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 Calculating Development Quarters
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Yak Posting Veteran

United Kingdom
68 Posts

Posted - 05/16/2013 :  09:18:48  Show Profile  Reply with Quote
I've been askde for the actuaries to change my triangle quarters

so instead of 1,2,3 beign Q1 it will be 2,3,4 being QI, 5,6,7 being Q2 8,9,10, BEING Q3 etc

it gets complicated though as triangle months dont stop at 12, they keep going so

11,12,13 will be q1, 14,15,16 will be q2 etc

In excel they use CEILING(TriangleMonth/3,1) but SQL doesnt have a significance step for its Ceiling function.

I cant seem to work out what maths I can use, if it was just 1-12 I'd use a case statement but thats not possible.

any ideas? :/ I've googled ceiling function and tride peoples ideas of creating a function to do it, but it doesnt seem to give same result as excel.

James K
Flowing Fount of Yak Knowledge

3873 Posts

Posted - 05/16/2013 :  11:13:10  Show Profile  Reply with Quote
Just do an integer division and take modulus, as in
((TriangleMonth+1)/3)%3 as Quarter
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James K
Flowing Fount of Yak Knowledge

3873 Posts

Posted - 05/16/2013 :  12:14:45  Show Profile  Reply with Quote
As I was eating lunch and thinking about it (yes, I do think about SQL while eating lunch :) I realized what I posted abover is not right - it returns 0 instead of 3 for the 3rd group. So change it to
I aliased them to Quarter in my previous query. Of course, they are not quarters in the conventional sense, per your description of it - I hope that is what you want.
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