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CREATE TABLE t( date DATE, revenue INT, balance INT); INSERT INTO t VALUES ('2021-05-03',0,1000), ('2021-05-21',500,1500), ('2021-05-23',-250,1250), ('2021-06-02',-500,750)
select year(date), month(date), (-1 + (max(case when seqnum_desc = 1 then balance end) / max(case when seqnum_asc = 1 then coalesce(prev_balance, balance) end) ) ) as growth from (select t.*, row_number() over (partition by year(date), month(date) order by date) as seqnum_asc, row_number() over (partition by year(date), month(date) order by date desc) as seqnum_desc, lag(balance) over (order by date) as prev_balance from t ) t group by year(date), month(date)
year(date)
month(date)
growth
2021
5
0.2500
2021
6
-0.4000