id,type,areaName,parentAreaCode,areaCode select from tb_pluss_area_city where type = 1 select from tb_pluss_area_city where type = 1 select from tb_pluss_area_city where parentAreaCode=#{areaCode} select from tb_pluss_area_city where parentAreaCode = #{areaCode} select from tb_pluss_area_city where areaCode = #{areaCode} SELECT a.areaCode AS provinceCode ,b.areaCode AS cityCode ,a.areaCode AS cityCode ,c.areaCode as areaCode ,b.areaCode AS areaCode FROM tb_pluss_area_city a LEFT JOIN tb_pluss_area_city b on a.areaCode = b.parentAreaCode LEFT JOIN tb_pluss_area_city c ON b.areaCode = c.parentAreaCode WHERE a.areaName = #{provinceName} and b.areaName = #{cityName} AND c.areaName = #{areaName}