Laravel雄辩地查询ID后的20条最新记录？

Question

我有记录的ID。我需要查询记录之前更新的20个最新记录与id。

像这样的事情

$orders = Order::latest('updated_at')->take(20)->before(id)->get(); 

我使用laravel5.5

编辑

望着答案，我觉得我的问题是不够清晰。

说这是我的数据库表和身份证我已经是5

--------------------------------- 
|id| name | updated_at   | 
|--|------|---------------------| 
|1 |a  | 2017-09-21 06:27:59 | 
|2 |b  | 2017-09-19 06:20:29 | 
|3 |c  | 2017-09-12 05:27:59 | 
|4 |d  | 2017-09-18 05:17:39 | 
|5 |e  | 2017-09-17 06:27:48 | 
|6 |b  | 2017-09-19 06:27:59 | 
|7 |f  | 2017-09-04 06:27:58 | 
|8 |g  | 2017-09-06 06:27:14 | 

我想最近的更新记录，以便

--------------------------------- 
|id| name | updated_at   | 
|--|------|---------------------| 
|1 |a  | 2017-09-21 06:27:59 | 
|2 |b  | 2017-09-19 06:20:29 | 
|4 |d  | 2017-09-18 05:17:39 | 
|5 |e  | 2017-09-17 06:27:48 | 
|3 |c  | 2017-09-12 05:27:59 | 
|6 |b  | 2017-09-09 06:27:59 | 
|8 |g  | 2017-09-06 06:27:14 | 
|7 |f  | 2017-09-04 06:27:58 | 

现在20（在这种情况下，所有）记录与记录之前更新ID 5

--------------------------------- 
|id| name | updated_at   | 
|--|------|---------------------| 
|3 |c  | 2017-09-12 05:27:59 | 
|6 |b  | 2017-09-09 06:27:59 | 
|8 |g  | 2017-09-06 06:27:14 | 
|7 |f  | 2017-09-04 06:27:58 | 

这是我需要的结果。

Answer 1

你可以使用这样的查询

select * from yourtable as t 
inner join (
    SELECT * FROM `yourtable` WHERE id = 590 
) as tm 
on t.updated_at < tm.updated_at order by t.updated_at desc 
limit 10 

用雄辩的ORM：

与您的ID替换590

$orders = Order::join(
     \DB::raw(
      '(select updated_at AS ddd from orders where id = 590) AS t'), 
     't.ddd', 
     '>', 
     'orders.updated_at' 
    )->latest('updated_at')->take(20)->get(); 

Answer 2

怎么是这样的：

$id; 
$num = 20; 

$orders = Order::where('id', '<=', $id - $num) 
       ->orderBy('updated_at', 'desc') 
       ->take($num) 
       ->get(); 

或

$id; 
$range = 20; 
$query = []; 

foreach (range($id - $range, $id) as $idNumber) { 
    $query[] = $idNumber; 
} 

$orders = Order::find($query)->orderBy('updated_at', 'desc'); 

https://laravel.com/docs/5.5/eloquent

如果有机会，你在哪里做Laravel复杂的查询你想使用DB类https://laravel.com/docs/5.5/database#database-transactions

Answer 3

尝试这样的事情，看看它做你追求

$orders = Order::orderBy('updated_at', 'desc')->get(); 

$index = $orders->search(function (Order $order) { 
    return $order->id === 5; 
}); 

$orders = $orders->splice($index+1, 20);