array $options - array of options. The array key defines the option to set. Avaible options are:
boolean $options['nested'] - if TRUE the result of an join query will be nested. The default value is FALSE.
boolean $options['tagNameRow'] - name for the row mark up tag. Default is >row<
boolean $options['tagNameResult'] - name for the result-set mark up tag. Default is >result<
constant $delete - the old sub options should be deleted