/**
* Creates a new select query which includes all fields in the migrations
* table plus a `id` field which is a combination of the timestamp and the
* description
*
* @return Database_Query_Builder_Select
*/
protected function _select()
{
$group = $this->_db->quote_column('group');
$timestamp = $this->_db->quote_column('timestamp');
$id = $this->_db->quote_column('id');
$colon = $this->_db->quote(':');
return DB::select('*')->from($this->_table);
}
