SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function date_trunc (children 1)
     ExpressionList (children 3)
      Literal \'second\'
      Function toDateTime (children 1)
       ExpressionList (children 2)
        Literal \'2020-01-01 04:11:22\'
        Literal \'Europe/London\'
      Literal \'America/Vancouver\'