ADO.NET Provider for Elasticsearch

Build 20.0.7654

SELECT INTO ステートメント

SELECT INTO ステートメントを使って、書式付きデータをファイルにエクスポートできます。

SQL クエリを使ったデータのエクスポート

次のクエリは、comma-separated values(CSV)ファイルフォーマットにデータをエクスポートします。

C#

String connectionString = "Server=127.0.0.1;Port=9200;";

using (ElasticsearchConnection connection = new ElasticsearchConnection(connectionString)) {
  ElasticsearchCommand cmd = new ElasticsearchCommand("SELECT Id, Name INTO [csv://Account.txt] FROM [Account] WHERE Industry = 'Floppy Disks' ", connection);
  int rowsAffected = cmd.ExecuteNonQuery();
} 

VB.NET

Dim connectionString As [String] = "Server=127.0.0.1;Port=9200;" 

Using connection As New ElasticsearchConnection(connectionString)
  Dim cmd As New ElasticsearchCommand("SELECT Id, Name INTO [csv://Account.txt] FROM [Account] WHERE Industry = 'Floppy Disks'", connection)
  Dim rowsAffected As Integer = cmd.ExecuteNonQuery()
End Using
URI で他のファイルフォーマットを指定できます。以下の例は、tab-separated values(TSV)にエクスポートします。

C#

String connectionString = "Server=127.0.0.1;Port=9200;";

using (ElasticsearchConnection connection = new ElasticsearchConnection(connectionString)) {
  ElasticsearchCommand cmd = new ElasticsearchCommand("SELECT * INTO [Account] IN [csv://filename=c:/Account.csv;delimiter=tab] FROM [Account] WHERE Industry = 'Floppy Disks'", connection);
  int rowsAffected = cmd.ExecuteNonQuery();
} 

VB.NET

Dim connectionString As [String] = "Server=127.0.0.1;Port=9200;" 

Using connection As New ElasticsearchConnection(connectionString)
  Dim cmd As New ElasticsearchCommand("SELECT * INTO [Account] IN [csv://filename=c:/Account.csv;delimiter=tab] FROM [Account] WHERE Industry = 'Floppy Disks'", connection)
  Dim rowsAffected As Integer = cmd.ExecuteNonQuery()
End Using

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Build 20.0.7654