摘要: 取出重复的客运车班次 SELECT CID, FROM_CITY, TO_CITY, TICKET_PRICE FROM CITY WHERE CID IN (SELECT DISTINCT FIRST_VALUE(CCID) OVER(PARTITION BY FROM_CITY, TO_CITY 阅读全文
posted @ 2015-04-24 23:47 智能先行者 阅读(408) 评论(0) 推荐(0) 编辑