SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 4)
    Function sum (children 1)
     ExpressionList (children 1)
      Identifier x
    Function sum (children 1)
     ExpressionList (children 1)
      Identifier i256
    Function sum (children 1)
     ExpressionList (children 1)
      Identifier u256
    Function sum (children 1)
     ExpressionList (children 1)
      Identifier d256
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier t
