Let's say I have the following table (keep in mind that this table will have 10000+ rows):
id total date
1 5 2015-05-16
2 8 2015-05-17
3 4 2015-05-18
4 9 2015-05-19
5 3 2015-05-20
I want the query to give the following result:
1
date => 2015-05-16
total => 5
2
date => 2015-05-17
total => 13
3
date => 2015-05-18
total => 17
4
date => 2015-05-19
total => 26
5
date => 2015-05-20
total -> 29
I can't think of any query that would do this right now, that's why I am not providing any code that I have tried.
Any thoughts? I am not sure if this is possible only with mysql, maybe I have to use and php.
This could be done using user defined variable in mysql and then get the running total as
select
id,
total,
date
date from
(
select
id,
@tot:= @tot+total as total,
date from my_table,(select @tot:=0)x
order by date
)x
You can do this -
SELECT
a.id,
a.date,
(SELECT SUM(b.total) FROM your_table WHERE b.date <= a.date) as new_total
FROM your_table a, your_table b
ORDER BY a.date ASC
This should do it:
select id, (select sum(total) from table a where a.date <= b.date) from table b