BulkInsertTask.KeepNulls プロパティ
一括読み込み操作で、空の列の値を nullNULL 参照 (Visual Basic では Nothing) のまま保持するか、その列に既定値を挿入するかを示す Boolean を取得します。値の設定も可能です。
名前空間: Microsoft.SqlServer.Dts.Tasks.BulkInsertTask
アセンブリ: Microsoft.SqlServer.BulkInsertTask (Microsoft.SqlServer.BulkInsertTask.dll)
構文
'宣言
Public Property KeepNulls As Boolean
Get
Set
'使用
Dim instance As BulkInsertTask
Dim value As Boolean
value = instance.KeepNulls
instance.KeepNulls = value
public bool KeepNulls { get; set; }
public:
virtual property bool KeepNulls {
bool get () sealed;
void set (bool value) sealed;
}
abstract KeepNulls : bool with get, set
override KeepNulls : bool with get, set
final function get KeepNulls () : boolean
final function set KeepNulls (value : boolean)
プロパティ値
型: System.Boolean
一括読み込み操作で、空の列の値を nullNULL 参照 (Visual Basic では Nothing) のまま保持する場合は true、指定した既定値を挿入する場合は false です。
実装
説明
詳細については、「一括インポート中の NULL の保持または既定値の使用 (SQL Server)」を参照してください。
使用例
次の例では、まず BulkInsertTask を作成し、TaskHost を使用して KeepNulls を含むプロパティの既定の設定を示します。 その後、2 つのフィールドを設定して、フィールド値の設定方法を示します。
using System;
using System.Collections.Generic;
using System.Text;
using Microsoft.SqlServer.Dts.Runtime;
using Microsoft.SqlServer.Dts.Tasks.BulkInsertTask;
namespace Microsoft.SqlServer.SSIS.Samples
{
class Program
{
static void Main(string[] args)
{
Package pkg = new Package();
Executable exec1 = pkg.Executables.Add("STOCK:BulkInsertTask");
TaskHost th = exec1 as TaskHost;
// List the default values of the Bulk Insert task
// by using the Properties collection of the TaskHost.
Console.WriteLine("BatchSize {0}", th.Properties["BatchSize"].GetValue(th));
Console.WriteLine("CheckConstraints {0}", th.Properties["CheckConstraints"].GetValue(th));
Console.WriteLine("CodePage {0}", th.Properties["CodePage"].GetValue(th));
Console.WriteLine("DataFileType {0}", th.Properties["DataFileType"].GetValue(th));
Console.WriteLine("DebugMode {0}", th.Properties["DebugMode"].GetValue(th));
Console.WriteLine("DestinationConnection {0}", th.Properties["DestinationConnection"].GetValue(th));
Console.WriteLine("DestinationTableName {0}", th.Properties["DestinationTableName"].GetValue(th));
Console.WriteLine("FieldTerminator {0}", th.Properties["FieldTerminator"].GetValue(th));
Console.WriteLine("FireTriggers {0}", th.Properties["FireTriggers"].GetValue(th));
Console.WriteLine("FirstRow {0}", th.Properties["FirstRow"].GetValue(th));
Console.WriteLine("FormatFile {0}", th.Properties["FormatFile"].GetValue(th));
Console.WriteLine("KeepIdentity {0}", th.Properties["KeepIdentity"].GetValue(th));
Console.WriteLine("KeepNulls {0}", th.Properties["KeepNulls"].GetValue(th));
Console.WriteLine("LastRow {0}", th.Properties["LastRow"].GetValue(th));
Console.WriteLine("MaximumErrors {0}", th.Properties["MaximumErrors"].GetValue(th));
Console.WriteLine("RowTerminator {0}", th.Properties["RowTerminator"].GetValue(th));
Console.WriteLine("SortedData {0}", th.Properties["SortedData"].GetValue(th));
Console.WriteLine("SourceConnection {0}", th.Properties["SourceConnection"].GetValue(th));
Console.WriteLine("SqlStatement {0}", th.Properties["SqlStatement"].GetValue(th));
Console.WriteLine("SuspendRequired {0}", th.Properties["SuspendRequired"].GetValue(th));
Console.WriteLine("TableLock {0}", th.Properties["TableLock"].GetValue(th));
Console.WriteLine("UseFormatFile {0}", th.Properties["UseFormatFile"].GetValue(th));
Console.WriteLine("--------------------------");
// Show how to set a property by using the TaskHost Properties.
