tp3.2原生sql拼接查询

//获取搜索结果
          $sql = "SELECT * FROM `br_esf_village_price` p,(SELECT villageId,MAX(updateTime) max_time FROM br_esf_village_price GROUP BY villageId) as b,br_esf_village v WHERE p.villageId= b.villageId AND p.updateTime=b.max_time AND v.villageId = p.villageId ";
          if($condition['qy']){ //区域
              $sql .= "and fangAreaId = ".$condition['qy']."   ";
          }
          if($condition['qy']){ //商圈
              $sql .= "and fangTradingId = ".$condition['sq']."   ";
          }
          if($condition['jg'] || $condition['zdyjg']){ //价格
              $temp = array();
              $temp = $condition['zdyjg'] ? explode(",",$condition['zdyjg']) : explode(",",$condition['jg']);
              if(count($temp) == 2){
                  $sql .= "and p.price >=".$temp[0]." and p.price <=".$temp[1]. " ";
              }
          }
          if($condition['ll']){
          $temp = array();

          $temp = explode(",",$condition['ll']);

          if(count($temp) == 2){

              $temp[0] = date("Y",strtotime("-".$temp[1]." years"));//这里大的反而小，小的反而大

              $temp[1] = date("Y",strtotime("-".$temp[0]." years"));

              $sql .= "and buildingYears >= ".$temp[0]."";

          }
          }
          if($condition['dt'] == 'Y'){//地铁
              $sql .= " and hasMetro = 1";
          }


          if($order=='default'){
              $sql .=  "ORDER BY orderBy desc";
          }
          if($order=='pricedesc'){
              $sql .=  "ORDER BY  p.price desc";
          }
          if($order=='priceasc'){
              $sql .=  "ORDER BY  p.price asc";
          }

          $sql .= " limit $PageClass->firstRow,$PageClass->listRows";

          $data=$this->query($sql);