邮编的前两位数字代表什么内容?

页面:/news/view-1189165/ | 耗时:0.7697 s | 内存:1.89 MB | 查询:4 | 缓存读取:4 写入:0 | 加载文件:23
select * from tbl_Articles WHERE ArticleID=1189165 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1189165 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1189165 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(578562,762745,797787,2227903,415560,841884,1143973,1565150,600247,606124,721517,654760,3483846,981998,2580408,602822,2609495,426595,418471,597810,589412,380557,470879,1065352,798453,633416,593469,850188,383330,474246) ORDER BY field (ArticleID,578562,762745,797787,2227903,415560,841884,1143973,1565150,600247,606124,721517,654760,3483846,981998,2580408,602822,2609495,426595,418471,597810,589412,380557,470879,1065352,798453,633416,593469,850188,383330,474246)