thinkphp3.2 分组统计连接查询

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$count=$reportTempModel->where($where)->count('distinct PID');

$test=$disease->alias('a')->join('left join __DISEASE__ b on a.disease_id = b.id')->field("a.disease_id,b.name,count(a.id) as total")->where($where)->group('disease_id')->select();

生成如下语句：

SELECT a.disease_id,b.name,count(a.id) as total FROM bureau_physical_disease a left join bureau_disease b on a.disease_id = b.id WHERE ( disease_id in (2,3) ) GROUP BY disease_id

例2

 $count=$reportTempModel                ->alias('a')                ->join('left join __VILLAGER_ARCHIVES__ b on a.PID = b.PID')                ->where($where)                ->count('distinct a.PID');        $Page=new \Think\Page($count);// 实例化分页类 传入总记录数和每页显示的记录数        $show = $Page->show();// 分页显示输出        $data=$reportTempModel                ->alias('a')                ->field('a.type,b.name,b.PID,b.archivesID,b.update_time')                ->join('left join __VILLAGER_ARCHIVES__ b on a.PID = b.PID')                ->where($where)                ->group('a.PID')                ->select();

例3

$orderM->field('status,count(*) as num')->where(array('buyer_id'=>$member_id))->group('status')->select();

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