In data warehouse design, frequently we run into a situation where there are yes/no indicator fields in the source system. Through business analysis, we know it is necessary to keep such informatio...
分类:
其他好文 时间:
2015-04-16 10:36:55
阅读次数:
228
(1)数据记录筛选:
sql= "select * from 数据表 where 字段名 = 字段值 order by 字段名 [desc]"
sql = "select * from 数据表 where 字段名 like '%字段值%' order by 字段名 [desc]"
sql = "select top10 * from 数据表 where 字段名...
分类:
数据库 时间:
2015-04-16 09:09:45
阅读次数:
182
Given a range [m, n] where 0 >=1; 9 n>>=1;10 }11 return res;12 }13 14 int bitvalue(int m, int n) {15 i...
分类:
其他好文 时间:
2015-04-16 09:01:22
阅读次数:
356
题目:Givennnon-negative integersa1,a2, ...,an, where each represents a point at coordinate (i,ai).nvertical lines are drawn such that the two endpoints ...
分类:
其他好文 时间:
2015-04-16 01:17:43
阅读次数:
127
看图说话比较直观:对比复制前后的数据表:使用SQL语句:UPDATE OR ROLLBACK Content SET YINBIAO = YINBIAO2, GESHU = GESHU2 WHERE YINBIAO2 IN (SELECT YINBIAO2 FROM Content WHERE PI...
分类:
数据库 时间:
2015-04-16 00:59:55
阅读次数:
223
--判断某个存储过程是否存在if exists (select * from sysobjects where id = object_id(N'[p_CreateTable]') and OBJECTPROPERTY(id, N'IsProcedure') = 1) drop procedure ...
分类:
数据库 时间:
2015-04-15 22:47:49
阅读次数:
185
标题:Gas Station通过率:25.7%难度:中等There areNgas stations along a circular route, where the amount of gas at stationiisgas[i].You have a car with an unlimite...
分类:
其他好文 时间:
2015-04-15 22:46:35
阅读次数:
146
今天在看一个遗留系统的数据表的时候发现平时查找的视图是FULL OUT JOIN的,导致平时的数据记录要进行一些限制性处理,其实也可以设置视图各表为右外连接并在视图上设置各列的排序和筛选条件就可以达到效果。联接条件可在FROM或WHERE子句中指定,建议在FROM子句中指定联接条件。WHERE和HA...
分类:
数据库 时间:
2015-04-15 19:12:17
阅读次数:
179
http://gashero.iteye.com/blog/2075324// Playground - noun: a place where people can play//haha 没有分好,编译器推断类型,好玩,空格严格限制import UIKitvar str = "Hello, pla...
分类:
编程语言 时间:
2015-04-15 18:59:22
阅读次数:
146
Givennnon-negative integers representing an elevation map where the width of each bar is 1, compute how much water it is able to trap after raining.Fo...
分类:
移动开发 时间:
2015-04-15 16:50:03
阅读次数:
117