I have 3 main fields: _time, total_vehicle, and changes. total_vehicle is only generate periodically and I would like to find out what is happening in between with the "changes" field. Just plainly putting them in table I get:
_time min(vehicle_count) change
2017-03-15 00:32:00 18
2017-03-15 00:34:00 1
2017-03-15 00:35:00 1
2017-03-15 00:36:00 1
2017-03-15 01:25:00 -1
2017-03-15 01:26:00 -1
2017-03-15 01:27:00 -1
2017-03-15 01:28:00 -1
2017-03-15 01:55:00 17
2017-03-15 04:51:00 17
2017-03-15 04:59:00 1
2017-03-15 05:03:00
What I wish to obtain is to concatenate them into one single cumulative table:
_time min(vehicle_count)
2017-03-15 00:32:00 18
2017-03-15 00:34:00 19
2017-03-15 00:35:00 20
2017-03-15 00:36:00 21
2017-03-15 01:25:00 20
2017-03-15 01:26:00 19
2017-03-15 01:27:00 18
2017-03-15 01:28:00 17
2017-03-15 01:55:00 17
and etc
Does anyone have any idea on how I might be able to achieve that?
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