Hint:ORDERED和USE_NL ORDERED好理解,就是表示根据 from 后面表的顺序join,从左到右,左边的表做驱动表 use_nl(t1,t2):表示对表t1、t2关联时采用嵌套循环连接,其并不能让优化器确定谁是驱动表或谁是被驱动的表 USE_NL(),先看看oracle doc怎 ...
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数据库 时间:
2017-10-10 13:19:58
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185
Given a string s, find the longest palindromic substring in s. You may assume that the maximum length of s is 1000. Example: Input: "babad" Output: "b ...
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其他好文 时间:
2017-10-09 23:57:19
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231
抓取策略: 为了改变SQL语句执行的方式 Hibernate的抓取策略只影响get/load方法,对HQL是不影响的 查询一方有三种策略: 默认使用fetch="select"策略 会执行多条SQL语句 可以使用fetch="join"策略 会执行左外连接的SQL语句 可以使用fetch="subs ...
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Web程序 时间:
2017-10-09 13:09:12
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192
Note: 1. Find a increasing digits number. It's kind of longest increasing subsequence but with fixed size. 2. Remember to remove the zeros from beginn ...
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其他好文 时间:
2017-10-08 16:50:40
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168
Given a binary tree, find the length of the longest path where each node in the path has the same value. This path may or may not pass through the roo ...
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其他好文 时间:
2017-10-08 00:55:06
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125
Given a binary tree, find the length of the longest path where each node in the path has the same value. This path may or may not pass through the roo ...
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其他好文 时间:
2017-10-07 23:30:53
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221
5. Longest Palindromic Substring Given a string s, find the longest palindromic substring in s. You may assume that the maximum length of s is 1000. E ...
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其他好文 时间:
2017-10-07 18:37:52
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127
Given a 01 matrix M, find the longest line of consecutive one in the matrix. The line could be horizontal, vertical, diagonal or anti-diagonal. Exampl ...
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其他好文 时间:
2017-10-07 12:19:16
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291
Given a string, find the length of the longest substring without repeating characters. Examples: Given "abcabcbb", the answer is "abc", which the leng ...
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其他好文 时间:
2017-10-06 10:36:15
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140
列表 <ul> 无序列表</ul> unordered list <li>list item</li> 无序列表默认用实心圆圈做引导标记 <ol start=-1> 有序列表</ol> ordered list start属性为第一条序号 <dl> 定义的列表</dl> <dt>词条</dt> <d ...
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Web程序 时间:
2017-10-05 22:38:44
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265