Comments on: ORACLE Question – Split data in 90 days chunk

By: ORACLE Question – Split data in 90 days chunk (Q/A) | Seek The Sun Slowly

Fri, 08 Jun 2012 06:11:40 +0000

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By: mroracle

mroracle — Fri, 28 Oct 2005 10:04:43 +0000

You didn’t mention what version on Oracle, but I think you are looking for a CASE statement. I believe it might be a version 9i feature. Here is a sample piece of code:

SQL> r
1 select case
2 when creation_date_time between to_date(’05-JAN-2005′) and to_date(’05-JAN-2005′)+90
3 then 1
4 when creation_date_time between to_date(’10-MAY-2005′) and to_date(’10-MAY-2005′)+90
5 then 2
6 else 3
7 end date_grouping
8 , count(*)
9 from mtg_partner
10 group by case
11 when creation_date_time between to_date(’05-JAN-2005′) and to_date(’05-JAN-2005′)+90
12 then 1
13 when creation_date_time between to_date(’10-MAY-2005′) and to_date(’10-MAY-2005′)+90
14 then 2
15 else 3
16* end

DATE_GROUPING COUNT(*)
————- ———-
1 63
2 57
3 229

3 rows selected.

I hope this helps!

((MrO))

By: structsound

structsound — Fri, 28 Oct 2005 09:51:00 +0000

You can use an analytic query to get the sums
select qty, date, sum(qty) over (order by date range between current row and interval ’90′ day following) 90daysum from…..

then you’ll have to work an outer query to only show the dates within the 90 day span–probably using lag and lead. AskTom has some good examples, as well as the Oracle Data Warehousing Guide documentation