I have the following query:
SELECT
SUM(\"balance_transactions\".\"fee\") AS sum_id
FROM \"balance_transactions\"
JOIN charges ON balance_transactions
SELECT periods.start_date,
periods.end_date,
SUM(fee) AS Period_Sum
FROM "balance_transactions"
JOIN charges ON balance_transactions.source = charges.balance_id
JOIN
(SELECT CAST('2013-12-20' AS DATE) AS start_date, CAST('2014-01-19' AS DATE) AS end_date UNION ALL
SELECT CAST('2013-12-21' AS DATE),CAST('2014-01-20' AS DATE) UNION ALL
SELECT CAST('2013-12-22' AS DATE), CAST('2014-01-21' AS DATE) UNION ALL
SELECT CAST('2013-12-23' AS DATE), CAST('2014-01-22' AS DATE) UNION ALL
SELECT CAST('2013-12-24' AS DATE), CAST('2014-01-23' AS DATE)) as periods
ON "balance_transactions"."created" BETWEEN periods.start_date AND periods.end_date
WHERE "balance_transactions"."account_id" = 6
AND (balance_transactions.type = 'charge'
AND charges.refunded = false
AND charges.invoice IS NOT NULL)
GROUP BY periods.start_date, periods.end_date
Here is link to SQL Fiddle Where I tested it: http://sqlfiddle.com/#!10/535ac/11/0