http://friism.com/attribute-summing-in-crm-entity-hierarchies a Michael Friis production Wed, 18 Aug 2010 01:59:39 +0000 http://wordpress.org/?v=2.9.2 hourly 1 http://friism.com/attribute-summing-in-crm-entity-hierarchies/comment-page-1#comment-1228 immankSem Fri, 24 Apr 2009 14:43:39 +0000 http://www.itu.dk/~friism/blog/?p=15#comment-1228 hm... thanks :) hm… thanks

]]> http://friism.com/attribute-summing-in-crm-entity-hierarchies/comment-page-1#comment-1143 Randoom – Techniques for unique, correct and fast geo-queries II Tue, 27 Jan 2009 20:59:59 +0000 http://www.itu.dk/~friism/blog/?p=15#comment-1143 [...] query uses Common Table Expressions, which I’ve dabbled in before. Looking at the execution plan makes my head hurt, but it’s at least as fast as the original [...] [...] query uses Common Table Expressions, which I’ve dabbled in before. Looking at the execution plan makes my head hurt, but it’s at least as fast as the original [...]

]]> http://friism.com/attribute-summing-in-crm-entity-hierarchies/comment-page-1#comment-118 Niels Teglsbo Sat, 17 Nov 2007 13:42:33 +0000 http://www.itu.dk/~friism/blog/?p=15#comment-118 Challenge accepted. There is no need for the sum and group by in the base case. This gives the same result: <code> with num_employees as ( select accountid, numberofemployees from filteredaccount union all select fa.parentaccountid, y.numberofemployees from filteredaccount as fa inner join num_employees as y on y.accountid = fa.accountid ) select sum(numberofemployees),accountid from num_employees group by accountid </code> If accountid was not unique it might have made a difference, but in that case the expression doesn't work anyway. Challenge accepted.
There is no need for the sum and group by in the base case.
This gives the same result:

with num_employees as
(
select accountid,
numberofemployees
from filteredaccount
union all
select fa.parentaccountid,
y.numberofemployees
from filteredaccount as fa
inner join num_employees as y on y.accountid = fa.accountid
)
select sum(numberofemployees),accountid
from num_employees
group by accountid

If accountid was not unique it might have made a difference, but in that case the expression doesn’t work anyway.

]]>