2014年8月20日
两表连接合并
摘要： select a.pdate,sum(sumcost) as sumcost,sum(sumincome) as sumincome from (select pdate,0 as sumcost,sumincome from Bunion all select pdate,sumcost,0 as... 阅读全文
posted @ 2014-08-20 09:36 jlf19881031 阅读(168) 评论(0) 推荐(0) 编辑