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Qlikview Data Modeling---Concatenation
这篇Blog主要介绍下通过Concatenation(串联) 事实表来避免loops 和 synthetic keys: Qlikview里的建模通常都是是很简单的。通常我们只要重新命名一些子段的名字来防止或者建立表之间的自动关联。 但是有时候我们只是通过简单的重命名是解决不了问题的。例如我们有多个事实表和其他的表有多个关联,这样通常会产生可怕的 synthetic key,更可怕的是会...
分类:其他好文   时间:2014-11-08 15:18:01    阅读次数:265
leetcode第29题--Substring with Concatenation of All Words
problem:You are given a string,S, and a list of words,L, that are all of the same length. Find all starting indices of substring(s) in S that is a con...
分类:其他好文   时间:2014-10-22 00:47:47    阅读次数:203
LeetCode-Substring with Concatenation of All Words
题目:You are given a string,S, and a list of words,L, that are all of the same length. Find all starting indices of substring(s) in S that is a concaten...
分类:其他好文   时间:2014-10-22 00:29:15    阅读次数:189
Substring with Concatenation of All Words
You are given a string,S, and a list of words,L, that are all of the same length. Find all starting indices of substring(s) in S that is a concatenati...
分类:其他好文   时间:2014-10-06 14:58:50    阅读次数:148
[Leetcode] Substring with Concatenation of All Words
You are given a string,S, and a list of words,L, that are all of the same length. Find all starting indices of substring(s) in S that is a concatenati...
分类:其他好文   时间:2014-10-01 17:00:11    阅读次数:170
[Java Performance] 字符串拼接注意事项
字符串拼接(String Concatenation) // 编译器优化前 String answer = integerPart + "." + mantissa; // 编译器优化后 String answer = new StringBuilder(integerPart).append(".").append(mantissa).toString(); 因为编译器会对字符串的...
分类:编程语言   时间:2014-09-26 13:22:28    阅读次数:222
LeetCode 29 Substring with Concatenation of All Words
You are given a string, S, and a list of words, L, that are all of the same length. Find all starting indices of substring(s) in S that is a concatenation of each word in L exactly once and without an...
分类:其他好文   时间:2014-09-15 14:22:39    阅读次数:222
PHP 字符串
字符串变量用于存储并处理文本片段。PHP 中的字符串字符串变量用于包含字符串的值。连接运算符(Concatenation Operator)连接运算符 (.) 用于把两个字符串值连接起来。strlen() 函数strlen() 函数用于计算字符串的长度。";$varNew = $varFir.$va...
分类:Web程序   时间:2014-09-14 23:18:47    阅读次数:301
[LeetCode]Substring with Concatenation of All Words
You are given a string, S, and a list of words, L, that are all of the same length. Find all starting indices of substring(s) in S that is a concatenation of each word in L exactly once and without an...
分类:其他好文   时间:2014-09-13 09:27:24    阅读次数:202
POJ - 2406 Power Strings (KMP循环节)
Description Given two strings a and b we define a*b to be their concatenation. For example, if a = "abc" and b = "def" then a*b = "abcdef". If we think of concatenation as multiplication, exponenti...
分类:其他好文   时间:2014-09-13 09:23:34    阅读次数:197
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