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sql 分组后 组内排名
语法:ROW_NUMBER() OVER(PARTITION BY COLUMN ORDER BY COLUMN)简单的说row_number()从1开始,为每一条分组记录返回一个数字,这里的ROW_NUMBER() OVER (ORDER BY xlh DESC) 是先把xlh列降序,再为降序以后...
分类:数据库   时间:2014-06-28 18:08:45    阅读次数:574
leetcode - Binary Tree Level Order Traversal i ii
题目:Binary Tree Level Order Traversal i iii和ii的差别仅在于最后将结果逆序一下就行了,算法上基本相同个人思路:1、二叉树的层次遍历,我们一层一层地处理,用一个队列(A队列)将每一层的所有节点按照从左到右的顺序入队2、待该队列的所有节点都出队,并且用另外一个队...
分类:其他好文   时间:2014-06-28 17:01:33    阅读次数:235
分页SQL
一、Oracle1、SQL-- order bySELECT * FROM (SELECT ORACLEPAGESQL1.*, ROWNUM RN FROM (SELECT * FROM (SELECT IDX, NAME, CH_NAME FR...
分类:数据库   时间:2014-06-28 16:54:16    阅读次数:282
LeetCode: Add Two Numbers
You are given two linked lists representing two non-negative numbers. The digits are stored in reverse order and each of their nodes contain a single ...
分类:其他好文   时间:2014-06-28 14:31:12    阅读次数:201
opencart邮件模板
在opencart中,几乎所有的版权信息都写在language里,我们找到catalog/language/your language/mail/order.php这个语言文件,找到$_['text_new_powered'] = 'Powered By OpenCart.';把单引号里的内容替换成...
分类:其他好文   时间:2014-06-28 12:20:12    阅读次数:286
SQL 相关
SET STATISTICS TIME ON记录查询的相关数据生成随机GuidSELECT NewID()按照某一列排序并生成序号select Row_Number() OVER (ORDER BY Name) [Index] ,Name,ID ,NewID() RandomCod...
分类:数据库   时间:2014-06-28 11:05:19    阅读次数:266
poj2301
Beat the Spread!Time Limit:1000MSMemory Limit:65536KTotal Submissions:17794Accepted:8484DescriptionSuperbowl Sunday is nearly here. In order to pass t...
分类:其他好文   时间:2014-06-24 10:53:44    阅读次数:203
Part4 – OPENVSWITCH – Playing with Bonding on Openvswitch
Bonding is aggregation multiple links to single link in order to increase throughput and achieve redundancy in case one of links fails. At least, offi...
分类:其他好文   时间:2014-06-24 10:28:42    阅读次数:211
分析函数
SQL> select deptno,ename,sal 2 from emp 3 order by deptno;DEPTNO ENAME SAL---------- ---------- ---------- 10 CLARK 2450 KING 5000 MILLER 1300 20 SMIT...
分类:其他好文   时间:2014-06-24 09:43:15    阅读次数:189
sql语句学习
select top 1 id from AddWorkFlow order by id desc返回查询结果中前几条数据select count(1) as total from Base_Users where DeptId='101010102' and iDel=0返回查询的记录个数sele...
分类:数据库   时间:2014-06-23 06:31:15    阅读次数:247
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