SqlBulkCopyColumnMapping コンストラクター

定義

名前空間:: Microsoft.Data.SqlClient

アセンブリ:: Microsoft.Data.SqlClient.dll

パッケージ:: Microsoft.Data.SqlClient v1.0.19269.1

パッケージ:: Microsoft.Data.SqlClient v1.1.4

パッケージ:: Microsoft.Data.SqlClient v2.0.1

パッケージ:: Microsoft.Data.SqlClient v2.1.4

パッケージ:: Microsoft.Data.SqlClient v3.0.1

パッケージ:: Microsoft.Data.SqlClient v3.1.0

パッケージ:: Microsoft.Data.SqlClient v4.0.1

パッケージ:: Microsoft.Data.SqlClient v4.1.0

パッケージ:: Microsoft.Data.SqlClient v5.0.0

パッケージ:: Microsoft.Data.SqlClient v5.1.0

パッケージ:: Microsoft.Data.SqlClient v5.2.0

パッケージ:: Microsoft.Data.SqlClient v6.0.2

パッケージ:: Microsoft.Data.SqlClient v6.1.3

パッケージ:: Microsoft.Data.SqlClient v7.0.3

パッケージ:: Microsoft.Data.SqlClient v7.1.0

重要

一部の情報は、リリース前に大きく変更される可能性があるプレリリースされた製品に関するものです。 Microsoft は、ここに記載されている情報について、明示または黙示を問わず、一切保証しません。

オーバーロード

Name	説明
SqlBulkCopyColumnMapping()	新しい SqlBulkCopyColumnMapping オブジェクトを初期化するパラメーターなしのコンストラクター。
SqlBulkCopyColumnMapping(Int32, Int32)	列の序数を使用して、ソース列と変換先列を参照する新しい列マッピングを作成します。
SqlBulkCopyColumnMapping(Int32, String)	列序数を使用してソース列を参照し、ターゲット列の列名を使用して、新しい列マッピングを作成します。
SqlBulkCopyColumnMapping(String, Int32)	ソース列を参照する列名とターゲット列の列序数を使用して、新しい列マッピングを作成します。
SqlBulkCopyColumnMapping(String, String)	列名を使用して、ソース列と変換先列を参照する新しい列マッピングを作成します。

SqlBulkCopyColumnMapping()

ソース:: SqlBulkCopyColumnMapping.cs

ソース:: SqlBulkCopyColumnMapping.cs

ソース:: SqlBulkCopyColumnMapping.cs

新しい SqlBulkCopyColumnMapping オブジェクトを初期化するパラメーターなしのコンストラクター。

public:
 SqlBulkCopyColumnMapping();

public SqlBulkCopyColumnMapping();

Public Sub New ()

例

次の例では、AdventureWorks サンプルデータベースのソーステーブルから、同じデータベース内のコピー先テーブルにデータを一括コピーします。変換先の列数はソース内の列数と一致しますが、列名と序数の位置は一致しません。 SqlBulkCopyColumnMapping オブジェクトは、一括コピーの列マップを作成するために使用されます。

Important

このサンプルは、「バルクコピーサンプルのセットアップ」で説明されているように作業テーブルを作成してからでないと動作しません。このコードでは、SqlBulkCopy だけを使用した構文について説明します。ソーステーブルと変換先テーブルが同じ SQL Server インスタンス内にある場合は、Transact-SQL INSERT … SELECT ステートメントを使用してデータをコピーする方が簡単かつ迅速です。

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

class Program
{
    static void Main()
    {
        string connectionString = GetConnectionString();
        // Open a sourceConnection to the AdventureWorks database.
        using (SqlConnection sourceConnection =
                   new SqlConnection(connectionString))
        {
            sourceConnection.Open();

            // Perform an initial count on the destination table.
            SqlCommand commandRowCount = new SqlCommand(
                "SELECT COUNT(*) FROM " +
                "dbo.BulkCopyDemoDifferentColumns;",
                sourceConnection);
            long countStart = System.Convert.ToInt32(
                commandRowCount.ExecuteScalar());
            Console.WriteLine("Starting row count = {0}", countStart);

            // Get data from the source table as a SqlDataReader.
            SqlCommand commandSourceData = new SqlCommand(
                "SELECT ProductID, Name, " +
                "ProductNumber " +
                "FROM Production.Product;", sourceConnection);
            SqlDataReader reader =
                commandSourceData.ExecuteReader();

