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Gray Code(格雷码)
The gray code is a binary numeral system where two successive values differ in only one bit.Given a non-negative integer n representing the total numb...
分类:其他好文   时间:2015-01-06 19:55:57    阅读次数:159
JDBC中PreparedStatement和Statement的区别
共同点:PreparedStatement和Statement都是用来执行SQL查询语句的API之一。不同点:在PreparedStatement中,当我们经常需要反复执行一条结构相似的sql语句,比如:insert into table values(0,'first',1);insert in....
分类:数据库   时间:2015-01-06 17:32:08    阅读次数:139
JS篇 jQuery官方API使用笔记
使用jQuery时,有些API容易混淆,通过API、源码记录心得如下:1. $elem.attr()、$elem.prop() 1)Attribute values are strings with the exception of a few attributes such as value...
分类:Windows程序   时间:2015-01-06 17:23:06    阅读次数:185
PHP中该怎样防止SQL注入?
原文:PHP中该怎样防止SQL注入? 因为用户的输入可能是这样的: ? 1 value'); DROP TABLE table;-- 那么SQL查询将变成如下: ? 1 INSERT INTO `table` (`column`) VALUES('value'); DROP TABLE table;...
分类:数据库   时间:2015-01-06 15:26:28    阅读次数:161
跨表循环写插入sql语句
其实就是拼接sql 拼接出来的select 'INSERT INTO [Gas_CN_Trade_B2C].[dbo].[Common_Street] values ('+convert(varchar(20),ID)+','+StreetName+','''+''''+','+substring(...
分类:数据库   时间:2015-01-06 15:11:54    阅读次数:136
[leetcode] Unique Binary Search Trees II
题目:(DP)Givenn, generate all structurally uniqueBST's(binary search trees) that store values 1...n.For example,Givenn= 3, your program should return al...
分类:其他好文   时间:2015-01-06 00:41:27    阅读次数:147
Leetcode:Unique Binary Search Trees
Givenn, how many structurally uniqueBST's(binary search trees) that store values 1...n?For example,Givenn= 3, there are a total of 5 unique BST's. 1.....
分类:其他好文   时间:2015-01-06 00:37:47    阅读次数:204
Valid timeZone Values(转)
https://www.vmware.com/support/developer/vc-sdk/visdk400pubs/ReferenceGuide/timezone.html Valid timeZone values are based on the tz (timezone) databas...
分类:其他好文   时间:2015-01-05 18:33:46    阅读次数:141
不完全恢复(基于时间)
1.先做一次冷全备3.SQL> insert into t1 values(1,'cyf1');1 row created.SQL> commit ;Commit complete.3.SQL> select to_char(sysdate ,'yyyy-mm-dd hh24:mi:ss') fro...
分类:其他好文   时间:2015-01-05 16:22:59    阅读次数:122
Linux下Mysql常用
1,查看当前用户权限 select host,password, user from user;2,用户 创建用户 insert into mysql.user(Host,User,Password,ssl_cipher,x509_issuer,x509_subject) values("Ho...
分类:数据库   时间:2015-01-05 16:19:26    阅读次数:199
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