道森Oracle

摘要： 一. Analytic Functions 说明 分析函数是oracle 8中引入的一个概念,为我们分析数据提供了一种简单高效的处理方式.官方对分析函数的说明如下： Analytic functions compute an aggregate value based on a group of rows. They differ fromaggregate functions in that they return multiple rows for each group. The groupof rows is called awindowand is defined bytheanaly 阅读全文

摘要： 一. Analytic Functions 说明 分析函数是oracle 8中引入的一个概念,为我们分析数据提供了一种简单高效的处理方式.官方对分析函数的说明如下： Analytic functions compute an aggregate value based on a group of rows. They differ fromaggregate functions in that they return multiple rows for each group. The groupof rows is called awindowand is defined bytheanaly 阅读全文