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I have a table that has id, usage, date(decimal date) this is a daily file.
I am summing the usage by id and grouping by id, year and month.
I have a udf that I apply to the date to convert it to a true date getdatesql(mydate)
So I might have
ID useage year month
1 10 2019 1
1 15 2019 2
2 5 2020 1
2 30 2020 2
SELECT id, sum(metereduse), year(getdatesql(readdate)),
month(getdatesql(readdate)) FROM dailyuse
GROUP BY id, year(getdatesql(readdate)), month(getdatesql(readdate))
ORDER BY id, year(getdatesql(readdate)), month(getdatesql(readdate))
I am not sure if I can or how I might do this, but
I would like to add a having clause that
Would identify the id, and usage that has say a 50% change between a given period. Could be a last month, this month,
Or last year, month vs this year, month
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