MySQL cumulative sum grouped by date but exclude after certain date - mysql

Question

I have a query involving dates that is really close to being complete, but I can't quite get the last part. The table columns are:
purchased TINYINT
purchased_date DATE
expired TINYINT
expiration_date DATE
The query I'm running is this:
SELECT
e_date,
num_interactions,
#runningTotal := #runningTotal + totals.num_interactions AS runningTotal
FROM
(SELECT
DATE(purchase_date) AS e_date,
COUNT(*) AS num_interactions
FROM domain_names AS d
WHERE purchased = 1
AND purchase_date != "0000-00-00"
GROUP BY DATE(d.purchase_date)) totals
ORDER BY e_date;
It works well, but I need one final adjustment. I need to exclude/subtract the names from the running total that were expired (based on expiration date) after the e_date.
In other words, if the running total shouldn't count a domain after the date it has expired. Thank you so much for any advice here. This is my first post here, so hopefully I've explained it clearly.
EDIT:
I've put together an MCRE:
CREATE TABLE IF NOT EXISTS `domain_names` (
`id` bigint(20) NOT NULL AUTO_INCREMENT,
`name` varchar(255) DEFAULT NULL,
`purchased` tinyint(1) DEFAULT NULL,
`purchase_date` date DEFAULT NULL,
`expired` tinyint(1) DEFAULT NULL,
`expiration_date` date DEFAULT NULL,
PRIMARY KEY (`id`),
KEY `index_domain_names_on_id` (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;
INSERT INTO `domain_names` (`id`, `name`, `purchased`, `purchase_date`, `expired`, `expiration_date`) VALUES
('1', 'example1.com', '1', '2019-01-12', NULL, '2019-08-12'),
('2', 'example2.com', '1', '2019-01-12', NULL, '2020-10-12'),
('3', 'example3.com', '1', '2019-01-12', '1', '2019-10-12'),
('4', 'example4.com', '1', '2019-10-12', NULL, '2020-10-12'),
('5', 'example2.com', '1', '2019-03-19', NULL, '2020-03-19'),
('6', 'example3.com', '1', '2019-08-19', NULL, '2020-08-10'),
('7', 'example4.com', '1', '2019-11-28', NULL, '2020-10-12');
http://sqlfiddle.com/#!9/2d9f71/1/1

Answer 1

Here is a different approach not relying on variables and subqueries
SELECT
DATE(d.purchase_date),
COUNT(DISTINCT d.id) AS num_interactions,
COUNT(DISTINCT c.id) AS cumulative_sum_not_expired
FROM domain_names AS d
LEFT JOIN domain_names AS c ON (DATE(c.purchase_date) <= DATE(d.purchase_date)
AND c.purchased = 1
AND c.purchase_date != 0
AND c.expiration_date >= CURDATE())
WHERE d.purchased = 1
AND d.purchase_date != 0
GROUP BY 1
ORDER BY 1;
http://sqlfiddle.com/#!9/2d9f71/36/0
You can adjust the exclusion here :
c.expiration_date >= CURDATE()

Answer 2

if you need exclude expired domains, then you should add where clause expiration_date > CURDATE() to couning subquery or count only not expired domains COUNT(case when expiration_date > CURDATE() then 1 end)...
SET #runningTotal := 0;
SET #runningTotalNE := 0;
SELECT
e_date,
num_interactions,
#runningTotal := #runningTotal + totals.num_interactions AS runningTotal,
#runningTotalNE := #runningTotalNE + totals.notexpired AS runningTotalNotExpired
FROM
(SELECT
purchase_date AS e_date,
COUNT(*) AS num_interactions,
COUNT(case when expiration_date > CURDATE() then 1 end) AS notexpired
FROM domain_names AS d
WHERE purchased = 1
/*AND expiration_date > CURDATE()*/
AND purchase_date != "0000-00-00"
GROUP BY d.purchase_date) totals
ORDER BY e_date