using "OR" and "HAVING SUM" Mysql 5.7 - mysql

Question

this is my fiddle :https://dbfiddle.uk/?rdbms=mysql_5.7&fiddle=71b1fd5d8e222ab1c51ace8d1af4c94f
CREATE TABLE order_match(ID int(10) NOT NULL PRIMARY KEY AUTO_INCREMENT,
quantity decimal(10,2), createdAt date NOT NULL, order_status_id int(10) NOT NULL,
createdby int(11), code_order varchar(20) NOT NULL);
insert into order_match values
(1, 0.2, '2020-02-02', 6, 01, 0001),
(2, 1, '2020-02-03', 7, 02, 0002),
(3, 1.3, '2020-02-04', 7, 03, 0003),
(4, 1.4, '2020-02-08', 5, 08, 0004),
(5, 1.2, '2020-02-05', 8, 04, 0005),
(6, 1.4, '2020-03-01', 8, 05, 0006),
(7, 0.23, '2020-01-01', 8, 03, 0007),
(8, 2.3, '2020-02-07', 8, 04, 0009);
and then this is my table
select order_status_id, createdby, createdAt from order_match;
+-----------------+-----------+------------+
| order_status_id | createdby | createdAt |
+-----------------+-----------+------------+
| 6 | 1 | 2020-02-02 |
| 7 | 2 | 2020-02-03 |
| 7 | 3 | 2020-02-04 |
| 5 | 8 | 2020-02-08 |
| 8 | 4 | 2020-02-05 |
| 8 | 5 | 2020-03-01 |
| 8 | 3 | 2020-01-01 |
+-----------------+-----------+------------+
order_status_id are the status of transaction, "7" means no approval transaction, else are approval, createdby are the id of users who doing transaction, and createdAt are the date of transaction happen.
so i want to find out the repeat users who doing transaction in between '2020-02-01' and '2020-02-28', repeat users are the users who doing approval transaction before '2020-02-28' and atleast doing 1 more approval transaction again in date range ('2020-02-01' until '2020-02-28')
based on the explanation i used this query :
SELECT s1.createdby
FROM order_match s1
WHERE s1.order_status_Id in (4, 5, 6, 8)
GROUP BY s1.createdby
HAVING SUM(s1.createdAt BETWEEN '2020-02-01' AND '2020-02-28')
AND SUM(s1.createdAt <= '2020-02-28') > 1
OR exists (select 1 from order_match s1 where
s1.createdAt < '2020-02-01'
and s1.order_status_id in (4, 5, 6, 8));
from that query, the result was this :
+-----------+
| createdby |
+-----------+
| 1 |
| 3 |
| 4 |
| 5 |
| 8 |
+-----------+
and the expected results based on the data and explanation was like this :
+-----------+
| createdby |
+-----------+
| null |
+-----------+
because there's no users who fit with "repeat users" condition. where my wrong at?

Answer 1

Looks like
SELECT createdby
FROM order_match
-- select rows in specified data range
WHERE createdAt BETWEEN '2020-02-01' AND '2020-02-28'
GROUP BY createdby
-- check that user has more than one transaction which' status is not non-approved
HAVING SUM(order_status_id != 7) > 1 -- or SUM(order_status_id in (4, 5, 6, 8)) > 1
that's why i used or exists to check the users before '2020-02-01'
Sorry, I have understood the task wrongly.
SELECT createdby
FROM order_match
GROUP BY createdby
-- check that user has more than one transaction which' status is not non-approved
HAVING SUM(order_status_id != 7) > 1
-- and at least one of them is in specified data range
AND SUM(order_status_id != 7 AND createdAt BETWEEN '2020-02-01' AND '2020-02-28')
where my wrong at?
In WHERE IN - this condition gives TRUE for each createdby who has at least one approved transacions, because this transaction checks self in this condition.
Additionally - s1.createdAt BETWEEN '2020-02-01' AND '2020-02-28' overlaps s1.createdAt <= '2020-02-28', so 2nd condition is excess (if 1st is true then 2nd is true too).