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 = "DataModel=Relational;URI=C:\people.json"; using (JSONConnection connection = new JSONConnection(connectionString)) { JSONCommand cmd = new JSONCommand("SELECT personal.name.first, personal.name.last INTO [csv://NorthwindOData.txt] FROM [NorthwindOData] WHERE personal.name.last = 'ana.trujilo@northwind.org' ", connection); int rowsAffected = cmd.ExecuteNonQuery(); }
VB.NET
Dim connectionString As [String] = "DataModel=Relational;URI=C:\people.json" Using connection As New JSONConnection(connectionString) Dim cmd As New JSONCommand("SELECT personal.name.first, personal.name.last INTO [csv://NorthwindOData.txt] FROM [NorthwindOData] WHERE personal.name.last = 'ana.trujilo@northwind.org'", connection) Dim rowsAffected As Integer = cmd.ExecuteNonQuery() End UsingURI 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 = "DataModel=Relational;URI=C:\people.json"; using (JSONConnection connection = new JSONConnection(connectionString)) { JSONCommand cmd = new JSONCommand("SELECT * INTO [NorthwindOData] IN [csv://filename=c:/NorthwindOData.csv;delimiter=tab] FROM [NorthwindOData] WHERE personal.name.last = 'ana.trujilo@northwind.org'", connection); int rowsAffected = cmd.ExecuteNonQuery(); }
VB.NET
Dim connectionString As [String] = "DataModel=Relational;URI=C:\people.json" Using connection As New JSONConnection(connectionString) Dim cmd As New JSONCommand("SELECT * INTO [NorthwindOData] IN [csv://filename=c:/NorthwindOData.csv;delimiter=tab] FROM [NorthwindOData] WHERE personal.name.last = 'ana.trujilo@northwind.org'", connection) Dim rowsAffected As Integer = cmd.ExecuteNonQuery() End Using