mysql首字母排序，拋棄傳統的php首字母排序

原生的sql寫法：

  SELECT *

        FROM br_esf_village_building

WHERE 1

ORDER BY CONVERT(  `buildingName`

USING gbk )

COLLATE gbk_chinese_ci ASC

tp框架的寫法：

 $data = $this->where($where)->field($field)->order('CONVERT( `buildingName` USING gbk )COLLATE gbk_chinese_ci ASC')->select();