On February 20, 2023 6:07:19 PM GMT+07:00, Ihor Radchenko <yantar92@posteo.net> wrote:

Ilya Chernyshov <ichernyshovvv@gmail.com> writes:

 So, an option is needed that controls whether to return a 
 daterange
 (even it's possible to return a timerange) or a timerange (if the 
 dates
 in the range are equal).

 I wrote a patch that handles this problem, could you please review 
 the
 code and give some advice to improve it?

What about recording the type of timestamp range in the parser?
Then, interpreter can simply examine the range type and emit the correct
timestamp string.