如何查找 SQL Server 数据层应用程序的当前版本？

Question

我们正在使用 SQL Server 数据层应用程序（dacpac 或 DAC 包），但我很难找到数据库的当前版本。

有没有办法使用以下任一方法获取当前版本：

1. 从 SQL Server Management Studio 内部
2. 通过 SQL 语句
3. 使用 .NET 代码以编程方式获取

Answer 1

从 SQL Server Management Studio 中

来自 http://msdn.microsoft.com /en-us/library/ee210574.aspx

要查看部署到数据库引擎实例的 DAC 的详细信息：

1. 选择视图/对象资源管理器菜单。

2. 从对象资源管理器窗格连接到 的实例。

3. 选择查看/对象资源管理器详细信息菜单。

4. 在对象资源管理器中选择映射到实例的服务器节点，然后导航到管理\数据层应用程序节点。

5. 详细信息页面顶部窗格中的列表视图列出了部署到数据库引擎实例的每个 DAC。选择一个 DAC 以在页面底部的详细信息窗格中显示信息。

数据层应用程序节点的右键菜单还用于部署新的 DAC 或删除现有的 DAC。

通过 SQL 语句

SELECT instance_name, type_version FROM msdb.dbo.sysdac_instances

通过 Azure 上的 SQL 语句

SELECT instance_name, type_version FROM master.dbo.sysdac_instances

使用 .NET 代码以编程方式

请注意，在 DacFx 3.0 中这不再有效。请参阅我的其他答案以获取实现方法。

C#

ServerConnection serverConnection;
string databaseName;

// Establish a connection to the SQL Server instance.
using (SqlConnection sqlConnection =
    new SqlConnection(ConfigurationManager.ConnectionStrings["DefaultConnection"].ConnectionString))
{
    serverConnection = new ServerConnection(sqlConnection);
    serverConnection.Connect();

    // Assumes default database in connection string is the database we are trying to query.
    databaseName = sqlConnection.Database;
}

// Get the DAC info.
DacStore dacstore = new DacStore(serverConnection);
var dacInstance = dacstore.DacInstances[databaseName];
System.Diagnostics.Debug.Print("Database {0} has Dac pack version {1}.", databaseName, dacInstance.Type.Version);

VB.NET

Dim serverConnection As ServerConnection
Dim databaseName As String

' Establish a connection to the SQL Server instance.
Using sqlConnection As New SqlConnection(ConfigurationManager.ConnectionStrings("DefaultConnection").ConnectionString)
    serverConnection = New ServerConnection(sqlConnection)
    serverConnection.Connect()

    ' Assumes default database in connection string is the database we are trying to query.
    databaseName = sqlConnection.Database
End Using

' Get the DAC info.
Dim dacstore As New DacStore(serverConnection)
Dim dacInstance = dacstore.DacInstances(databaseName)
System.Diagnostics.Debug.Print("Database {0} has Dac pack version {1}.", databaseName, dacInstance.Type.Version)

Answer 2

在 DacFx 3.0 中，DacStore 不再可用。要从 C# 代码获取版本，您需要查询数据库。这是一个例子：

  using System;
  using System.Data;
  using System.Data.SqlClient;

  class Program
  {
    static void Main()
    {
      try
      {
        string version = GetDatabaseVersion(@"Initial Catalog=xxx;Data Source=yyy;Integrated Security=True;Pooling=False", false);
        Console.WriteLine("Database has DAC pack version {0}.", version);
      }
      catch (Exception ex)
      {
        Console.ForegroundColor = ConsoleColor.Red;
        Console.WriteLine(ex.Message);
        Console.WriteLine();
        Console.ResetColor();
      }
      Console.WriteLine("Press any key to exit");
      Console.ReadKey(true);
    }

/// <summary>
/// Gets the database version.
/// </summary>
/// <param name="connectionString">The connection string of database to query.</param>
/// <param name="isAzure">True if we are querying an Azure database.</param>
/// <returns>DAC pack version</returns>
private static string GetDatabaseVersion(string connectionString, bool isAzure)
{
  var connectionStringBuilder = new SqlConnectionStringBuilder(connectionString);
  string instanceName = connectionStringBuilder.InitialCatalog;
  string databaseToQuery = "msdb";
  if (isAzure)
  {
    // On Azure we must be connected to the master database to query sysdac_instances
    connectionStringBuilder.InitialCatalog = "Master";
    databaseToQuery = "master";
  }

  string query = String.Format("select type_version from {0}.dbo.sysdac_instances WHERE instance_name = '{1}'", databaseToQuery, instanceName);
  using (var connection = new SqlConnection(connectionStringBuilder.ConnectionString))
  {
    connection.Open();
    SqlCommand command = connection.CreateCommand();
    command.CommandText = query;
    command.CommandTimeout = 15;
    command.CommandType = CommandType.Text;
    var version = (string)command.ExecuteScalar();
    return version;
  }
}

}