当我尝试从sql Server 2008 R2 Express升级到sql Server 2008 R2 Enterprise时,它会通过所有测试,然后在“选择功能”步骤中失败,并显示以下错误：
There are no features selected for upgrade.
@H_404_5@和一个窗口错误消息：
There are validation errors on this page. Click ok to close this dialog Box. Review errors at the button of the setup page,then provide valid parameters or click help for more information.
@H_404_5@是否可以继续或需要备份,卸载Express,然后安装新的企业版？
解决方法
支持的版本和版本升级路径列在
Version and Edition Upgrades.您的升级路径是受支持的升级路径：
sql Server 2008 R2 Express sql Server 2008 R2 Express with Tools sql Server 2008 R2 Express with Advanced Services sql Server 2008 R2 Workgroup sql Server 2008 R2 Standard sql Server 2008 R2 Developer sql Server 2008 R2 Enterprise sql Server 2008 R2 Datacenter
附注：
This sql Server edition can be
@H_404_5@
upgraded to sql Server 2008 R2 on the
32-bit subsystem (WOW64) of a 64-bit
server. Failover Clusters are not
supported in the WOW mode. If you
currently have sql Server 2000,or sql
Server 2005 failover clusters on the
32-bit subsystem (WOW64) upgrade of
the failover cluster to sql Server
2008 R2 is not supported.您的Express版是否是32位安装,是否尝试将其升级到64位企业版？