How do I SUM two cast columns and group by - sql

Question

I'm trying to produce a balance query. I have the following query below:
I would like to sum FunctAmt1 and FunctAmt2. (I had to use the cast function, as the data is varchar, and I needed to convert to number) SOLVED
I would then like to group by account number, so that I get one record per account. But when I group it errors at me. (With the below query I still see two multiple records per account, and not the total balance.
Any suggestions / support is greatly appreciated. thank you for help in solving point 1.
SELECT
[Company_number],
SC.[DESCRIPTION],
[account_number],
[account_description],
CAST([ACTL_FUNC_AMT] AS DEC(12,2)) + CAST([ACTL_BGNNG_MO_FUNC_AMT] AS DEC(12,2)) AS FunctAmt
FROM [balances]
JOIN [company_details] sc
ON [company_number] = [company_number]
WHERE [company_number] = '132' AND NOT CAST([ACTL_FUNC_AMT] AS DEC(12,2)) = 0 AND NOT CAST([ACTL_BGNNG_MO_FUNC_AMT] AS DEC(12,2)) = 0
GROUP BY [company_number],
SC.[DESCRIPTION],
[account_number],
[account_description],
[ACTL_FUNC_AMT],
[ACTL_BGNNG_MO_FUNC_AMT]
ORDER BY [account_number]

Answer 1

Without knowing what you've tried it's a little tough to say, but my guess is maybe you only added a group by account_number? You'll need to add the rest of the columns that aren't part of the aggregate. Is this what you're after?
SELECT
[Company_Number],
T2.[Company Description],
[Account_Number],
[Account_description],
SUM(CAST([ACTL_FUNC_AMT] AS DEC(12,2)) + CAST([ACTL_BGNNG_MO_FUNC_AMT] AS DEC(12,2))) AS FunctAmt
FROM [general_ledger_data]
JOIN [company_details] t2
ON [Company_Number] = [Company_Number1]
WHERE [Company_Number] = 'Comp1'
GROUP BY [Company_Number],
T2.[Company Description],
[Account_Number],
[Account_description]
ORDER BY [Account_Number]