Laravel 连接两个表

Question

我有两个表，即查看表和点击表，如下所示

id  View_count  Created_at
1   10         January
2   20         Febrauary
3   30          March

id  Click_count Created_at
1   20          January
2   40           March
3   30            May

我想获取基于月份的计数数据。通过查询，我想获得如下表信息。

Created_at  View_count  Click_count
January         10         20
Febrauary       20  
March           30         40
May             30

我试过这样：

$view_count= View::select(DB::raw("count(*) as count"))
        ->orderBy("created_at")
        ->groupBy(DB::raw("month(created_at)"))
        ->get()->toArray();
    $view_count= array_column($view_count, 'count');

$click_count= Click::select(DB::raw("count(*) as count"))
        ->orderBy("created_at")
        ->groupBy(DB::raw("month(created_at)"))
        ->get()->toArray();
    $click_count= array_column($click_count, 'count');


 $count_bymonth =  View::select(DB::raw('MONTHName(created_at) as month'))
        ->groupBy(DB::raw(' MONTH(created_at)'))
        ->get()->toArray();
    $count_bymonth  = array_column($count_bymonth , 'month');


 return view('testing')
       ->with('view_count', json_encode($view_count, JSON_NUMERIC_CHECK))
        ->with('click_count', json_encode($click_count, JSON_NUMERIC_CHECK))
        ->with('count_bymonth', json_encode($count_bymonth, JSON_NUMERIC_CHECK));

如果有人知道这个问题的答案，请尽快让我知道。

谢谢。

Answer 1

你可以在一个查询中做到这一点

$result = View::join('Click','Click.Created_at','=','View.Created_at')
          ->select(
           'Click_count.Created_at'
           DB::raw('SUM(Click_count) as Click_count'),
           DB::raw('SUM(View_count) as View_count')
          )
          ->groupBy('Click.Created_at')
          ->orderBy("created_at")
          ->get();

return view('testing')->with('result'); 

那么你所要做的就是循环result。

Answer 2

使用 laravel 查询构建器连接

DB::table('View')
            ->join('Click', 'View.Created_at', '=', 'Click.Created_at')->get();