sing names.txt (right click and 'Save Link/Target As...'), a 46K text file containing over five-thousand first names, begin by sorting it into alphabetical order. Then working out the
alphabetical v...
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其他好文 时间:
2014-06-20 10:37:22
阅读次数:
230
Outer Join Query Over Dblink Can Fail With
ORA-904 (Doc ID 730256.1)To BottomModified:03-May-2013Type:PROBLEMIn this
DocumentSymptomsChangesCauseSolut...
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数据库 时间:
2014-06-13 13:41:16
阅读次数:
376
Grouping Records Together Based on a Field
Problem
You
have a sequence of dictionaries or instances and you want to iterate over the data in groups based on the value of a...
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编程语言 时间:
2014-06-08 18:22:29
阅读次数:
280
接上一篇Linux 内核 链表 的简单模拟(1) 第五章:Linux内核链表的遍历/***
list_for_each - iterate over a list* @pos: the &struct list_head to use as a
loop cursor.* @...
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系统相关 时间:
2014-06-07 22:09:58
阅读次数:
451
最近公司一SSRS报表需求改变,同比店铺的选取为连续28天有销售的店铺,思考良久,发现可以利用ROW_NUMBER() OVER(PARTITION BY
COLUMN01 ORDER BY COLUMN02)来实现,ROW_NUMBER()从1开始,按照COLUMN01分组以及COLUMN02排序...
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数据库 时间:
2014-06-05 20:55:28
阅读次数:
451
题目如下:
S-Trees
A Strange Tree (S-tree) over the variable set is a binary tree representing a Boolean function
.Each path of the S-tree begins at the
root node and consists ...
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其他好文 时间:
2014-06-05 11:04:37
阅读次数:
248
More praise for FLIPPED"We flipped over this
fantastic book, its gutsy girl Juli and its wise, wonderful ending."--The
Chicago Tribune"Delightful! Del...
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其他好文 时间:
2014-06-02 20:03:59
阅读次数:
2055
一直没实际的需求而使用ntile(),今天看了下,就是按序号分组的意思。还是以student表为例select
ntile(3) over (order by score desc) as zu, name, score, provincefrom student...
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其他好文 时间:
2014-05-30 08:08:34
阅读次数:
294
1.对序列进行分组的函数(摘自web.py源码utils.py文件中) 1 def
group(seq, size): 2 """ 3 Returns an iterator over a series of lists of length
size from iterable. ...
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编程语言 时间:
2014-05-28 04:21:00
阅读次数:
365
能举个例子吗?我也知道是括号里面取得值 但是哪个和哪个括号不清楚
还有是小括号中括号大括号也不清楚 能举个实例吗?$1,$2...是表示的小括号里的内容 $1是第一个小括号里的 ,$2是第2个小括号里的 比如
/gai([\w]+?)over([\d]+)/ 匹配 gainover123 $1= 括...
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其他好文 时间:
2014-05-26 00:04:22
阅读次数:
282