SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function hex (children 1)
     ExpressionList (children 1)
      Function sipHash128 (children 1)
       ExpressionList (children 3)
        Literal \'foo\'
        Literal \'foo\'
        Literal \'foo\'