Rolling sum based on date range in sql
12,809
Solution 1
This would normally be handled using the windowing clause with sum()
:
select t.*,
sum(qt) over (order by date rows between 9 preceding and current row)
from t;
I don't know if SAP Hana supports this syntax. SQL Server does.
Solution 2
Try this...
select
ID
,Date
,Qt
,SUM(Qt) OVER (ORDER BY ID ROWS BETWEEN UNBOUNDED PRECEDING AND 0 PRECEDING) AS 'Roll10Day'
from [TABLE NAME]
Author by
Jay
Updated on June 16, 2022Comments
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Jay almost 2 years
Looking for a performance effective SQL code to calculate Rolling Sum based on DATE Sum. My data looks like:
+----+-----------+----+ | ID | Date | Qt | +----+-----------+----+ | 1 | 1/12/2009 | 2 | | 2 | 1/13/2009 | 3 | | 3 | 1/14/2009 | 10 | | 4 | 1/15/2009 | 2 | | 5 | 1/16/2009 | 3 | | 6 | 1/17/2009 | 7 | | 7 | 1/18/2009 | 5 | | 8 | 1/19/2009 | 4 | | 9 | 1/20/2009 | 2 | | 10 | 1/21/2009 | 3 | | 11 | 1/22/2009 | 10 | | 12 | 1/23/2009 | 2 | | 13 | 1/24/2009 | 3 | | 14 | 1/25/2009 | 7 | | 15 | 1/26/2009 | 5 | | 16 | 1/27/2009 | 4 | | 17 | 1/28/2009 | 1 | | 18 | 1/29/2009 | 0 | | 19 | 1/30/2009 | 8 | | 20 | 1/31/2009 | 9 | +----+-----------+----+
Output should be like:
+----+-----------+----+-----------+ | ID | Date | Qt | Roll10Day | +----+-----------+----+-----------+ | 1 | 1/12/2009 | 2 | 2 | | 2 | 1/13/2009 | 3 | 5 | | 3 | 1/14/2009 | 10 | 15 | | 4 | 1/15/2009 | 2 | 17 | | 5 | 1/16/2009 | 3 | 20 | | 6 | 1/17/2009 | 7 | 27 | | 7 | 1/18/2009 | 5 | 32 | | 8 | 1/19/2009 | 4 | 36 | | 9 | 1/20/2009 | 2 | 38 | | 10 | 1/21/2009 | 3 | 41 | | 11 | 1/22/2009 | 10 | 49 | | 12 | 1/23/2009 | 2 | 48 | | 13 | 1/24/2009 | 3 | 41 | | 14 | 1/25/2009 | 7 | 46 | | 15 | 1/26/2009 | 5 | 48 | | 16 | 1/27/2009 | 4 | 45 | | 17 | 1/28/2009 | 1 | 41 | | 18 | 1/29/2009 | 0 | 37 | | 19 | 1/30/2009 | 8 | 43 | | 20 | 1/31/2009 | 9 | 49 | +----+-----------+----+-----------+
Can we achieve it using a window function? I know I can get it be using inner query in SQL.
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Jay about 6 yearsI was just thinking, if there is way to replace "BETWEEN 9 PRECEDING AND CURRENT ROW" by "BETWEEN [DATE - 9] and [DATE]"
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Jay about 6 yearsI was just thinking if there is way to replace "BETWEEN 9 PRECEDING AND CURRENT ROW" by "BETWEEN [DATE - 9] and [DATE]"
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Gordon Linoff about 6 years@Jay . . . I don't believe SQL Server supports that.