            // Set up the bulk copy object.
            using (SqlBulkCopy bulkCopy =
                       new SqlBulkCopy(connectionString))
            {
                bulkCopy.DestinationTableName =
                    "dbo.BulkCopyDemoDifferentColumns";

                // Set up the column mappings by name.
                SqlBulkCopyColumnMapping mapID =
                    new SqlBulkCopyColumnMapping("ProductID", "ProdID");
                bulkCopy.ColumnMappings.Add(mapID);

                SqlBulkCopyColumnMapping mapName =
                    new SqlBulkCopyColumnMapping("Name", "ProdName");
                bulkCopy.ColumnMappings.Add(mapName);

                SqlBulkCopyColumnMapping mapNumber =
                    new SqlBulkCopyColumnMapping("ProductNumber", "ProdNum");
                bulkCopy.ColumnMappings.Add(mapNumber);

                // Write from the source to the destination.
                try
                {
                    bulkCopy.WriteToServer(reader);
                }
                catch (Exception ex)
                {
                    Console.WriteLine(ex.Message);
                }
                finally
                {
                    // Close the SqlDataReader. The SqlBulkCopy
                    // object is automatically closed at the end
                    // of the using block.
                    reader.Close();
                }
            }

            // Perform a final count on the destination 
            // table to see how many rows were added.
            long countEnd = System.Convert.ToInt32(
                commandRowCount.ExecuteScalar());
            Console.WriteLine("Ending row count = {0}", countEnd);
            Console.WriteLine("{0} rows were added.", countEnd - countStart);
            Console.WriteLine("Press Enter to finish.");
            Console.ReadLine();
        }
    }

    private static string GetConnectionString()
    // To avoid storing the sourceConnection string in your code, 
    // you can retrieve it from a configuration file. 
    {
        return "Data Source=(local); " +
            " Integrated Security=true;" +
            "Initial Catalog=AdventureWorks;";
    }
}

注釈

このコンストラクターを使用する場合は、 SourceColumn プロパティまたは SourceOrdinal プロパティを使用してマッピングのソースを定義し、 DestinationColumn プロパティまたは DestinationOrdinal プロパティを使用してマッピングの宛先を定義する必要があります。

適用対象

SqlBulkCopyColumnMapping(Int32, Int32)

ソース:: SqlBulkCopyColumnMapping.cs

ソース:: SqlBulkCopyColumnMapping.cs

ソース:: SqlBulkCopyColumnMapping.cs

列の序数を使用して、ソース列と変換先列を参照する新しい列マッピングを作成します。

public:
 SqlBulkCopyColumnMapping(int sourceColumnOrdinal, int destinationOrdinal);

public SqlBulkCopyColumnMapping(int sourceColumnOrdinal, int destinationOrdinal);

new Microsoft.Data.SqlClient.SqlBulkCopyColumnMapping : int * int -> Microsoft.Data.SqlClient.SqlBulkCopyColumnMapping

Public Sub New (sourceColumnOrdinal As Integer, destinationOrdinal As Integer)

パラメーター

sourceColumnOrdinal: Int32

データソース内のソース列の序数位置。

destinationOrdinal: Int32

変換先テーブル内の変換先列の序数位置。

例

次の例では、AdventureWorks サンプルデータベースのソーステーブルから、同じデータベース内のコピー先テーブルにデータを一括コピーします。変換先の列数はソース内の列数と一致しますが、列名と序数の位置は一致しません。 SqlBulkCopyColumnMapping オブジェクトは、列の序数位置に基づいて一括コピーの列マップを作成するために使用されます。

Important

using Microsoft.Data.SqlClient;

class Program
{
    static void Main()
    {
        string connectionString = GetConnectionString();
        // Open a sourceConnection to the AdventureWorks database.
        using (SqlConnection sourceConnection =
                   new SqlConnection(connectionString))
        {
            sourceConnection.Open();

            // Perform an initial count on the destination table.
            SqlCommand commandRowCount = new SqlCommand(
                "SELECT COUNT(*) FROM " +
                "dbo.BulkCopyDemoDifferentColumns;",
                sourceConnection);
            long countStart = System.Convert.ToInt32(
                commandRowCount.ExecuteScalar());
            Console.WriteLine("Starting row count = {0}", countStart);

