SQL：查询使用计数返回1

Question

I have a query in PHP(MySQL). I am fetching records from a table and returning them to a datatable.

The problem is it always returns 1 when I use count() with the query.

However, if I count the elements of the array, then the result is as expected. It returns all 8 records.

Following is my code:

public function job_order_detail_del($arr=array()) {
        $count = 0;
        $start = isset($arr['start'])?$arr['start']:0;
        $length = isset($arr['length'])?$arr['length']:0;
        $search = isset($arr['search'])?$arr['search']:'';
        $orderBy = isset($arr['orderBy'])?$arr['orderBy']:'';
        $orderDir = isset($arr['orderDir'])?$arr['orderDir']:'';
        $aufnr = isset($arr['aufnr'])?$arr['aufnr']:0;
        $aufpl = isset($arr['aufpl'])?$arr['aufpl']:0;
        $type = isset($arr['type'])?$arr['type']:'';
        $whr = array('h.stats' => '', 'h.bukrs' => Session::get('company'), 'h.delstats' => '');
        if ($aufnr > 0)
            $whr['a.aufnr'] = $aufnr;
        if ($aufpl > 0)
            $whr['a.aufpl'] = $aufpl;

        $a = DB::table('zpp_afpo_h as h')
                ->leftjoin('zpp_afpo as a ', function($join) {
                    $join->on('a.aufnr', '=', 'h.aufnr')
                    ->where('a.bukrs', '=', Session::get('company'))
                    ->where('a.stats', '=', '');
                })
                ->leftjoin('zpp_afvc as b ', function($join) {
                    $join->on('a.aufnr', '=', 'b.aufnr')
                    ->on('a.aufpl', '=', 'b.aufpl')
                    ->where('b.bukrs', '=', Session::get('company'))
                    ->where('b.stats', '=', '');
                })
                ->leftjoin('zpp_afru as c ', function($join) use($type) {
                    $join->on('c.aufnr', '=', 'b.aufnr')
                    ->on('c.rueck', '=', 'b.rueck');
                })
                ->where('c.type', '=', $type)
                    ->where('c.bukrs', '=', Session::get('company'))
                    ->where('c.stats', '=', '')
                    ->where('c.delstats', '=', '')
                ->select('h.idat2', 'a.matnr', 'b.arbpl', 'a.gamng as total', 'b.rueck', 'h.priority', 'b.vornr', 'b.prev_startper', 'b.scrap', 'h.dispatch_date', 'h.order_start_dt', 'h.requirement_dt', 'h.ktxt', 'c.rmzhl', 'c.budat', 'c.aufnr', 'c.rework_lmnga', DB::raw('sum(c.lmnga) as sum_cnfrm'));
        if ($aufnr == '') {
            $a->where('h.idat2', '=', '0000:00:00');
        }
        $a->where($whr)
                ->groupby('b.rueck')
                ->groupby('c.rmzhl')
                ->groupby('c.counter');
        if($orderBy!=''){
                $a->orderBy($orderBy,$orderDir);
        }
        if($search!=''){
          $dt_srch = implode('-',array_reverse(explode('-',$search)));
          $a->where(function($query) use ($search,$dt_srch){
            $query->where('c.aufnr','LIKE','%'.$search.'%')
                  ->orWhere('a.matnr','LIKE','%'.$search.'%')
                  ->orWhere('c.budat','LIKE','%'.$dt_srch.'%')
                  ->orWhere('b.arbpl','LIKE','%'.$search.'%')
                  ->orWhere('a.gamng','LIKE','%'.$search.'%');
          });
        }
        if($length>0){
          $get_rec = $a->skip($start)->take($length)->get();
        }else{
          $get_rec = $a->get();
          $count = count($get_rec);
//          $count = $a->count(); //Problem is here
          return $count;
        }
        $arr = array();
        foreach($get_rec as $l){
                    if($length>0 || Input::get('open') == 1 || Input::get('open') == 2){
                        $arr = DB::table('maras')
                                    ->where('matnr','=',$l->matnr)
                                    ->where('bukrs','=',Session::get('company'))
                                    ->where('stats','=','')
                                    ->where('delstats','=','')
                                    ->select(DB::raw('GROUP_CONCAT(distinct(matnr)) as mat'),DB::raw('GROUP_CONCAT(distinct(mdesc)) as mat_desc'))
                                    ->groupby('matnr')
                                    ->first();
                        $l->matnr = $arr->mat;
                        $l->mat_desc = $arr->mat_desc;
                    }

                }

        return $get_rec;
    }

Please let me know the problem. Thanks in advance.

Answer 1

You are using count on groupBy element and count is returning only the grouped count. That's why it is returning only single row or 1. You could count the returned collections in this case like-

$count = $get_rec->count();