Totalling up values across salesforce account hierarchies - salesforce

Question

I'm struggling to find an approach to the following problem, can anyone suggest a high level approach.
Using talend, I have an input set of values for a set of accounts (from CSV):
AccountId, ValueXYZ__c
I want to store ValueXYZ against the SFDC account, which is no problem, but then I want to totalise ValueXYZ up for all the accounts with the same parent to
Account.Parent.TotalValueXYZ
I then want to "roll" this all the way up the accounts hierarchy:
Imagine account hierarchy:
A
-B
--C
--D
-E
--F
--G
I want 3 values on A:
ValueXYZ = account A's ValueXYZ
TotalValueXYZ = total of ValueXYZ values for all accounts under A in the hierarchy
TOTAL = formula field to add together the previous 2 values
I want 3 values on account B
ValueXYZ = account B's ValueXYZ
TotalValueXYZ = total of ValueXYZ values for accounts C & D
TOTAL = formula field to add together the previous 2 values
I want 3 values on account C
ValueXYZ = account C's ValueXYZ
TotalValueXYZ = 0
TOTAL = formula field to add together the previous 2 values
I've tried several approaches, but can't get any of them to work!

Answer 1

Where is the hierarchy information stored? If you can flatten the hierarchy information in a key-value pair format, then it is straightforward. Just read your input file and do a lookup/join on the hierarchy file. You will have to loop through until you get to the base record

Answer 2

The crux of my problem was in not knowing each accounts position in a hierarchy. Once I had that in place, I could loop from the lowest level to the highest level, totalling these values up to their parents.
Here is the T-SQL I wrote to mark each account with it's Hierarchy Position (HILEVEL)
TRUNCATE TABLE [TALEND_WORKSPACE].[dbo].[SFDCAccount]
INSERT INTO [TALEND_WORKSPACE].[dbo].[SFDCAccount] (Id, ParentId, QCIYTDOneTime, QCIYTDRecurring, HILEVEL)
SELECT Id, ParentId, ValueXYZ, '0'
FROM [TALEND_WORKSPACE].[dbo].[SFDCAccountRawData]
WHERE ParentId = ' ';
USE TALEND_WORKSPACE
IF OBJECT_ID('dbo.sfdcaccounthierarchy', 'P') IS NOT NULL
DROP PROCEDURE [dbo].[sfdcaccounthierarchy];
GO
CREATE PROCEDURE [dbo].[sfdcaccounthierarchy]
AS
DECLARE #v_counter int;
DECLARE #v_lastccounter int;
DECLARE #v_max int;
SET #v_counter = 0;
SET #v_lastccounter = 0;
SET #v_max = 10;
WHILE (#v_counter < #v_max)
BEGIN
SET #v_lastccounter = #v_counter;
SET #v_counter = #v_counter+1;
PRINT #v_counter;
INSERT INTO [dbo].[SFDCAccount] (Id, ParentId, QCIYTDOneTime, QCIYTDRecurring, HILEVEL)
SELECT Id, ParentId, ValueXYZ, #v_counter
FROM [TALEND_WORKSPACE].[dbo].[SFDCAccountRawData]
WHERE ParentId IN (SELECT Id FROM [TALEND_WORKSPACE].[dbo].[SFDCAccount]
WHERE HILEVEL = #v_lastccounter);
if ##ROWCOUNT != 0
BREAK;
END
GO
EXEC [TALEND_WORKSPACE].[dbo].[sfdcaccounthierarchy];