SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Asterisk
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 2)
         SelectQuery (children 1)
          ExpressionList (children 1)
           Function tuple (alias a) (children 1)
            ExpressionList (children 1)
             Literal UInt64_1
         SelectQuery (children 1)
          ExpressionList (children 1)
           Function tuple (alias a) (children 1)
            ExpressionList (children 1)
             Literal UInt64_1
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier a