专栏：数据库
[数据库] oracle中的数值函数整理 对Oracle的数值函数多知道一些还是有好处的,做商业报表类的项目的时候会经常用到。 起码要知道oracle都给我们提供了哪些处理函数，不要到时候需要用的时候却不知道某个函数的存在而导致开发过程绕弯子。今天我就捧着一本《o
[数据库] oracle中的数值函数整理
对Oracle的数值函数多知道一些还是有好处的,做商业报表类的项目的时候会经常用到。 起码要知道oracle都给我们提供了哪些处理函数，不要到时候需要用的时候却不知道某个函数的存在而导致开发过程绕弯子。今天我就捧着一本《oracle database11g完全参考手册》将oracle提供给我们的数值函数从头捋了一遍。 主要分为三块介绍（单值函数、聚合函数、列表函数） 一、单值函数（比较简单，看...
database 数值函数 sign coalesce greatest
hai_cheng001 2013-12-19 00:43 阅读(1102) 评论(2)
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