            // Get data from the source table as a SqlDataReader.
            SqlCommand commandSourceData = new SqlCommand(
                "SELECT ProductID, Name, " +
                "ProductNumber " +
                "FROM Production.Product;", sourceConnection);
            SqlDataReader reader =
                commandSourceData.ExecuteReader();

            // Set up the bulk copy object.
            using (SqlBulkCopy bulkCopy =
                       new SqlBulkCopy(connectionString))
            {
                bulkCopy.DestinationTableName =
                    "dbo.BulkCopyDemoDifferentColumns";

                // Set up the column mappings by ordinal.
                SqlBulkCopyColumnMapping columnMapID =
                    new SqlBulkCopyColumnMapping(0, 0);
                bulkCopy.ColumnMappings.Add(columnMapID);

                SqlBulkCopyColumnMapping columnMapName =
                    new SqlBulkCopyColumnMapping(1, 2);
                bulkCopy.ColumnMappings.Add(columnMapName);

                SqlBulkCopyColumnMapping columnMapNumber =
                    new SqlBulkCopyColumnMapping(2, 1);
                bulkCopy.ColumnMappings.Add(columnMapNumber);

                // Write from the source to the destination.
                try
                {
                    bulkCopy.WriteToServer(reader);
                }
                catch (Exception ex)
                {
                    Console.WriteLine(ex.Message);
                }
                finally
                {
                    // Close the SqlDataReader. The SqlBulkCopy
                    // object is automatically closed at the end
                    // of the using block.
                    reader.Close();
                }
            }

            // Perform a final count on the destination 
            // table to see how many rows were added.
            long countEnd = System.Convert.ToInt32(
                commandRowCount.ExecuteScalar());
            Console.WriteLine("Ending row count = {0}", countEnd);
            Console.WriteLine("{0} rows were added.", countEnd - countStart);
            Console.WriteLine("Press Enter to finish.");
            Console.ReadLine();
        }
    }

    private static string GetConnectionString()
    // To avoid storing the sourceConnection string in your code, 
    // you can retrieve it from a configuration file. 
    {
        return "Data Source=(local); " +
            " Integrated Security=true;" +
            "Initial Catalog=AdventureWorks;";
    }
}

Important

このサンプルは、「バルクコピーサンプルのセットアップ」で説明されているように作業テーブルを作成してからでないと動作しません。

このコードでは、SqlBulkCopy だけを使用した構文について説明します。ソーステーブルと変換先テーブルが同じ SQL Server インスタンス内にある場合は、Transact-SQL INSERT … SELECT ステートメントを使用してデータをコピーする方が簡単かつ迅速です。

using Microsoft.Data.SqlClient;

class Program
{
    static void Main()
    {
        string connectionString = GetConnectionString();
        // Open a sourceConnection to the AdventureWorks database.
        using (SqlConnection sourceConnection =
                   new SqlConnection(connectionString))
        {
            sourceConnection.Open();

            // Perform an initial count on the destination table.
            SqlCommand commandRowCount = new SqlCommand(
                "SELECT COUNT(*) FROM " +
                "dbo.BulkCopyDemoDifferentColumns;",
                sourceConnection);
            long countStart = System.Convert.ToInt32(
                commandRowCount.ExecuteScalar());
            Console.WriteLine("Starting row count = {0}", countStart);

            // Get data from the source table as a SqlDataReader.
            SqlCommand commandSourceData = new SqlCommand(
                "SELECT ProductID, Name, " +
                "ProductNumber " +
                "FROM Production.Product;", sourceConnection);
            SqlDataReader reader =
                commandSourceData.ExecuteReader();

            // Set up the bulk copy object.
            using (SqlBulkCopy bulkCopy =
                       new SqlBulkCopy(connectionString))
            {
                bulkCopy.DestinationTableName =
                    "dbo.BulkCopyDemoDifferentColumns";

                // Set up the column mappings by ordinal.
                SqlBulkCopyColumnMapping columnMapID =
                    new SqlBulkCopyColumnMapping(0, 0);
                bulkCopy.ColumnMappings.Add(columnMapID);

                SqlBulkCopyColumnMapping columnMapName =
                    new SqlBulkCopyColumnMapping(1, 2);
                bulkCopy.ColumnMappings.Add(columnMapName);

                SqlBulkCopyColumnMapping columnMapNumber =
                    new SqlBulkCopyColumnMapping(2, 1);
                bulkCopy.ColumnMappings.Add(columnMapNumber);