th.Properties["CheckConstraints"].SetValue(th, true);
th.Properties["DataFileType"].SetValue(th, DTSBulkInsert_DataFileType.DTSBulkInsert_DataFileType_Native);
Console.WriteLine("New value of CheckConstraints and DataFileType: {0}, {1}", th.Properties["CheckConstraints"].GetValue(th), th.Properties["DataFileType"].GetValue(th));
}
}
}
Imports System
Imports System.Collections.Generic
Imports System.Text
Imports Microsoft.SqlServer.Dts.Runtime
Imports Microsoft.SqlServer.Dts.Tasks.BulkInsertTask
Namespace Microsoft.SqlServer.SSIS.Samples
Class Program
Shared Sub Main(ByVal args() As String)
Dim pkg As Package = New Package()
Dim exec1 As Executable = pkg.Executables.Add("STOCK:BulkInsertTask")
Dim th As TaskHost = exec1 as TaskHost
' List the default values of the Bulk Insert task
' by using the Properties collection of the TaskHost.
Console.WriteLine("BatchSize {0}", th.Properties("BatchSize").GetValue(th))
Console.WriteLine("CheckConstraints {0}", th.Properties("CheckConstraints").GetValue(th))
Console.WriteLine("CodePage {0}", th.Properties("CodePage").GetValue(th))
Console.WriteLine("DataFileType {0}", th.Properties("DataFileType").GetValue(th))
Console.WriteLine("DebugMode {0}", th.Properties("DebugMode").GetValue(th))
Console.WriteLine("DestinationConnection {0}", th.Properties("DestinationConnection").GetValue(th))
Console.WriteLine("DestinationTableName {0}", th.Properties("DestinationTableName").GetValue(th))
Console.WriteLine("FieldTerminator {0}", th.Properties("FieldTerminator").GetValue(th))
Console.WriteLine("FireTriggers {0}", th.Properties("FireTriggers").GetValue(th))
Console.WriteLine("FirstRow {0}", th.Properties("FirstRow").GetValue(th))
Console.WriteLine("FormatFile {0}", th.Properties("FormatFile").GetValue(th))
Console.WriteLine("KeepIdentity {0}", th.Properties("KeepIdentity").GetValue(th))
Console.WriteLine("KeepNulls {0}", th.Properties("KeepNulls").GetValue(th))
Console.WriteLine("LastRow {0}", th.Properties("LastRow").GetValue(th))
Console.WriteLine("MaximumErrors {0}", th.Properties("MaximumErrors").GetValue(th))
Console.WriteLine("RowTerminator {0}", th.Properties("RowTerminator").GetValue(th))
Console.WriteLine("SortedData {0}", th.Properties("SortedData").GetValue(th))
Console.WriteLine("SourceConnection {0}", th.Properties("SourceConnection").GetValue(th))
Console.WriteLine("SqlStatement {0}", th.Properties("SqlStatement").GetValue(th))
Console.WriteLine("SuspendRequired {0}", th.Properties("SuspendRequired").GetValue(th))
Console.WriteLine("TableLock {0}", th.Properties("TableLock").GetValue(th))
Console.WriteLine("UseFormatFile {0}", th.Properties("UseFormatFile").GetValue(th))
Console.WriteLine("--------------------------")
' Show how to set a property by using the TaskHost Properties.
th.Properties("CheckConstraints").SetValue(th, True)
th.Properties("DataFileType").SetValue(th, DTSBulkInsert_DataFileType.DTSBulkInsert_DataFileType_Native)
Console.WriteLine("New value of CheckConstraints and DataFileType: {0}, {1}", th.Properties("CheckConstraints").GetValue(th), th.Properties("DataFileType").GetValue(th))
End Sub
End Class
End Namespace
サンプル出力 :
BatchSize 0
CheckConstraints False
CodePage RAW
DataFileType 0
DebugMode False
DestinationConnection
DestinationTableName
FieldTerminator Tab
FireTriggers False
FirstRow 1
FormatFile
KeepIdentity False
KeepNulls False
LastRow 0
MaximumErrors 0
RowTerminator {CR}{LF}
SortedData
SourceConnection
SqlStatement System.String[]
SuspendRequired False
TableLock False
UseFormatFile False
--------------------------
New value of CheckConstraints and DataFileType: True, 1