how to solve problem running code for MySQL8 on MySQL 5.7? - window-functions

Question

I have the following data:
+---------+--------+----------+------+-------+--------+-----------+
| xType | xAccID | xAccName | xCat | xYear | xMonth | xRaseed |
+---------+--------+----------+------+-------+--------+-----------+
| Amounts | 52 | Acc1 | Rs | 2020 | 11 | 3144.83 |
| Amounts | 52 | Acc1 | Rs | 2020 | 12 | -15199.64 |
| Amounts | 53 | Acc2 | Cus | 2020 | 12 | 5306.04 |
| Amounts | 53 | Acc2 | Cus | 2020 | 11 | 1090.64 |
+---------+--------+----------+------+-------+--------+-----------+
actually, I want to sum the (xRaseed) in the current row with the (xRaseed) in the previous row For each (xAccID) separately
the result that I want:
+---------+--------+----------+------+-------+--------+--------------------------------+
| xType | xAccID | xAccName | xCat | xYear | xMonth | xRaseed |
+---------+--------+----------+------+-------+--------+--------------------------------+
| Amounts | 52 | Acc1 | Rs | 2020 | 11 | 3144.83 |
| Amounts | 52 | Acc1 | Rs | 2020 | 12 | Not -15199.64 But (-12,054.81) |
| Amounts | 53 | Acc2 | Cus | 2020 | 12 | 5306.04 |
| Amounts | 53 | Acc2 | Cus | 2020 | 11 | Not 1090.64 But (6,396.68) |
+---------+--------+----------+------+-------+--------+--------------------------------+
I applied the following solution that I got from somebody here:
select t.*,
sum(xRaseed) over (partition by xAccID order by xYear, xMonth) as running_xRaseed
from t;
but everything was working in the local server but when I applied the solution on my hosting, didn't work?? in the local I use (xampp - 10.4.17-MariaDB), and in my hosting, I use (MySQL 5.7.23-23), what's the problem, please?
Here is a db<>fiddle

Answer 1

On versions of MySQL earlier than 8+, we can use a correlated subquery to find the rolling sum:
SELECT xType, xAccID, xAccName, xCat, xYear, xMonth,
(SELECT SUM(t2.xRaseed) FROM yourTable t2
WHERE t2.xAccID = t1.xAccID AND
(t2.xYear < t1.xYear OR
t2.xYear = t1.xYear AND t2.xMonth <= t1.xMonth)) AS xRaseed
FROM yourTable t1
ORDER BY
xAccId,
xYear,
xMonth;