                // Write from the source to the destination.
                try
                {
                    bulkCopy.WriteToServer(reader);
                }
                catch (Exception ex)
                {
                    Console.WriteLine(ex.Message);
                }
                finally
                {
                    // Close the SqlDataReader. The SqlBulkCopy
                    // object is automatically closed at the end
                    // of the using block.
                    reader.Close();
                }
            }

            // Perform a final count on the destination 
            // table to see how many rows were added.
            long countEnd = System.Convert.ToInt32(
                commandRowCount.ExecuteScalar());
            Console.WriteLine("Ending row count = {0}", countEnd);
            Console.WriteLine("{0} rows were added.", countEnd - countStart);
            Console.WriteLine("Press Enter to finish.");
            Console.ReadLine();
        }
    }

    private static string GetConnectionString()
    // To avoid storing the sourceConnection string in your code, 
    // you can retrieve it from a configuration file. 
    {
        return "Data Source=(local); " +
            " Integrated Security=true;" +
            "Initial Catalog=AdventureWorks;";
    }
}

適用対象

SqlBulkCopyColumnMapping(Int32, String)

ソース:: SqlBulkCopyColumnMapping.cs

ソース:: SqlBulkCopyColumnMapping.cs

ソース:: SqlBulkCopyColumnMapping.cs

列序数を使用してソース列を参照し、ターゲット列の列名を使用して、新しい列マッピングを作成します。

public:
 SqlBulkCopyColumnMapping(int sourceColumnOrdinal, System::String ^ destinationColumn);

public SqlBulkCopyColumnMapping(int sourceColumnOrdinal, string destinationColumn);

new Microsoft.Data.SqlClient.SqlBulkCopyColumnMapping : int * string -> Microsoft.Data.SqlClient.SqlBulkCopyColumnMapping

Public Sub New (sourceColumnOrdinal As Integer, destinationColumn As String)

パラメーター

sourceColumnOrdinal: Int32

データソース内のソース列の序数位置。

destinationColumn: String

変換先テーブル内の変換先列の名前。

例

Important

using Microsoft.Data.SqlClient;

class Program
{
    static void Main()
    {
        string connectionString = GetConnectionString();
        // Open a sourceConnection to the AdventureWorks database.
        using (SqlConnection sourceConnection =
                   new SqlConnection(connectionString))
        {
            sourceConnection.Open();

            // Perform an initial count on the destination table.
            SqlCommand commandRowCount = new SqlCommand(
                "SELECT COUNT(*) FROM " +
                "dbo.BulkCopyDemoDifferentColumns;",
                sourceConnection);
            long countStart = System.Convert.ToInt32(
                commandRowCount.ExecuteScalar());
            Console.WriteLine("Starting row count = {0}", countStart);

            // Get data from the source table as a SqlDataReader.
            SqlCommand commandSourceData = new SqlCommand(
                "SELECT ProductID, Name, " +
                "ProductNumber " +
                "FROM Production.Product;", sourceConnection);
            SqlDataReader reader =
                commandSourceData.ExecuteReader();

            // Set up the bulk copy object.
            using (SqlBulkCopy bulkCopy =
                       new SqlBulkCopy(connectionString))
            {
                bulkCopy.DestinationTableName =
                    "dbo.BulkCopyDemoDifferentColumns";

                // Set up the column mappings by ordinal and name.
                SqlBulkCopyColumnMapping columnMapID =
                    new SqlBulkCopyColumnMapping(0, "ProdID");
                bulkCopy.ColumnMappings.Add(columnMapID);

                SqlBulkCopyColumnMapping columnMapName =
                    new SqlBulkCopyColumnMapping(1, "ProdName");
                bulkCopy.ColumnMappings.Add(columnMapName);

                SqlBulkCopyColumnMapping columnMapNumber =
                    new SqlBulkCopyColumnMapping(2, "ProdNum");
                bulkCopy.ColumnMappings.Add(columnMapNumber);

                // Write from the source to the destination.
                try
                {
                    bulkCopy.WriteToServer(reader);
                }
                catch (Exception ex)
                {
                    Console.WriteLine(ex.Message);
                }
                finally
                {
                    // Close the SqlDataReader. The SqlBulkCopy
                    // object is automatically closed at the end
                    // of the using block.
                    reader.Close();
                }
            }

