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 = "User=abc123; Password=abcdef;"; using (CloudantConnection connection = new CloudantConnection(connectionString)) { CloudantCommand cmd = new CloudantCommand("SELECT MovieRuntime, MovieRating INTO [csv://Movies.txt] FROM [Movies] WHERE MovieRating = 'R' ", connection); int rowsAffected = cmd.ExecuteNonQuery(); }
VB.NET
Dim connectionString As [String] = "User=abc123; Password=abcdef;" Using connection As New CloudantConnection(connectionString) Dim cmd As New CloudantCommand("SELECT MovieRuntime, MovieRating INTO [csv://Movies.txt] FROM [Movies] WHERE MovieRating = 'R'", 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 = "User=abc123; Password=abcdef;"; using (CloudantConnection connection = new CloudantConnection(connectionString)) { CloudantCommand cmd = new CloudantCommand("SELECT * INTO [Movies] IN [csv://filename=c:/Movies.csv;delimiter=tab] FROM [Movies] WHERE MovieRating = 'R'", connection); int rowsAffected = cmd.ExecuteNonQuery(); }
VB.NET
Dim connectionString As [String] = "User=abc123; Password=abcdef;" Using connection As New CloudantConnection(connectionString) Dim cmd As New CloudantCommand("SELECT * INTO [Movies] IN [csv://filename=c:/Movies.csv;delimiter=tab] FROM [Movies] WHERE MovieRating = 'R'", connection) Dim rowsAffected As Integer = cmd.ExecuteNonQuery() End Using