code: public function assemble()
  	{
  		$command = 
  			'CREATE ' . 
  				$this->getPartIfSet(self::PART_TEMP) .
  			'TABLE ' . 
  				$this->getPartIfSet(self::PART_IF_NOT_EXIST) .
  				$this->parts[self::PART_DB] . $this->parts[self::PART_NAME];
  		
  		if ($this->parts[self::PART_LIKE])
  		{
  			return $command . ' ' . $this->parts[self::PART_LIKE];
  		}
  		
  		if (!$this->columnsList->isEmpty())
  		{
  			$command .= '(';
  			
  			$columns = $this->columnsList->assemble();
  			$keys = $this->indexes->assemble();
  			$combined = array_merge($columns, $keys);
  			$command .= implode(',', $combined);
  			
  			$command .= ') ' . 
  				$this->getPartIfSet(self::PART_ENGINE, 'ENGINE=') .
  				$this->getPartIfSet(self::PART_CHARSET, 'CHARSET=') .
  				$this->getPartIfSet(self::PART_CHARSET, 'AUTO_INCREMENT=') .
  				$this->getPartIfSet(self::PART_COMMENT, 'COMMENT=');
  		}
  		
  		if ($this->parts[self::PART_AS]) 
  		{
  			$command .= " {$this->getAsExpression()}";
  		}
  		
  		return $command;
  	}
docs: Generate the query string.
  @return string Currently set query.