摘要: r=a%bif r==0 then gcd=belse a=bb=r继续上面操作lcm最小公倍数 阅读全文
posted @ 2015-06-25 11:40 vanishfan 阅读(158) 评论(0) 推荐(0)
摘要: select * from [tablename] group by SeriNohaving count(SeriNo)1 阅读全文
posted @ 2015-06-25 10:23 vanishfan 阅读(258) 评论(0) 推荐(0)
摘要: 1、概述2、原始表3、简单Group By4、Group By 和 Order By5、Group By中Select指定的字段限制6、Group By All7、Group By与聚合函数8、Having与Where的区别9、Compute 和 Compute By1、概述“Group By”从字... 阅读全文
posted @ 2015-06-25 10:21 vanishfan 阅读(188) 评论(0) 推荐(0)