add sum of all values mysql query - mysql

Question

select(sum(
if (lower(st.c_gender) = 'male', 1, 0)) - ifnull(le.male, 0)) as male, (sum(
if (lower(st.c_gender) = 'female', 1, 0)) - ifnull(le.female, 0)) as female, FROM_UNIXTIME(st.c_admissionDate, '%Y') as year, le.male, le.female
from(SELECT s.*, zone.id as zoneid FROM groups s left join groups as zone ON s.parent_id = zone.id where s.id != s.parent_id) g, group_to_user u, student st
left join(SELECT ifnull(sum(
if (lower(l.c_gender) = 'male', 1, 0)), 0) as male, ifnull(sum(
if (lower(l.c_gender) = 'female', 1, 0)), 0) as female, FROM_UNIXTIME(l.c_leavingDate, '%Y') as year from student l
where l.c_leavingDate is not null group by FROM_UNIXTIME(l.c_leavingDate, '%Y')) as le on le.year = FROM_UNIXTIME(st.c_admissionDate, '%Y')
where g.id = u.groupid and st.c_userId = u.userId group by FROM_UNIXTIME(st.c_admissionDate, '%Y')
the above query returns the following output ,
male female year male female
1860 657 1970 NULL NULL
2 4 2012 NULL NULL
3 0 2013 NULL NULL
470 370 2014 0 1
0 365 2015 NULL NULL
0 367 2016 NULL NULL
1 260 2017 1 2
from the above output need to sum the before values like the following output
male female year male female
1860 657 1970 NULL NULL
1862 661 2012 NULL NULL
1865 661 2013 NULL NULL
2335 1031 2014 0 1
2335 1396 2015 NULL NULL
2335 1763 2016 NULL NULL
2336 2023 2017 1 2
anyway to make the output like the above help me

Answer 1

set #msum := 0;
set #fsum := 0;
select (#msum := #msum + T.male_sum) as male_sum, (#fsum := #fsum + T.female_sum) as female_sum, T.year, T.male, T.female
from (
select(sum(
if (lower(st.c_gender) = 'male', 1, 0)) - ifnull(le.male, 0)) as male_sum, (sum(
if (lower(st.c_gender) = 'female', 1, 0)) - ifnull(le.female, 0)) as female_sum, FROM_UNIXTIME(st.c_admissionDate, '%Y') as year, le.male, le.female
from(SELECT s.*, zone.id as zoneid FROM groups s left join groups as zone ON s.parent_id = zone.id where s.id != s.parent_id) g, group_to_user u, student st
left join(SELECT ifnull(sum(
if (lower(l.c_gender) = 'male', 1, 0)), 0) as male, ifnull(sum(
if (lower(l.c_gender) = 'female', 1, 0)), 0) as female, FROM_UNIXTIME(l.c_leavingDate, '%Y') as year from student l
where l.c_leavingDate is not null group by FROM_UNIXTIME(l.c_leavingDate, '%Y')) as le on le.year = FROM_UNIXTIME(st.c_admissionDate, '%Y')
where g.id = u.groupid and st.c_userId = u.userId group by FROM_UNIXTIME(st.c_admissionDate, '%Y')
)T;
Simplify this query but this will give you a general idea. Cannot be done in a non procedural query.

Answer 2

You really need a column for a reliable ordering.
But a method in MySQL is to use # variables like this.
SELECT
#male = #male + male as male
, #female = #female + female as female
, ordering_column
FROM (
<< your existing query here >>
)
CROSS JOIN ( SELECT #male := 0 m, #female := 0 f ) vars
ORDER BY
ordering_column