ADO.NET Provider for HDFS

Build 21.0.7930

Tables

The Tables schema collection lists all tables in the database

Retrieving the Table Listing

To retrieve the Tables schema collection, call the GetSchema method of the HDFSConnection class.

C#

String connectionString = "Host=sandbox-hdp.hortonworks.com;Port=50070;Path=/user/root;";

using (HDFSConnection conn = new HDFSConnection(connectionString)) {
  conn.Open();
  DataTable databaseSchema = conn.GetSchema("Tables");
  foreach (DataRow row in databaseSchema.Rows) {
    Console.WriteLine(row["TABLE_NAME"]);
  }
}

VB.NET

Dim connectionString As String = "Host=sandbox-hdp.hortonworks.com;Port=50070;Path=/user/root;"

Using conn As New HDFSConnection(connectionString)
  conn.Open()
  Dim databaseSchema As DataTable = conn.GetSchema("Tables")
  For Each row As DataRow In databaseSchema.Rows
    Console.WriteLine(row("TABLE_NAME"))
  Next
End Using

Columns Returned

The Tables schema collection returns the following columns.

Column NameData TypeDescription
TABLE_CATALOGSystem.StringThe database that contains the table.
TABLE_SCHEMASystem.StringThe schema that contains the table.
TABLE_NAMESystem.StringThe table name.
TABLE_TYPESystem.StringThe table type.

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Build 21.0.7930