摘要:
在SQL语句中,操作XML参考网址:http://www.oratechinfo.co.uk/sqlxml.html http://www.oratechinfo.co.uk/ 阅读全文
摘要:
分析函数官方帮助文档:http://docs.oracle.com/cd/B19306_01/server.102/b14200/functions001.htm#SQLRF06174一、Top-N Queries,row_number()参考网址:http://www.oracle-base.com/articles/misc/top-n-queries.php1、row_number() TheROW_NUMBERanalytic function is similar to theROWNUMpseudocolumn in that it assigns a unique number. 阅读全文