错误现象：login failed for user:poleaspnet
解决办法：在命令行运行如下命令
osql -E -S (local)NetSDK -Q "sp_grantlogin 'POLEASPNET'"
osql -E -S (local)NetSDK -d Pubs -Q "sp_grantdbaccess 'POLEASPNET'"
osql -E -S (local)NetSDK -d Pubs -Q "sp_addrolemember 'db_owner', 'POLEASPNET'"
以上是对数据库Pubs授予POLEASPNET用户访问权
