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LeetCode--Remove Linked List Element
Remove all elements from a linked list of integers that have valueval.ExampleGiven:1 --> 2 --> 6 --> 3 --> 4 --> 5 --> 6,val= 6Return:1 --> 2 --> 3 --...
分类:其他好文   时间:2015-05-18 12:48:32    阅读次数:108
SQL 语句及关键字的用法
一、SELECTselect [ALL|DISTINCT] select_list[into new table]FROM table_source[where serch_conditaion][GROUP BY group_by_expression][Having serch_conditai...
分类:数据库   时间:2015-05-18 12:43:35    阅读次数:166
Oracle自带的exception
存储过程中自带的exception:--查询人员资料历史 BEGIN SELECT * INTO Po_Sac01 FROM Sac01 WHERE Aac001 = Pi_Aac001 AND Pi_Jfny BETWEE...
分类:数据库   时间:2015-05-18 12:34:20    阅读次数:97
sql 按时间二段排序
业务需用为数据按倒序排序,当天数据排在以往日期前面,但当天数据需按小时进行升序排列select *from( select vcTitle,dtBeginDate,case when dtBeginDate<=getdate() then 1 else 2 end tt from TableA )....
分类:数据库   时间:2015-05-18 12:30:25    阅读次数:164
google为什么将爬虫从python移植到C++
这是好几年前Quora上的一个问题,有点过时,但看了之后感觉不错,就总结了一下原文链接:http://www.quora.com/Why-did-Google-move-from-Python-to-C++-for-use-in-its-crawler1.谷歌有强大的C++库支持分布式系统2.C++...
分类:编程语言   时间:2015-05-18 12:14:30    阅读次数:276
The Linker Is Not a Magical Program
The Linker Is Not a Magical ProgramWalter BrightDEPRESSiNGLY OFTEN (happened to me again just before I wrote this), the view that many programmers have of the process of going from source code to a sta...
分类:其他好文   时间:2015-05-18 11:00:22    阅读次数:121
对Oracle 并行的误解2--其实会锁全表
我一直以为Oracle只会锁住需要修改的数据,但在并行下是这样的,并行update是会锁全表的,下面的实验: session1: SQL> select sid from v$mystat where rownum=1;        SID ----------        11 SQL> select sid from v$mystat where rownum=1; SQL>...
分类:数据库   时间:2015-05-18 10:51:13    阅读次数:251
【Oracle】删除正在连接的用户
1.查询用户的连接状态Select username,sid,serial# from v$session where username='XY1027';USERNAME SID SERIAL#------------------------------ ---------- ----------...
分类:数据库   时间:2015-05-18 10:37:28    阅读次数:137
csu 1548: Design road(三分)
1548: Design road Time Limit: 2 Sec  Memory Limit: 256 MB Submit: 243  Solved: 115 [Submit][Status][Web Board] Description You need to design road from (0, 0) to (x, y) in plane with the lo...
分类:其他好文   时间:2015-05-18 09:06:42    阅读次数:89
题目2:MySQL----------Second Highest Salary
Write a SQL query to get the second highest salary from the Employee table. +----+--------+ | Id | Salary | +----+--------+ | 1 | 100 | | 2 | 200 | | 3 | 300 | +----+--------+ For exa...
分类:数据库   时间:2015-05-18 09:02:06    阅读次数:145
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