round on sum to calculate share

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round on sum to calculate share

Author

Topic

slimt_slimt
Aged Yak Warrior

746 Posts

Posted - 2009-05-04 : 12:16:39

hi

my sample code:


create table temp 
(person varchar(10)
,department int
,hours float)

-- drop table temp

insert into temp
select 'A',11, 11.23 union all
select 'A',12, 23.21 union all
select 'A',13, 32.10 union all
select 'B',11, 34.1  union all
select 'B',12, 20    union all
select 'B',13, 21.10 union all
select 'C',11, 24


select 
person

,(select
sum(hours) from temp as t2
where t1.person = t2.person
) as total
,hours
,department
,(hours/(select
sum(hours) from temp as t2
where t1.person = t2.person
)) as share 

from temp as t1

i want to get "share" round up on two decimals format "0,24" that sums per person will add = 1

i can't get it right, using round, cast and convert :)

it should be a simple solution, i just do not see it :)

thank you for your help.

SwePeso
Patron Saint of Lost Yaks

30421 Posts

Posted - 2009-05-04 : 13:51:38

You want to round up to nearest hour?
Use CEILING.

SELECT		t.Person,
		x.Hours,
		t.Hours,
		t.Department,
		CAST(t.Hours / x.Hours AS DECIMAL(10, 2)) AS Peso,
		CEILING(t.Hours / x.Hours) AS Share
FROM		Temp AS t
INNER JOIN	(
			SELECT		Person,
					SUM(Hours) AS Hours
			FROM		Temp
			GROUP BY	Person
		) AS x ON x.Person = t.Person

E 12°55'05.63"
N 56°04'39.26"

slimt_slimt
Aged Yak Warrior

746 Posts

Posted - 2009-05-05 : 01:31:58

Peso thank you.

But if add additional values to this table, "Peso" column don't actually end up in sum = 1. It can also be sum = 1.01 or 0.99, etc. Column "Peso" CAST(t.Hours / x.Hours AS DECIMAL(10, 2)) should be calculated i believe first on sum and rounded (on two decimals) and than calculated on share (on two decimals).

any ideas?

SwePeso
Patron Saint of Lost Yaks

30421 Posts

Posted - 2009-05-05 : 01:38:45

Please post some proper sample data to demonstrate your summing business rules.
Also provide exakt expected output together with a thurough explanation.

E 12°55'05.63"
N 56°04'39.26"

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