SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 2)
    Function sum (alias x) (children 1)
     ExpressionList (children 1)
      Identifier number
    Function max (alias y) (children 1)
     ExpressionList (children 1)
      Identifier number
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier t_01568
   ExpressionList (children 1)
    WindowListElement
   ExpressionList (children 2)
    OrderByElement (children 1)
     Identifier x
    OrderByElement (children 1)
     Identifier y