            // Perform a final count on the destination 
            // table to see how many rows were added.
            long countEnd = System.Convert.ToInt32(
                commandRowCount.ExecuteScalar());
            Console.WriteLine("Ending row count = {0}", countEnd);
            Console.WriteLine("{0} rows were added.", countEnd - countStart);
            Console.WriteLine("Press Enter to finish.");
            Console.ReadLine();
        }
    }

    private static string GetConnectionString()
    // To avoid storing the sourceConnection string in your code, 
    // you can retrieve it from a configuration file. 
    {
        return "Data Source=(local); " +
            " Integrated Security=true;" +
            "Initial Catalog=AdventureWorks;";
    }
}

Important

このサンプルは、「バルクコピーサンプルのセットアップ」で説明されているように作業テーブルを作成してからでないと動作しません。

using Microsoft.Data.SqlClient;

class Program
{
    static void Main()
    {
        string connectionString = GetConnectionString();
        // Open a sourceConnection to the AdventureWorks database.
        using (SqlConnection sourceConnection =
                   new SqlConnection(connectionString))
        {
            sourceConnection.Open();

            // Perform an initial count on the destination table.
            SqlCommand commandRowCount = new SqlCommand(
                "SELECT COUNT(*) FROM " +
                "dbo.BulkCopyDemoDifferentColumns;",
                sourceConnection);
            long countStart = System.Convert.ToInt32(
                commandRowCount.ExecuteScalar());
            Console.WriteLine("Starting row count = {0}", countStart);

            // Get data from the source table as a SqlDataReader.
            SqlCommand commandSourceData = new SqlCommand(
                "SELECT ProductID, Name, " +
                "ProductNumber " +
                "FROM Production.Product;", sourceConnection);
            SqlDataReader reader =
                commandSourceData.ExecuteReader();

            // Set up the bulk copy object.
            using (SqlBulkCopy bulkCopy =
                       new SqlBulkCopy(connectionString))
            {
                bulkCopy.DestinationTableName =
                    "dbo.BulkCopyDemoDifferentColumns";

                // Set up the column mappings by ordinal and name.
                SqlBulkCopyColumnMapping columnMapID =
                    new SqlBulkCopyColumnMapping(0, "ProdID");
                bulkCopy.ColumnMappings.Add(columnMapID);

                SqlBulkCopyColumnMapping columnMapName =
                    new SqlBulkCopyColumnMapping(1, "ProdName");
                bulkCopy.ColumnMappings.Add(columnMapName);

                SqlBulkCopyColumnMapping columnMapNumber =
                    new SqlBulkCopyColumnMapping(2, "ProdNum");
                bulkCopy.ColumnMappings.Add(columnMapNumber);

                // Write from the source to the destination.
                try
                {
                    bulkCopy.WriteToServer(reader);
                }
                catch (Exception ex)
                {
                    Console.WriteLine(ex.Message);
                }
                finally
                {
                    // Close the SqlDataReader. The SqlBulkCopy
                    // object is automatically closed at the end
                    // of the using block.
                    reader.Close();
                }
            }

            // Perform a final count on the destination 
            // table to see how many rows were added.
            long countEnd = System.Convert.ToInt32(
                commandRowCount.ExecuteScalar());
            Console.WriteLine("Ending row count = {0}", countEnd);
            Console.WriteLine("{0} rows were added.", countEnd - countStart);
            Console.WriteLine("Press Enter to finish.");
            Console.ReadLine();
        }
    }

    private static string GetConnectionString()
    // To avoid storing the sourceConnection string in your code, 
    // you can retrieve it from a configuration file. 
    {
        return "Data Source=(local); " +
            " Integrated Security=true;" +
            "Initial Catalog=AdventureWorks;";
    }
}

適用対象

SqlBulkCopyColumnMapping(String, Int32)

ソース:: SqlBulkCopyColumnMapping.cs

ソース:: SqlBulkCopyColumnMapping.cs

ソース:: SqlBulkCopyColumnMapping.cs

ソース列を参照する列名とターゲット列の列序数を使用して、新しい列マッピングを作成します。

public:
 SqlBulkCopyColumnMapping(System::String ^ sourceColumn, int destinationOrdinal);

public SqlBulkCopyColumnMapping(string sourceColumn, int destinationOrdinal);

new Microsoft.Data.SqlClient.SqlBulkCopyColumnMapping : string * int -> Microsoft.Data.SqlClient.SqlBulkCopyColumnMapping

