How to sum Accounts by account code length? - sql

Question

I have 2 tables: DimAccounts and FactBudget.
DimAccounts example:
AccountKey AccountCode AccountName AccountGroup AccountType
1.6 1 6 1 NN 6 S
1.6 10 6 10 MMM 6 S
1.6 101 6 101 TTT 6 S
1.6 1010 6 1010 IIII 6 B
1.6 1011 6 1011 OOOO 6 B
1.6 1012 6 1012 KKK 6 B
FactBudget example:
TimeKey AccountKey Debit Credit
20110719 1.6 1010 20.00 5.00
20110719 1.6 1011 15.00 0.00
20110719 1.6 1000 5.00 0.00
20110719 1.6 1012 10.00 5.00
20110719 1.6 1112 10.00 0.00
In FactBudget are many Accounts just with type B. I need to get Debit and Credit Sums for Account type S (Sum).
Solution example for example data:
TimeKey AccountKey Debit Credit
20110719 1.6 1 60.00 10.00
20110719 1.6 10 50.00 10.00
20110719 1.6 101 45.00 10.00
To calculate debit and credit for sum account 1.6 101 (7 symbols with whitespace) we need to substring all acounts in factbudget up to 7 symbols (1.6 1012 -> 1.6 101, 1.6 1112 -> 1.6 111, 1.6 1011->1.6 101) and then where are they equal
(1.6 101 = 1.6 101) to group by timekey and sum debit and credit.
To calculate debit and credit for sum account 1.6 1 (5 symbols with whitespace) we need to substring all acounts in factbudget up to 5 symbols (1.6 1012 -> 1.6 1, 1.6 1112 -> 1.6 1, 1.6 1011->1.6 1) and then where are they equal
(1.6 1 = 1.6 1) to group by timekey and sum debit and credit:) and so on.
So, How to get S Accounts Debit and Cred Sum by TimeKey and AccountKey?

Answer 1

Basically, you could take this answer and just change one of the join conditions:
SELECT
f.TimeKey,
s.AccountKey,
SUM(f.Debit) AS Debit,
SUM(f.Credit) AS Credit
FROM DimAccounts s
INNER JOIN DimAccounts b ON b.AccountCode LIKE s.AccountCode + '%'
/* alternatively: ON s.AccountCode = LEFT(b.AccountCode, LEN(s.AccountCode)) */
INNER JOIN FactBudget f ON f.AccountKey = b.AccountKey
WHERE s.AccountType = 'S'
AND b.AccountType = 'B'
GROUP BY
f.TimeKey,
s.AccountKey

Answer 2

SELECT F.TimeKey,
D.AccountKey,
SUM(F.Debit) Debit,
SUM(F.Credit) Credit
FROM DimAccounts D
INNER JOIN FactBudget F ON F.AccountKey LIKE D.AccountKey + '%'
WHERE D.AccountType = 'S'
GROUP BY F.TimeKey,
D.AccountKey

Answer 3

Maybe something like this:
SELECT
FactBudget.TimeKey,
DimAccounts.AccountKey,
SUM(FactBudget.Debit) AS Debit,
SUM(FactBudget.Credit) AS Credit
FROM
DimAccounts
JOIN FactBudget
ON DimAccounts.AccountKey=
SUBSTRING(FactBudget.AccountKey,0,DATALENGTH(DimAccounts.AccountKey)+1)
WHERE
DimAccounts.AccountType='S'
GROUP BY
FactBudget.TimeKey,
DimAccounts.AccountKey