SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function toDateTime64OrDefault (children 1)
     ExpressionList (children 3)
      Literal \'Aaaa e a.a.aaaaaaaaa\'
      Literal UInt64_9
      Literal \'UTC\'