How to sum field values ​​by unique ID in SQL query?

Question

SQL

There is a table with the amounts of payments on the debts of counterparties. It is necessary to formulate a query that will sum the values ​​of the amount_of_payment field for each unique id_debt and, as a result, return the total amount of payments for each debt separately. That is, the resulting table should look like this:

Answer 1

select id_debt, sum(amount) from tablename where /**/ group by id_debt;