent\Model;
class Queue extends Model
{
protected $table = 'queue';
protected $primaryKey = 'queue_id';
public function cdr()
{
return $this->belongsTo('App\Models\CDR', 'queue_id', 'queue_id');
}
}
So far I have the following code in my Controller:
App\Models\CDR::with('queue')
->where('soort', '3')
->where('con_duur', '>', '0')
->where('start_tijd', '>=' , $start)
->where('con_duur', '>=', ' ') // this is where the sub select from the `queue` table should be : (select kortbel_seconden from queue q where q.queue_id=c.queue_id)
->get();
I’m stuck at the point of the sub select, is there a way to do this with Laravel’s Query Builder?
Thanks!

Answer 1

Consider this code:
DB::table('cdr AS c')
->select("*")
->where('c.soort','=',3)
->where('c.con_duur','>',0)
->where('c.con_duur','>=',function($query){
$query->select('kortbel_seconden')
->from('queue AS q')
->where('q.queue_id', '=', 'c.queue_id');
})
->where("c.start_tijd",">=",$start)
->get();
This part of the query:
->where('c.con_duur','>=',function($query){
$query->select('kortbel_seconden')
->from('queue AS q')
->where('q.queue_id', '=', 'c.queue_id');
})
is used to achieve the below part of the query:
`c`.`con_duur` >=
(SELECT
kortbel_seconden
FROM
queue q
WHERE q.queue_id = c.queue_id)
The above query results can be achieved by the following query as well through join:
DB::table('cdr AS c')
->select("c.*")
->join('queue AS q', 'q.queue_id', '=', 'c.queue_id')
->where('c.soort','=',3)
->where('c.con_duur','>',0)
->where('c.con_duur','>=','q.kortbel_seconden')
->where("c.start_tijd",">=",$start)
->get();
For more details you can visit:
https://laravel.com/docs/5.5/queries#where-clauses