ContentsOverview and IntroductionHo
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2024-07-23 09:51:32
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Oracle/PLSQL Built-In Functions
今天发现的一个很不错的网站，对常见函数有个很好的讲解，本来还想自己整理一下，学了这么长时间都没有系统的整理过，看了这个确实不错，值得一看。有不少例子，虽然有些确实很简单，没有必要举例，但是也足以见证笔者的耐心和负责。在此我把这里粘贴过来，不过都是引用的该网站的链接。
Character / Strin
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2010-03-23 14:48:11
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Oracle提供了一些功能很强大的分析函数，使用这些函数可以完成可能需要存储过程来实现的需求。分析函数计算基于一组数据行的聚合值，它们不同于聚合函数的是，它们为每一组返回多行结果。分析函数是除ORDER BY子句之外，在查询语句中最后执行的。所有的join和所有的WHERE ,GROUP BY 和HAVING子句都在分析函数之前执行。所以分析函数只能出现在select或ORDER BY子句中。下图
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2017-04-23 16:49:03
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Oracle Aggregate Functions用过很多，官网的说明如下：Aggregate Functionshttp://docs.oracle.com/cd/E11882_01/server.112/e26088/functions003.htm#SQLRF20035 Aggregatefunctions return a single result row based on g
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2022-01-05 14:39:28
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Oracle Aggregate Functions用过很多，官网的说明如下：Aggregate Functionshttp://docs.oracle.com/cd/E11882_01/server.112/e26088/functions003.htm#SQLRF20035
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2011-12-09 15:22:00
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Oracle Aggregate Functions用过很多，官网的说明如下：Aggregate Functions Aggregatefunctions return a single result row based on groups of rows, rather than onsingle rows. Aggregate functions can appear in select l
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2021-12-31 14:27:44
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一. Analytic Functions 说明 分析函数是oracle 8中引入的一个概念,为我们分
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2022-09-01 22:14:22
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Oracle Aggregate Functions用过很多，官网的说明如下： Aggregate Functionshttp://docs.oracle.com/cd/E11882_01/server.112/e26088/functions003.htm#SQLRF20035 Aggregatefunctions return a single resu
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2022-09-02 10:50:40
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一. Pipelined table functions 官网说明如
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2022-10-19 21:48:12
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/* *Whois检查代码， *@author:lixiuran */function whois_query($domain) { $domain = strtolower(trim($domain)); $domain = preg_replace('/^http:\/\//...
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2021-07-26 17:41:06
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CheckFolderChar(folderName)StrDelete(Str,delStr)代码代码 Read More
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2021-08-13 11:08:44
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simple useful perl functions
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2010-08-19 15:46:43
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A stub is just an empty function. It's a quick way to create a skeleton of your final program. You may add the print output to ensure that all your st
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2020-05-16 00:46:00
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Wait functionsallow a thread to block its own execution. The wait functions do not return until the specified criteria have been met. The type of wait function determines the set of criteria used. When a wait function is called, it checks whether the wait criteria have been met. If the criteria have
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2013-05-19 09:30:00
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例1<?phpfunction welcome($name){echo ' hello ' . $name;}echo welcome('zxl');>例2<?phpfunction add($num1,$num2){echo
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Some functions have default arguments, e.g. year(v=vector(time()) instant-vector). This means default to the valu...
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#include int dayu(int *,int *);int dengyu(int *,int *);int xiaoyu(int *,int *); main() { printf("%d/n",panduan(1,2,(int (*)(void *,void *))dayu)); printf("%d/n",panduan(1,2,(in
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2022-08-19 16:35:54
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