1、前言 公司最近mysql数据库切换oracle,oracle很久没用了有点陌生,刚开始做分页就遇到ROWNUM和ORDER BY的优先级比较。查了资料,网上都说ROWNUM的优先级高于ORDER BY,即先取数据的结果,再对结果进行排序。抱着怀疑的态度写了两天SQL语句,结果有的是ROWNUM....
分类:
数据库 时间:
2015-07-18 14:02:18
阅读次数:
204
题目:
Given an array with n objects colored red, white or blue, sort them so that objects of the same color are adjacent, with the colors in the order red, white and blue.
Here, we will use the ...
分类:
编程语言 时间:
2015-07-18 12:44:13
阅读次数:
148
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 length.
分析:
要求,移除具有n个元素的数组中所有指定的数字,返回删除后的数组长度。看似简单,其实也能体现一个人的编程水平。...
分类:
其他好文 时间:
2015-07-18 12:42:49
阅读次数:
146
题目:
Given a set of distinct integers, nums, return all possible subsets.
Note:
Elements in a subset must be in non-descending order.The solution set must not contain duplicate subsets.
...
分类:
编程语言 时间:
2015-07-18 12:36:29
阅读次数:
151
Winters are just damn freezing cold in Nvodsk! That's why a group ofnfriends prefers to take a taxi, order a pizza and call girls. The phone numbers i...
分类:
其他好文 时间:
2015-07-18 12:30:04
阅读次数:
107
1。面向对象的有3主要特点,这封装。演替,多态性。2,假设一种药物被设置为继承必须指定NOTFINAL,此类不能被继承或。3,假设你想检查出的数据进行排序,可以使用MAP要么ORDER定义函数。4。在一个类中。默认提供的构造方法须要传递所有的属性内容。假设用户有须要,也能够利用CONSTRUCTOR...
分类:
其他好文 时间:
2015-07-17 20:45:54
阅读次数:
92
DescriptionYou are given a sequence ofnintegersa1, a2, ... , anin non-decreasing order. In addition to that, you are given several queries consisting ...
分类:
其他好文 时间:
2015-07-17 20:29:49
阅读次数:
109
DescriptionFor the daily milking, Farmer John'sNcows (1 ≤N≤ 50,000) always line up in the same order. One day Farmer John decides to organize a game o...
分类:
其他好文 时间:
2015-07-17 18:35:31
阅读次数:
86
个人觉得对sql的玩转其实是sql中各种函数方法的理解的透彻。原始数据表要求查询的结果排序其实刚看题目可能觉得要用group by但是再网下继续思考可能就没有思路了但是如果你接触过over的试用可能问题就不是那么难了具体的sql语句如下select *from t_jeff2 order by m....
分类:
数据库 时间:
2015-07-17 18:20:17
阅读次数:
157
With temp As( Select ROW_NUMBER() over(partition by LogisticsPlan order by createon) rowID,ID from LogisticsPlan Where LogisticsPlan IN( 'AGD...
分类:
其他好文 时间:
2015-07-17 11:46:56
阅读次数:
116