SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Subquery (alias v) (children 1)
     SelectWithUnionQuery (children 1)
      ExpressionList (children 1)
       SelectQuery (children 1)
        ExpressionList (children 1)
         Function CAST (children 1)
          ExpressionList (children 2)
           Literal \'111111111111111111111111111111111111111\'
           Literal \'UInt128\'
   ExpressionList (children 2)
    Function sum (children 1)
     ExpressionList (children 1)
      Identifier x
    Function max (children 1)
     ExpressionList (children 1)
      Identifier v
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier test
