dongsu4345 2018-10-26 05:37
浏览 60
已采纳

Laravel在1个查询中多次计数

Im new to this Framework, i dont know how to optimize it using db::raw count and aliases and display it to my blade.php using @foreach

im trying to optimize my code, my goals is to count pallet_conditions and store it to my aliases, i dont want to count it one by one like what i did on this code

this is my code not optimize:

//computing the total rapairable
$repairable_total = DB::table('liip_psrm_items')
->where('psrm_items_id', '=' , $psrm_maintenance->id)
->where('pallet_condition', '=', 1)
->count();
//REPAIRABLE

//computing the total good pallets
$good_total = DB::table('liip_psrm_items')
->where('psrm_items_id', '=' , $psrm_maintenance->id)
->where('pallet_condition', '=', 0)
->count();
//GOOD

this is the code, what i wanted to learn. just to minimize, and use aliases

$result = DB::table('liip_psrm_items')
->select(DB::raw('COUNT(liip_psrm_items.pallet_condition = 0 ) AS condition_1',
                 'COUNT(liip_psrm_items.pallet_condition = 1 ) AS condition_2'))                      
                ->where('psrm_items_id', '=' , $psrm_maintenance->id)
                ->get();
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2条回答 默认 最新

  • doulan9188 2018-10-26 05:48
    关注

    Try to pass a closure like so:

    $results = DB::table('liip_psrm_items')
    ->where('psrm_items_id', '=' , $psrm_maintenance->id)
    ->where(function($query){
       $query->where('pallet_condition', 1)
          ->orWhere('pallet_condition', 0);
    })->count();
    
    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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