Public Sub New (sourceColumn As String, destinationOrdinal As Integer)

パラメーター

sourceColumn: String

データソース内のソース列の名前。

destinationOrdinal: Int32

変換先テーブル内の変換先列の序数位置。

例

Important

using Microsoft.Data.SqlClient;

class Program
{
    static void Main()
    {
        string connectionString = GetConnectionString();
        // Open a sourceConnection to the AdventureWorks database.
        using (SqlConnection sourceConnection =
                   new SqlConnection(connectionString))
        {
            sourceConnection.Open();

            // Perform an initial count on the destination table.
            SqlCommand commandRowCount = new SqlCommand(
                "SELECT COUNT(*) FROM " +
                "dbo.BulkCopyDemoDifferentColumns;",
                sourceConnection);
            long countStart = System.Convert.ToInt32(
                commandRowCount.ExecuteScalar());
            Console.WriteLine("Starting row count = {0}", countStart);

            // Get data from the source table as a SqlDataReader.
            SqlCommand commandSourceData = new SqlCommand(
                "SELECT ProductID, Name, " +
                "ProductNumber " +
                "FROM Production.Product;", sourceConnection);
            SqlDataReader reader =
                commandSourceData.ExecuteReader();

            // Set up the bulk copy object.
            using (SqlBulkCopy bulkCopy =
                       new SqlBulkCopy(connectionString))
            {
                bulkCopy.DestinationTableName =
                    "dbo.BulkCopyDemoDifferentColumns";

                // Set up the column mappings by name and ordinal.
                SqlBulkCopyColumnMapping columnMapID =
                    new SqlBulkCopyColumnMapping("ProductID", 0);
                bulkCopy.ColumnMappings.Add(columnMapID);

                SqlBulkCopyColumnMapping columnMapName =
                    new SqlBulkCopyColumnMapping("Name", 2);
                bulkCopy.ColumnMappings.Add(columnMapName);

                SqlBulkCopyColumnMapping columnMapNumber =
                    new SqlBulkCopyColumnMapping("ProductNumber", 1);
                bulkCopy.ColumnMappings.Add(columnMapNumber);

                // Write from the source to the destination.
                try
                {
                    bulkCopy.WriteToServer(reader);
                }
                catch (Exception ex)
                {
                    Console.WriteLine(ex.Message);
                }
                finally
                {
                    // Close the SqlDataReader. The SqlBulkCopy
                    // object is automatically closed at the end
                    // of the using block.
                    reader.Close();
                }
            }

            // Perform a final count on the destination 
            // table to see how many rows were added.
            long countEnd = System.Convert.ToInt32(
                commandRowCount.ExecuteScalar());
            Console.WriteLine("Ending row count = {0}", countEnd);
            Console.WriteLine("{0} rows were added.", countEnd - countStart);
            Console.WriteLine("Press Enter to finish.");
            Console.ReadLine();
        }
    }

    private static string GetConnectionString()
    // To avoid storing the sourceConnection string in your code, 
    // you can retrieve it from a configuration file. 
    {
        return "Data Source=(local); " +
            " Integrated Security=true;" +
            "Initial Catalog=AdventureWorks;";
    }
}

Important

このサンプルは、「バルクコピーサンプルのセットアップ」で説明されているように作業テーブルを作成してからでないと動作しません。

using Microsoft.Data.SqlClient;

class Program
{
    static void Main()
    {
        string connectionString = GetConnectionString();
        // Open a sourceConnection to the AdventureWorks database.
        using (SqlConnection sourceConnection =
                   new SqlConnection(connectionString))
        {
            sourceConnection.Open();

            // Perform an initial count on the destination table.
            SqlCommand commandRowCount = new SqlCommand(
                "SELECT COUNT(*) FROM " +
                "dbo.BulkCopyDemoDifferentColumns;",
                sourceConnection);
            long countStart = System.Convert.ToInt32(
                commandRowCount.ExecuteScalar());
            Console.WriteLine("Starting row count = {0}", countStart);

            // Get data from the source table as a SqlDataReader.
            SqlCommand commandSourceData = new SqlCommand(
                "SELECT ProductID, Name, " +
                "ProductNumber " +
                "FROM Production.Product;", sourceConnection);
            SqlDataReader reader =
                commandSourceData.ExecuteReader();

