SelectWithUnionQuery (children 2)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 3)
    Literal \'Hello & world\' (alias s)
    Function toDateTime (alias time) (children 1)
     ExpressionList (children 1)
      Literal \'2001-02-03 04:05:06\'
    Function tuple (alias tpl) (children 1)
     ExpressionList (children 2)
      Identifier s
      Identifier time
   Set
 Identifier XML