SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 2)
    Function toIPv4OrDefault (alias v) (children 1)
     ExpressionList (children 1)
      Literal \'hello\'
    Function toTypeName (children 1)
     ExpressionList (children 1)
      Identifier v
