def quote_table_name(name)
      name.to_s.split('.').map{ |n| n.split('@').map{ |m| quote_column_name(m) }.join('@') }.join('.')
    end
def quote_table_name(name)
      name.to_s.split('.').map{ |n| n.split('@').map{ |m| quote_column_name(m) }.join('@') }.join('.')
    end
QUOTING ==================================================
 @override