The question:
I have an issue that I want to count total data with 1 hour interval. However start time is 7:30
Time Status
2022-03-24 07:36:00, Fail
2022-03-24 07:59:00, Pass
2022-03-24 09:32:00, Pass
2022-03-24 09:41:00, Pass
2022-03-24 10:02:00, Fail
2022-03-24 11:02:00, Pass
2022-03-24 11:22:00, Fail
You can see that before 8:30 I have 2 data that 1 pass(07:59) and 1 fail(07:36) so I can count it and create data below
Time Status Total
2022-03-24 08:30 Pass 1
2022-03-24 08:30 Fail 1
2022-03-24 09:30 Pass 0
2022-03-24 09:30 Fail 0
2022-03-24 10:30 Pass 2
2022-03-24 10:30 Fail 1
2022-03-24 11:30 Pass 1
2022-03-24 11:30 Fail 1
The Solutions:
Below are the methods you can try. The first solution is probably the best. Try others if the first one doesn’t work. Senior developers aren’t just copying/pasting – they read the methods carefully & apply them wisely to each case.
Method 1
It sounds like you want group your datapoints with date_bin, which allows you to specify an origin time and a stride interval to use as an offset.
SELECT
date_bin('1 hour', Time, TIMESTAMP '2022-03-24 07:30:00') as Time,
Status,
count(*) as Total
FROM datapoints
GROUP BY 1, 2
ORDER BY 1, 2 DESC
All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0