THINKphp中复杂的查询

  • 字符串拼接查询
    案例一:拼接字符串(多条件查询)        
    $where = '';   //定义字符串,用于拼接满足条件的数据字段
            $value = [];  // 定义空数组,用于接收值
            if(!empty($nickname)){
                $where .= ' AND nickname = :nickname'; //数据表字段
                $value['nickname'] = $nickname;  //赋值
            }
            if(!empty($phone)){
                $where .= ' AND mobile = :mobile';
                $value['mobile'] = $phone;
            }
            if(!empty($user_status)){
                $where .= ' AND user_status = :user_status';
                $value['user_status'] = $user_status;
            }
    
            if(!empty($reg_start_end)){
                $start_end = explode('|',$reg_start_end);
                if(!empty($start_end[0])){
                    $where .= ' AND create_time > :start_time';
                    $value['start_time'] = strtotime($start_end[0]);
                }
                if(!empty($start_end[1])){
                    $where .= ' AND create_time <= :end_time';
                    $value['end_time'] = strtotime($start_end[1]);
                }
            }
    
            if(!empty($is_proxy)){
                $where .= ' AND is_proxy = :is_proxy';
                $value['is_proxy'] = $is_proxy;
            }
            if(!empty($sex)){
                $where .= ' AND gender = :gender';
                $value['gender'] = $sex;
            }$list  = $obj->whereRaw('1=1'.$where.'', $value)->limit($limit_start, $limit_length)->order('create_time', 'asc')->select();  //查询满足条件的数据
       Db::table('表名') ->whereRaw('id = :id AND name LIKE :name ', ['id' => 0, 'name' => 'thinkphp%']) ->select(); //形成的原生sql语句.



    案例二:快捷查询
    快捷查询方式是一种多字段相同查询条件的简化写法,可以进一步简化查询条件的写法,在多个字段之间用|分割表示OR查询,用&分割表示AND查询,可以实现下面的查询,例如:
    Db::table('think_user')
        ->where('name|title','like','%thinkphp%')
        ->where('create_time&update_time','>',0)
        ->find();

    生成的查询SQL如下:
    SELECT * FROM `think_user` WHERE ( `name` LIKE 'thinkphp%' OR `title` LIKE 'thinkphp%' ) AND ( `create_time` > 0 AND `update_time` > 0 ) LIMIT 1
    SELECT * FROM `think_user` WHERE ( `name` LIKE 'thinkphp%' OR `title` LIKE 'thinkphp%' ) AND ( `create_time` > 0 AND `update_time` > 0 ) LIMIT 1;



    案例三: 拼接字符串查询
    $where  = '';
    if ($status != 'all') {
            $where .= ' AND status=' . $status; //拼接满足条件的表字段
    }





     

posted @ 2018-12-14 11:47  WQ兜兜转转  阅读(839)  评论(0编辑  收藏  举报