Am 12.05.23 um 13:04 schrieb Durumdara:
[...]The LAG function seems to be ok, but how to handle if more than two periods are missing? 03:00 10 03:01 NULL 03:02 NULL 03:03 NULL 03:04 11 03:05 13 [...]
and how do you think about NULL in first(and second/third) row?
