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转 SQL行转列汇总
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...
分类:数据库   时间:2014-12-17 10:36:39    阅读次数:265
Find Minimum in Rotated Sorted Array
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. ...
分类:其他好文   时间:2014-12-13 09:38:26    阅读次数:139
Find Minimum in Rotated Sorted Array II
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...
分类:其他好文   时间:2014-12-13 09:37:25    阅读次数:157
Search in Rotated Sorted Array
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...
分类:其他好文   时间:2014-12-10 19:50:10    阅读次数:154
快速排序
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...
分类:编程语言   时间:2014-12-09 22:57:55    阅读次数:213
LeetCode Find Minimum in Rotated Sorted Array II
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...
分类:其他好文   时间:2014-12-08 23:09:33    阅读次数:347
Search in Rotated Sorted Array
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)....
分类:其他好文   时间:2014-12-08 17:35:48    阅读次数:155
Find Minimum in Rotated Sorted Array
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 ...
分类:其他好文   时间:2014-12-08 15:38:43    阅读次数:141
sqlserver报表统计——参数化动态PIVOT行转列
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...
分类:数据库   时间:2014-12-08 12:22:57    阅读次数:299
leetcode. Find Minimum in Rotated Sorted Array
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...
分类:其他好文   时间:2014-12-07 23:05:41    阅读次数:137
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