1、PIVOT用于将列值旋转为列名(即行转列)2、UNPIVOT用于将列名称旋转为列值(即列转行)PIVOT用于将列值旋转为列名(即行转列),在 SQL Server2000可以用聚合函数配合CASE语句实现PIVOT 的一般语法是:PIVOT(聚合函数(列) FOR 列 in (…) )AS P注...
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数据库 时间:
2014-12-17 10:36:39
阅读次数:
265
Catalogue: array-分治法搜索
Question
Suppose a sorted array is rotated at some pivot unknown to you beforehand.
(i.e., 0 1 2 4 5 6 7 might become 4
5 6 7 0 1 2).
Find the minimum element.
...
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其他好文 时间:
2014-12-13 09:38:26
阅读次数:
139
Catalogue:array - 分治法
Question
Suppose a sorted array is rotated at some pivot unknown to you beforehand.
(i.e., 0 1 2 4 5 6 7 might become 4 5 6 7 0 1 2).
Find the minimum element.
The array may...
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其他好文 时间:
2014-12-13 09:37:25
阅读次数:
157
Suppose a sorted array is rotated at some pivot unknown to you beforehand.
(i.e., 0 1 2 4 5 6 7 might become 4
5 6 7 0 1 2).
You are given a target value to search. If found in the array retur...
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其他好文 时间:
2014-12-10 19:50:10
阅读次数:
154
快速排序思想:通过一趟排序将待排序记录分割成独立的两部分(取出一个分割点),分割点左边的记录均<分割点,分割点右边的记录均>分割点;再分别对左边和右边的记录进行排序;一趟快速排序的具体做法:1.附设两个直针low和high,他们的初值分别为low和high,设枢轴记录的关键字为pivot,2.则首先...
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编程语言 时间:
2014-12-09 22:57:55
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213
Follow up for "Find Minimum in Rotated Sorted Array":
What if duplicates are allowed?
Would this affect the run-time complexity? How and why?
Suppose a sorted array is rotated at some pivot unkno...
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其他好文 时间:
2014-12-08 23:09:33
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347
Search in Rotated Sorted ArraySuppose a sorted array is rotated at some pivot unknown to you beforehand.(i.e.,0 1 2 4 5 6 7might become4 5 6 7 0 1 2)....
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其他好文 时间:
2014-12-08 17:35:48
阅读次数:
155
Suppose a sorted array is rotated at some pivot unknown to you beforehand.
(i.e., 0 1 2 4 5 6 7 might become 4
5 6 7 0 1 2).
Find the minimum element.
You may assume no duplicate exists in ...
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其他好文 时间:
2014-12-08 15:38:43
阅读次数:
141
先列出所有表结构:
--title 报表
--table 实收水费:hx_t_received
--字段 收费部门id:hx_fdepartmentid 1、收费部门名称:hx_fdepartmentname 应收水费信息ID:hx_freceivableid
--收费类别:hx_ftype (水费(1):再分[开户(table) 供水类别:自来水(100000001)==水费,中水(10...
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数据库 时间:
2014-12-08 12:22:57
阅读次数:
299
Suppose a sorted array is rotated at some pivot unknown to you beforehand.(i.e.,0 1 2 4 5 6 7might become4 5 6 7 0 1 2).Find the minimum element.You m...
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其他好文 时间:
2014-12-07 23:05:41
阅读次数:
137