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mysql行转列利用case when
CREATE TABLE bill ( id CHAR(36) NOT NULL, customer INT(255) NULL DEFAULT NULL COMMENT ‘顾客’, shop INT(255) NULL DEFAULT NULL COMMENT ‘消费店铺’, money DECIMAL(10,2) NULL DEFAULT NULL COM...
分类:数据库   时间:2015-08-28 23:24:21    阅读次数:284
USACO 1.1 Greedy Gift Givers
Greedy Gift GiversA group of NP (2 ≤ NP ≤ 10) uniquely named friends has decided to exchange gifts of money. Each of these friends might or might not ...
分类:其他好文   时间:2015-08-28 19:10:32    阅读次数:154
House Robber && House RobberⅡ
House Robber && House RobberⅡ House Robber You are a professional robber planning to rob houses along a street. Each house has a certain amount of money stashed, the only constraint...
分类:其他好文   时间:2015-08-28 13:16:56    阅读次数:146
IE兼容性问题之trim
在ie 7 8浏览器中使用如下代码会报错$("#money").val().trim(); 经查阅资料发现时兼容性问题,解决方案如下,在js中添加如下代码 String.prototype.trim = function () { return this .replace(/^\s\s*/, '' ).replace(/\s\s*$/, '' ); } 这样就可以解决问题。 参考文档 htt...
分类:其他好文   时间:2015-08-28 09:35:59    阅读次数:202
ACDream 1408 "Money, Money, Money" (规律)
"Money, Money, Money"Special JudgeTime Limit:2000/1000MS (Java/Others)Memory Limit:128000/64000KB (Java/Others)SubmitStatisticNext ProblemProblem Desc...
分类:其他好文   时间:2015-08-27 00:14:30    阅读次数:211
ORACLE/SQL用函数进行每年,每月,每周,每日的数据汇总
15/03/21??用函数进行每年,每月,每周,每日的数据汇总 假设一个销售明细表?sale_detail?含有?国家(country),销售时间(sale_time),销售额(sale_money)..等等 需要用到求和函数?SUM()和分组子句?GRO...
分类:数据库   时间:2015-08-26 22:46:42    阅读次数:336
ORACLE/SQL用函数进行每年,每月,每周,每日的数据汇总
用函数进行每年,每月,每周,每日的数据汇总 假设一个销售明细表 sale_detail 含有 国家(country),销售时间(sale_time),销售额(sale_money)..等等 需要用到求和函数 SUM()和分组子句 GROUP BY 按国家和年份分组进行求和汇总(对每一个国家的...
分类:数据库   时间:2015-08-21 22:56:43    阅读次数:295
lightoj 1079 Just another Robbery 解题心得
原题:DescriptionAs Harry Potter series is over, Harry has no job. Since he wants to make quick money, (he wants everything quick!) so he decided to rob ...
分类:其他好文   时间:2015-08-21 21:02:58    阅读次数:155
第六周 N题
DescriptionAs Harry Potter series is over, Harry has no job. Since he wants to make quick money, (he wants everything quick!) so he decided to rob ban...
分类:其他好文   时间:2015-08-20 10:15:53    阅读次数:148
ACM 概率&&动态规划
DescriptionAs Harry Potter series is over, Harry has no job. Since he wants to make quick money, (he wants everything quick!) so he decided to rob ban...
分类:其他好文   时间:2015-08-19 23:05:19    阅读次数:460
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