ORA-32311: materialized view definition query selects an unsupported user-defined type
文档解释ORA-32311:materializedviewdefinitionqueryselectsanunsupporteduser-definedtypeCause:Anattemptwasmadeinthedefinitionquerytoselectanembeddeduser-definedtype,fu...
c# 操作Xml中SelectSingleNode方法中的xpath用法
常见的XML数据类型有：Element,Attribute，Comment,Text. Element,指形如<Name>Tom<Name>的节点。它可以包括：Element,Text,Comment,ProcessingInstruction,CDATA,andEnt...
