balance changes with overall total

Для текущей структуры проекта

Вывод всех изменений с подсчетом суммарного баланса

SELECT 
    subltree(i.order_id, 1,2) AS user_id,
    i.invoice_id, 
    i.paid,
    a.account_type,
    bc.change_id, 
    bc.amount,
    bc.balance,
    tx.transaction_id,
    tx.status,

    sum((case when a.account_type IN ('customer', 'system') then bc.amount
      else -bc.amount end)) OVER (PARTITION BY subltree(i.order_id, 1,2) ORDER BY bc.change_id) AS bbb

     FROM finances.balance_changes as bc
    LEFT JOIN finances.transactions as tx ON bc.transaction_id = tx.transaction_id
    LEFT JOIN finances.invoices as i ON i.invoice_id = tx.invoice_id
    LEFT JOIN finances.accounts as a ON bc.account_id = a.account_id

WHERE a.account_type IN ('customer', 'credit')

ORDER BY bc.created_at DESC;

gebv / acca

balance changes with overall total #8