protected function _process( array $stmts )
	{
		$this->_msg( 'Altering type of supplier_address id', 0 );

		foreach( $stmts as $table => $stmt )
		{
			if( $this->_schema->tableExists( $table )
				&& strtolower( $this->_schema->getColumnDetails( $table, 'id')->getDataType() ) == 'bigint' )
			{
				$this->_execute( $stmt );
				$this->_status( 'changed' );
			}
			else
			{
				$this->_status( 'OK' );
			}
		}
	}