码迷,mamicode.com
首页 >  
搜索关键字:union all    ( 25526个结果
T-SQL函数及用法--转
转自http://www.cnblogs.com/qixuejia/archive/2010/07/14/1777105.html1.聚合函数(1)AVG函数功能返回组中值的平均值。空值将被忽略语法AVG([ ALL | DISTINCT ] expression)(2)MAX函数功能返回表达式的最...
分类:数据库   时间:2014-05-05 23:23:05    阅读次数:560
for dummies,Inside Out,考试用书之我见
这3个系列的书我买了不少本,虽然没有都读完,但是还是要做个阶段性的评价for dummies:即阿呆系列,外教老师Chris说那是入门的书,知识量少,我觉得自己开辟一个新的学习计划时,这个系列的书是很有帮助的,细分两个子系列all-in-one for dummies:这个系列的书厚些,通常是几本书...
分类:其他好文   时间:2014-05-05 23:16:11    阅读次数:272
并查集类的c++封装,比较union_find algorithm四种实现方法之间的性能差别
并查集类的c++封装,比较union_find algorithm四种实现方法之间的性能差别...
分类:编程语言   时间:2014-05-05 21:25:44    阅读次数:324
【LeetCode】Remove Element
题目: Given an array and a value, remove all instances of that value in place and return the new length. The order of elements can be changed. It doesn't matter what you leave beyond the new len...
分类:其他好文   时间:2014-05-05 12:58:57    阅读次数:294
codeforces A. Array题解
Vitaly has an array of n distinct integers. Vitaly wants to divide this array into three non-empty sets so as the following conditions hold: The product of all numbers in the first set is less ...
分类:其他好文   时间:2014-05-03 23:51:19    阅读次数:621
unicode string和ansi string的转换函数及获取程序运行路径的代码
#pragma once#include namespace stds { class tool { public: std::string ws2s(const std::wstring& ws) { std::string curLocale = setlocale(LC_ALL...
分类:其他好文   时间:2014-05-03 22:25:17    阅读次数:318
刚整理的SQL常见替代点
1、能用DISTINCT的就不用GROUP BY    SELECT OrderID FROM Details WHERE UnitPrice > 10 GROUP BY OrderID    可改为:  SELECT DISTINCT OrderID FROM Details WHERE UnitPrice > 10  2.能用UNION ALL就不要用UNION     UNION A...
分类:数据库   时间:2014-05-03 21:31:24    阅读次数:342
UVA之11462 - Age Sort
【题目】 B Age Sort Input: Standard Input Output: Standard Output   You are given the ages (in years) of all people of a country with at least 1 year of age. You kn...
分类:其他好文   时间:2014-05-03 16:51:42    阅读次数:427
Leetcode:Subsets 求数组的所有子集
Given a set of distinct integers, S, return all possible subsets. Note: Elements in a subset must be in non-descending order.The solution set must not contain duplicate subsets. For exa...
分类:其他好文   时间:2014-05-03 15:47:53    阅读次数:289
HDU 4355 Party All the Time 三分
点击打开链接 Party All the Time Time Limit: 6000/2000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 2961    Accepted Submission(s): 939 Problem Description...
分类:其他好文   时间:2014-05-03 15:30:56    阅读次数:374
© 2014 mamicode.com 版权所有  联系我们:gaon5@hotmail.com
迷上了代码!