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Oralce聚合多行
拼接的字符串长度满足varchar2(4000)时, 可以用 LISTAGG(NAME, '_') WITHIN GROUP(ORDER BY LEVEL_T DESC) 当拼接大段文本时,采用 10g增加的函数 COLLECT函数 http://www.oracle-developer.net/d ...
分类:其他好文   时间:2016-08-12 16:39:06    阅读次数:164
tomcat启动超时问题
当启动tomcat时候出现 Server Tomcat v6.0 Server at localhost was unable to start within 45 seconds. If the server requires more time, try increasing the timeo ...
分类:其他好文   时间:2016-08-09 09:27:58    阅读次数:139
Leetcode13 Roman to Integer
题意: Given a roman numeral, convert it to an integer. Input is guaranteed to be within the range from 1 to 3999. 分析: 开始准备采用将罗马数字的字符串先划分千位,百位等,但是实际操作起来代 ...
分类:其他好文   时间:2016-08-08 22:48:41    阅读次数:173
HackerRank "Flatland Space Stations"
A bit Greedy can achieve O(m) - the mid station between 2 adjacent cities has the longest distance within that range. ...
分类:其他好文   时间:2016-08-07 15:14:47    阅读次数:208
Nginx - HTTP Configuration, Module Variables
The HTTP Core module introduces a large set of variables that you can use within the value of directives. Be careful though, as only a handful of dire ...
分类:Web程序   时间:2016-08-06 21:57:23    阅读次数:246
context:propertyPlaceholder
Activates replacement of ${...} placeholders by registering a PropertySourcesPlaceholderConfigurer within the application context. Properties will be ...
分类:其他好文   时间:2016-08-06 08:38:03    阅读次数:189
【原创】ab结果参数详解
解释如下: Percentage of the requests served within a certain time (ms) 表示小于某一时间的请求数在全过程中的占比 Connection Times (ms) - 来自 http://my.oschina.net/lubia/blog/17 ...
分类:其他好文   时间:2016-08-05 11:28:18    阅读次数:419
[LintCode] Integer to Roman 整数转化成罗马数字
Given an integer, convert it to a roman numeral. The number is guaranteed to be within the range from 1 to 3999. Given an integer, convert it to a rom ...
分类:其他好文   时间:2016-08-01 10:28:50    阅读次数:182
[LintCode] Roman to Integer 罗马数字转化成整数
Given a roman numeral, convert it to an integer. The answer is guaranteed to be within the range from 1 to 3999. Have you met this question in a real ...
分类:其他好文   时间:2016-08-01 00:23:46    阅读次数:161
POJ1572 Automatic Editing 字符串替换,replace就够了
题意不难理解,但是一开始还是没有看清楚题目。Replace the first occurrence of the find string within the text by the replace-by string, then try to perform the same replaceme ...
分类:其他好文   时间:2016-07-30 11:51:36    阅读次数:229
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