有关于ORACLE数据库，针对信息化社会的今天起到了不可磨灭的作用··尤其是政府行业的数据传输·绝对是信息化时代的里程碑-Oracle has always been an innovative company. It was one of the first companies to make its business applications available through the internet--today, that idea is pervasive. Now Oracle i

常用的sql统计条件汇总，适用于政府企事业单位的日期规则，可以自定义，具有一定的实战效果-Sql statistical summary of commonly used terms, applies to government enterprises and institutions of date rules, you can customize, has a certain practical effect