SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function date_trunc (children 1)
     ExpressionList (children 2)
      Literal \'month\'
      Function toDate (children 1)
       ExpressionList (children 2)
        Literal \'2020-01-01\'
        Literal \'Europe/London\'