Question

由于SQL Azure不支持USE [dbname]，我试图通过在连接字符串中指定数据库名称然后执行CREATE TABLE...脚本来连接到我的SQL Azure数据库。但是，这会因System.Data.SqlClient.SqlException “在数据库'master'中拒绝CREATE TABLE权限而失败。”我在这里做错了，它试图对master执行此语句？

以下是C＃代码示例：

string connectionString = @"Data Source=tcp:MYSERVER.database.windows.net;Initial Catalog=MYDATABASE;Integrated Security=False;User ID=USER@MYSERVER;Password=PWD;Connect Timeout=60;Encrypt=True;TrustServerCertificate=True";

using (SqlConnection connection = new SqlConnection(connectionString))
{
   connection.Open();
   ServerConnection serverConnection = new ServerConnection(connection);
   Server server = new Server(serverConnection);
   server.ConnectionContext.ExecuteNonQuery("CREATE TABLE New (NewId int)");
}

Answer 1

事实证明我的代码存在多个问题。在SQL Azure中，SMO仍然很古怪。所以，发布我的调查结果，以防有人正在经历同样的艰难道路。

每次获得如下数据库对象时，SMO都会在后台切换默认数据库：
```
Database database = server.Databases[databaseName]
```
初始目录成为Master，您可以在 server.ConnectionContext.ConnectionString （“普通”SQL不执行此操作）中更改的连接字符串中看到它。对此的解决方案是每次将数据库切换到Master时打开一个新连接（并关闭旧连接），因为一旦建立连接就无法更改数据库名称（显然，只有SQL Azure才能这样做）。
打开初始化ServerConnection和Server的连接有时会与第一个问题一起失败。这将给出一个模糊的错误消息，指出登录失败，提供guid和时间戳要求联系客户支持。废话。解决此问题的方法是不打开连接，让ServerConnection在Server对象初始化期间打开它：
最后，SQL Azure在Server对象上不喜欢Alter（）。删除了所有Alter的。

所以最终的代码片段看起来像这样：


       string connectionString = "Server=tcp:XXXXX.database.windows.net;Database=XXXXXX;User ID=XXXXXX;Password=XXXXX;Trusted_Connection=False;Encrypt=True;trustservercertificate=true";
       SqlConnection connection = new SqlConnection(connectionString);
       // do not explicitly open connection, it will be opened when Server is initialized
       // connection.Open();

       ServerConnection serverConnection = new ServerConnection(connection);
       Server server = new Server(serverConnection);

       // after this line, the default database will be switched to Master
       Database database = server.Databases["MyDatabase"];

       // you can still use this database object and server connection to 
       // do certain things against this database, like adding database roles 
       // and users      
       DatabaseRole role = new DatabaseRole(database, "NewRole");
       role.Create();

       // if you want to execute a script against this database, you have to open 
       // another connection and re-initiliaze the server object
       server.ConnectionContext.Disconnect();

       connection = new SqlConnection(connectionString);
       serverConnection = new ServerConnection(connection);
       server = new Server(serverConnection);
       server.ConnectionContext.ExecuteNonQuery("CREATE TABLE New (NewId int)");

如果有人感兴趣，这里是第2点的模糊例外：


Microsoft.SqlServer.Management.Common.ConnectionFailureException was unhandled
  Message=Failed to connect to server .
  Source=Microsoft.SqlServer.Smo
  StackTrace:
       at Microsoft.SqlServer.Management.Smo.DatabaseCollection.get_Item(String name)
       InnerException: System.Data.SqlClient.SqlException
       Message=Login failed for user 'XXXXXXXX'.
       This session has been assigned a tracing ID of 'XXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXX'.  Provide this tracing ID to customer support when you need assistance.
       Source=.Net SqlClient Data Provider
       ErrorCode=-2146232060
       Class=14
       LineNumber=65536
       Number=18456
       Procedure=""
       Server=tcp:XXXXXXXX.database.windows.net
       State=1
       StackTrace:
            at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection)
            at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning()
            at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj)
            at System.Data.SqlClient.SqlInternalConnectionTds.CompleteLogin(Boolean enlistOK)
            at System.Data.SqlClient.SqlInternalConnectionTds.AttemptOneLogin(ServerInfo serverInfo, String newPassword, Boolean ignoreSniOpenTimeout, TimeoutTimer timeout, SqlConnection owningObject)
            at System.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover(ServerInfo serverInfo, String newPassword, Boolean redirectedUserInstance, SqlConnection owningObject, SqlConnectionString connectionOptions, TimeoutTimer timeout)
            at System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(SqlConnection owningObject, TimeoutTimer timeout, SqlConnectionString connectionOptions, String newPassword, Boolean redirectedUserInstance)
            at System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, Object providerInfo, String newPassword, SqlConnection owningObject, Boolean redirectedUserInstance)
            at System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection)
            at System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnection owningConnection, DbConnectionPool pool, DbConnectionOptions options)
            at System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject)
            at System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject)
            at System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject)
            at System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection)
            at System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory)
            at System.Data.SqlClient.SqlConnection.Open()
            at Microsoft.SqlServer.Management.Common.ConnectionManager.InternalConnect(WindowsIdentity impersonatedIdentity)
            at Microsoft.SqlServer.Management.Common.ConnectionManager.Connect()

Answer 2

只是一个疯狂的猜测，基于一个恰好适合我的连接字符串。

您是否尝试过使用

数据库= MYDATABASE

取代

初始目录= MYDATABASE

连接字符串中的

？

Answer 3

还有一件事有助于我 - 应该为每个操作断开ServerConnection。

using (var connection = new SqlConnection(parameters.ConnectionStringToMasterDatabase))
            {
                var serverConnection = new ServerConnection(connection);
                try
                {
                    var server = new Server(serverConnection);
                    // do something
                }
                finally
                {
                    serverConnection.Disconnect();
                }
            }
using (var connection = new SqlConnection(parameters.ConnectionStringToMasterDatabase))
            {
                var serverConnection = new ServerConnection(connection);
                try
                {
                    var server = new Server(serverConnection);
                    // do something else
                }
                finally
                {
                    serverConnection.Disconnect();
                }
            }

无法使用SMO在SQL Azure数据库中创建表

3 个答案: