SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function substring (children 1)
     ExpressionList (children 3)
      Function hex (children 1)
       ExpressionList (children 1)
        Function dateTimeToUUIDv7 (children 1)
         ExpressionList (children 1)
          Function toDateTime (children 1)
           ExpressionList (children 1)
            Literal \'2021-08-15 18:57:56\'
      Literal UInt64_13
      Literal UInt64_1