Question

I am wrote this SQL:

select distinct PayID, PaymentDate, AccountNumber, sum(PaymentAmount) as Amount 
from tblInvoicePaymentDetails 
where CustomerID = 'mud4978' 
group by PayID, PaymentDate, AccountNumber

Output is:

PayID    PayDate                    Account      Amount
1        2011-07-05 11:09:14.390    NULL       700.00
1        2011-07-05 11:09:14.407    NULL       100.00
2        2011-07-05 11:20:05.517    NULL       0.00
2        2011-07-05 11:20:05.547    9000       500.00
2        2011-07-05 11:20:07.000    9000       100.00
3        2011-07-05 12:19:22.017    100000     200.00
3        2011-07-05 12:19:22.077    100000     100.00

But my requirements are to display 3 records (avoid duplicates) and sum of amount like this:

payid         paydate             account       amount
1           2011-07-05 11:09:14   null          800.00
2           2011-07-05 11:20:05   9000          600.00
3           2011-07-05 12:19:22   100000        300.00

please help

Answer 1

It looks like you only want to group by PayID (otherwise other columns will be taken into account).

PayDate varies, so if you want one of those values you need to pick which exact PayDate you want in your output. You may wish to consider Max or Min to pick one that exists already.

Account also varies, so again you need to pick one using something like Min or Max

Your query would then look something like this:

SELECT DISTINCT 
    PayID, 
    MIN(PaymentDate) AS PaymentDate, 
    MAX(AccountNumber) as AccountNumber, 
    SUM(PaymentAmount) as Amount 
FROM tblInvoicePaymentDetails 
WHERE CustomerID='mud4978' 
GROUP BY PayID