ADO.NET Provider for Apache HBase

Build 21.0.7930

DELETE Statements

To delete information from a table, use DELETE statements.

DELETE Syntax

The DELETE statement requires the table name in the FROM clause and the row's primary key in the WHERE clause, as shown in the following example:

<delete_statement> ::= DELETE FROM <table_name> WHERE { Id = <expression> } [ { AND | OR } ... ]

<expression> ::=
  | @ <parameter> 
  | ?
  | <literal>

You can use the ExecuteNonQuery method to execute data manipulation commands and retrieve the number of affected rows, as shown in the following example:

C#

String connectionString = "Server=127.0.0.1;Port=8080;";
using (ApacheHBaseConnection connection = new ApacheHBaseConnection(connectionString)) {
  int rowsAffected;
  ApacheHBaseCommand cmd = new ApacheHBaseCommand("DELETE FROM Account WHERE Id = @myId", connection);
  cmd.Parameters.Add(new ApacheHBaseParameter("myId","1"));
  rowsAffected = cmd.ExecuteNonQuery();
}

VB.NET

  
Dim connectionString As [String] = "Server=127.0.0.1;Port=8080;"
Using connection As New ApacheHBaseConnection(connectionString)
  Dim rowsAffected As Integer
  Dim cmd As New ApacheHBaseCommand("DELETE FROM Account WHERE Id = @myId", connection)
  cmd.Parameters.Add(New ApacheHBaseParameter("myId", "1"))
  rowsAffected = cmd.ExecuteNonQuery()
End Using

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Build 21.0.7930