Question about suming two columns from different tables in Subquery?

Hello everyone,
I have a subquery that works great for getting the total SUM of a Billing table, but I also need to add to that SUM the total surcharges or additional charges from a separate table. I tried this by doing something like so:
(SELECT SUM(SUM(Amount) FROM Billing WHERE Billing.JobID = Jobs.ID AND Billing.BillingType = 'Invoice' AND Billing.InvoiceCanceled = 'No', SUM(Payment) FROM Payments WHERE Payments.JobID = Jobs.ID AND Payments.Type = 'Bill')) as [Amount],
But it doesn't work as there is an incorrect syntax near 'FROM'. I'm assuming this is because of the two FROM's in the Subquery? But I am not sure how else I would be able to do this then?
Any help would be greatly appreciated. I just noticed this bug and am hoping to get a fix out as quickly as possible.
Thanks Again,

Hi, sorry for taking so long to get back to this post.
I tried this example like so:
(SELECT SUM(A1) AS Total1, SUM(A2) AS Total2
FROM
(SELECT
(SELECT SUM(Amount) FROM Billing WHERE Billing.JobID = Jobs.ID AND Billing.BillingType = 'Invoice' AND Billing.InvoiceCanceled = 'No') AS A1,
(SELECT SUM(Payment) FROM Payments WHERE Payments.JobID = Jobs.ID AND Payments.Type = 'Bill') AS A2),
However, get an error that an Incorrect Syntax exists near the ','. I remove the comma (Which I think should be there), and I get an error that an Incorrect Syntax exists near the '.'...
I also tried doing it like this (Based on other suggestions I've found online:
(SELECT SUM(SELECT SUM(Amount) FROM Billing WHERE Billing.JobID = Jobs.ID AND Billing.BillingType = 'Invoice' AND Billing.InvoiceCanceled = 'No') as [Amount],
(SELECT SUM(Payment) FROM Payments WHERE Payments.JobID = Jobs.ID AND Payments.Type = 'Bill') as [Additional]),
And I get an error that an Incorrect Syntax exists near 'SELECT'...
I also tried doing something like this with the SQL I already had...
(SELECT SUM(Amount) FROM Billing WHERE Billing.JobID = Jobs.ID AND Billing.BillingType = 'Invoice' AND Billing.InvoiceCanceled = 'No') as [BilledAmount],
(SELECT SUM(Payment) FROM Payments WHERE Payments.JobID = Jobs.ID AND Payments.Type = 'Bill') as [Additional],
SUM(BilledAmount + Additional) AS [TotalBilled],
But I get an error that the alias' are Invalid Column Names... I have used Alias' before so I'm not sure why this would be an issue here...
As you can see, I've been trying to figure this issue out, but haven't had much luck... :(

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Hi,
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oops my mistake.....typo mistake...it should have been as follows --
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Now here is the upated PL/SQL code where we are trying to update columns of different tables --
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HTH
BR
Sierdna S.

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Question about suming two columns from different tables in Subquery?

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