over()，包含三个分析子句:分组(partition by), 排序(order by), 窗口(rows) ，他们的使用形式如下：over(partition by xxx order by yyy rows between zzz)。
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数据库 时间：
2015-06-05 12:17:37
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142
Contains Duplicate III问题：Given an array of integers, find out whether there are two distinct indicesiandjin the array such that the difference between...
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其他好文 时间：
2015-06-05 12:13:12
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127
参考：questions on M5 stats、difference between demand and overall accesses当用gem5中classic memory mode运行测试集后，查看stats.txt，可看到如下结果：system.l2.ReadExReq_accesses::total 12365514 #...
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数据库 时间：
2015-06-04 17:04:34
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230
-- 找出在(任何年份)2月受聘的所有员工
select * from emp where to_number(to_char(hiredate, 'mm')）= 2;
-- 对每个员工，显示其加入公司的天数
select ename, round(sysdate - hiredate) Days from emp;
-- 显示姓名中任意位置包含“A”的所有员工姓名
select * from emp where upper(ename) like '%A%';
-- 以年月日方式显示所有员工的服务年...
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数据库 时间：
2015-06-04 01:04:31
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207
To be honest, this problem is designed to let you use stacks. However, I don't. In fact, you only need to keep a flagand switch it between falseandtru...
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其他好文 时间：
2015-06-03 00:49:58
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232
I am going to my home. There are many cities and many bi-directional roads between them. The cities are numbered from 0 to n-1 and each road has a cost. There are m roads. You are given the number of m...
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其他好文 时间：
2015-06-02 22:03:57
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175
Given an array of integers and an integer k, find out whether there there are two distinct indices i and j in the array such that nums[i] = nums[j] and the difference between i and j is at most k.直接使用循...
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其他好文 时间：
2015-06-02 17:54:07
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87
1, top and left relative to the document
jquery
.offset()
Get the current coordinates of the first element, or set the coordinates of every element, in the set of matched elements, relative to...
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编程语言 时间：
2015-06-02 17:49:20
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84
ps:写这篇文章的目的是尝试下新的markdown编辑器哈哈简介
ORMLite provides a lightweight Object Relational Mapping between Java classes and SQL databases. There are certainly more mature ORMs which provide this functionality...
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移动开发 时间：
2015-06-02 15:22:59
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228
CHAPTER6 Filtering Your Data
本章介绍WHERE从句.
predicates
Comparison,BETWEEN,IN, LIKE, and IS NULL.
We’ll cover theother two—Quantified and EXISTS—in Chapter 11, Subqueries.
Compariso...
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数据库 时间：
2015-06-02 13:30:43
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211