            // Set up the bulk copy object.
            using (SqlBulkCopy bulkCopy =
                       new SqlBulkCopy(connectionString))
            {
                bulkCopy.DestinationTableName =
                    "dbo.BulkCopyDemoDifferentColumns";

                // Set up the column mappings by name and ordinal.
                SqlBulkCopyColumnMapping columnMapID =
                    new SqlBulkCopyColumnMapping("ProductID", 0);
                bulkCopy.ColumnMappings.Add(columnMapID);

                SqlBulkCopyColumnMapping columnMapName =
                    new SqlBulkCopyColumnMapping("Name", 2);
                bulkCopy.ColumnMappings.Add(columnMapName);

                SqlBulkCopyColumnMapping columnMapNumber =
                    new SqlBulkCopyColumnMapping("ProductNumber", 1);
                bulkCopy.ColumnMappings.Add(columnMapNumber);

                // Write from the source to the destination.
                try
                {
                    bulkCopy.WriteToServer(reader);
                }
                catch (Exception ex)
                {
                    Console.WriteLine(ex.Message);
                }
                finally
                {
                    // Close the SqlDataReader. The SqlBulkCopy
                    // object is automatically closed at the end
                    // of the using block.
                    reader.Close();
                }
            }

            // Perform a final count on the destination 
            // table to see how many rows were added.
            long countEnd = System.Convert.ToInt32(
                commandRowCount.ExecuteScalar());
            Console.WriteLine("Ending row count = {0}", countEnd);
            Console.WriteLine("{0} rows were added.", countEnd - countStart);
            Console.WriteLine("Press Enter to finish.");
            Console.ReadLine();
        }
    }

    private static string GetConnectionString()
    // To avoid storing the sourceConnection string in your code, 
    // you can retrieve it from a configuration file. 
    {
        return "Data Source=(local); " +
            " Integrated Security=true;" +
            "Initial Catalog=AdventureWorks;";
    }
}

適用対象

SqlBulkCopyColumnMapping(String, String)

ソース:: SqlBulkCopyColumnMapping.cs

ソース:: SqlBulkCopyColumnMapping.cs

ソース:: SqlBulkCopyColumnMapping.cs

列名を使用して、ソース列と変換先列を参照する新しい列マッピングを作成します。

public:
 SqlBulkCopyColumnMapping(System::String ^ sourceColumn, System::String ^ destinationColumn);

public SqlBulkCopyColumnMapping(string sourceColumn, string destinationColumn);

new Microsoft.Data.SqlClient.SqlBulkCopyColumnMapping : string * string -> Microsoft.Data.SqlClient.SqlBulkCopyColumnMapping

Public Sub New (sourceColumn As String, destinationColumn As String)

パラメーター

sourceColumn: String

データソース内のソース列の名前。

destinationColumn: String

変換先テーブル内の変換先列の名前。

例

Important

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

class Program
{
    static void Main()
    {
        string connectionString = GetConnectionString();
        // Open a sourceConnection to the AdventureWorks database.
        using (SqlConnection sourceConnection =
                   new SqlConnection(connectionString))
        {
            sourceConnection.Open();

            // Perform an initial count on the destination table.
            SqlCommand commandRowCount = new SqlCommand(
                "SELECT COUNT(*) FROM " +
                "dbo.BulkCopyDemoDifferentColumns;",
                sourceConnection);
            long countStart = System.Convert.ToInt32(
                commandRowCount.ExecuteScalar());
            Console.WriteLine("Starting row count = {0}", countStart);

            // Get data from the source table as a SqlDataReader.
            SqlCommand commandSourceData = new SqlCommand(
                "SELECT ProductID, Name, " +
                "ProductNumber " +
                "FROM Production.Product;", sourceConnection);
            SqlDataReader reader =
                commandSourceData.ExecuteReader();

            // Set up the bulk copy object.
            using (SqlBulkCopy bulkCopy =
                       new SqlBulkCopy(connectionString))
            {
                bulkCopy.DestinationTableName =
                    "dbo.BulkCopyDemoDifferentColumns";

                // Set up the column mappings by name.
                SqlBulkCopyColumnMapping mapID =
                    new SqlBulkCopyColumnMapping("ProductID", "ProdID");
                bulkCopy.ColumnMappings.Add(mapID);

