code: public function compile()
  	{
  		$conditions = $this->getConditions();
  
  		if (empty($conditions))
  		{
  			throw new \Peyote\Exception("\Peyote\Alter is an empty statement");
  		}
  
  		$query = array("ALTER", "TABLE", $this->getTable());
  
  		foreach ($conditions as $condition)
  		{
  			$query[] = rtrim(join(' ', $condition));
  		}
  
  		return join(' ', $query);
  	}
docs: {@inheritDoc}
  
  @throws \Peyote\Exception