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  $schema['virtual'] = array(

    'description' => 'Basic test table with a reserved name.',

    'fields' => array(

      'id' => array(

        'type' => 'serial',

        'unsigned' => TRUE,

        'not null' => TRUE,

      ),

      'function' => array(

        'description' => "A column with a reserved name.",

        'type' => 'varchar',

        'length' => 255,

        'not null' => FALSE,

        'default' => '',

      ),

    ),

    'primary key' => array('id'),

  );