                SqlBulkCopyColumnMapping mapName =
                    new SqlBulkCopyColumnMapping("Name", "ProdName");
                bulkCopy.ColumnMappings.Add(mapName);

                SqlBulkCopyColumnMapping mapNumber =
                    new SqlBulkCopyColumnMapping("ProductNumber", "ProdNum");
                bulkCopy.ColumnMappings.Add(mapNumber);

                // Write from the source to the destination.
                try
                {
                    bulkCopy.WriteToServer(reader);
                }
                catch (Exception ex)
                {
                    Console.WriteLine(ex.Message);
                }
                finally
                {
                    // Close the SqlDataReader. The SqlBulkCopy
                    // object is automatically closed at the end
                    // of the using block.
                    reader.Close();
                }
            }

            // Perform a final count on the destination 
            // table to see how many rows were added.
            long countEnd = System.Convert.ToInt32(
                commandRowCount.ExecuteScalar());
            Console.WriteLine("Ending row count = {0}", countEnd);
            Console.WriteLine("{0} rows were added.", countEnd - countStart);
            Console.WriteLine("Press Enter to finish.");
            Console.ReadLine();
        }
    }

    private static string GetConnectionString()
    // To avoid storing the sourceConnection string in your code, 
    // you can retrieve it from a configuration file. 
    {
        return "Data Source=(local); " +
            " Integrated Security=true;" +
            "Initial Catalog=AdventureWorks;";
    }
}

Important

このサンプルは、「バルクコピーサンプルのセットアップ」で説明されているように作業テーブルを作成してからでないと動作しません。

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

class Program
{
    static void Main()
    {
        string connectionString = GetConnectionString();
        // Open a sourceConnection to the AdventureWorks database.
        using (SqlConnection sourceConnection =
                   new SqlConnection(connectionString))
        {
            sourceConnection.Open();

            // Perform an initial count on the destination table.
            SqlCommand commandRowCount = new SqlCommand(
                "SELECT COUNT(*) FROM " +
                "dbo.BulkCopyDemoDifferentColumns;",
                sourceConnection);
            long countStart = System.Convert.ToInt32(
                commandRowCount.ExecuteScalar());
            Console.WriteLine("Starting row count = {0}", countStart);

            // Get data from the source table as a SqlDataReader.
            SqlCommand commandSourceData = new SqlCommand(
                "SELECT ProductID, Name, " +
                "ProductNumber " +
                "FROM Production.Product;", sourceConnection);
            SqlDataReader reader =
                commandSourceData.ExecuteReader();

            // Set up the bulk copy object.
            using (SqlBulkCopy bulkCopy =
                       new SqlBulkCopy(connectionString))
            {
                bulkCopy.DestinationTableName =
                    "dbo.BulkCopyDemoDifferentColumns";

                // Set up the column mappings by name.
                SqlBulkCopyColumnMapping mapID =
                    new SqlBulkCopyColumnMapping("ProductID", "ProdID");
                bulkCopy.ColumnMappings.Add(mapID);

                SqlBulkCopyColumnMapping mapName =
                    new SqlBulkCopyColumnMapping("Name", "ProdName");
                bulkCopy.ColumnMappings.Add(mapName);

                SqlBulkCopyColumnMapping mapNumber =
                    new SqlBulkCopyColumnMapping("ProductNumber", "ProdNum");
                bulkCopy.ColumnMappings.Add(mapNumber);

                // Write from the source to the destination.
                try
                {
                    bulkCopy.WriteToServer(reader);
                }
                catch (Exception ex)
                {
                    Console.WriteLine(ex.Message);
                }
                finally
                {
                    // Close the SqlDataReader. The SqlBulkCopy
                    // object is automatically closed at the end
                    // of the using block.
                    reader.Close();
                }
            }

            // Perform a final count on the destination 
            // table to see how many rows were added.
            long countEnd = System.Convert.ToInt32(
                commandRowCount.ExecuteScalar());
            Console.WriteLine("Ending row count = {0}", countEnd);
            Console.WriteLine("{0} rows were added.", countEnd - countStart);
            Console.WriteLine("Press Enter to finish.");
            Console.ReadLine();
        }
    }

    private static string GetConnectionString()
    // To avoid storing the sourceConnection string in your code, 
    // you can retrieve it from a configuration file. 
    {
        return "Data Source=(local); " +
            " Integrated Security=true;" +
            "Initial Catalog=AdventureWorks;";
    }
}

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