SQL Sum Multiple rows into one

Question

I need some help with the SUM feature. I am trying to SUM the bill amounts for the same account into one grand total, but the results I am getting show my SUM column just m

Answer 1

Thank you for your responses. Turns out my problem was a database issue with duplicate entries, not with my logic. A quick table sync fixed that and the SUM feature worked as expected. This is all still useful knowledge for the SUM feature and is worth reading if you are having trouble using it.