SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 2)
    Function toDateTime (alias date_time_value) (children 1)
     ExpressionList (children 1)
      Literal \'2021-04-14 11:22:33\'
    Function toDateTime64 (alias date_time_64_value) (children 1)
     ExpressionList (children 2)
      Literal \'2021-04-14 11:22:33\'
      Literal UInt64_3
   ExpressionList (children 2)
    Function dateName (children 1)
     ExpressionList (children 2)
      Literal \'second\'
      Identifier date_time_value
    Function dateName (children 1)
     ExpressionList (children 2)
      Literal \'second\'
      Identifier date_time_64_value