Hello Eugen, Wednesday, November 11, 2020, 8:50:59 PM, you wrote:
> Hello Pgsql-hackers, > Seems I fall into corner case: test=>> SELECT * FROM generate_series( '2020-11-09', '2020-11-09', INTERVAL '00:00:00' ); > ERROR: step size cannot equal zero > But: test=>> SELECT * FROM generate_series( '2020-11-09', '2020-11-10', INTERVAL '1 day' ); > generate_series > ------------------------ > 2020-11-09 00:00:00+02 > 2020-11-10 00:00:00+02 > (2 rows) > Here we start at 2020-11-09, add interval of one day and finish at > 2020-11-10 > Done! series is generated. > In first case I expect that I start at 2020-11-09, add interval of zero > and finish at 2020-11-09 > Everything is consistent. test=>> SELECT * FROM generate_series( '2020-11-09', '2020-11-09', INTERVAL '00:00:00' ); > generate_series > ------------------------ > 2020-11-09 00:00:00+02 > (1 row) > So I feature request to allow zero size step for cases when start > point is equest to finish > What do you think? hm.... probably with step 0 we always should generate series of one value and exit, despite on finish value. Because with step 0 we always stay at current position, so there is always should be just one value. -- Best regards, Eugen Konkov
