Compute 2 subqueries then group by date - mysql

Question

i have this Table

i want to do subqueries first then add them together grouped by date

Expected Result should be like this:

am running this query

(
SELECT DATE_FORMAT(dd1.modified_datetime,'%Y-%m-%d') as date, (v1+v2) as value FROM
    (SELECT modified_datetime, Sum(data->"$.amount") as v1
        FROM transactions
        GROUP BY modified_datetime) as dd1 ,            
    (SELECT modified_datetime, MAX(data->"$.amount") as v2
        FROM transactions
        GROUP BY modified_datetime) as dd2

    GROUP BY dd1.modified_datetime, value
)

and getting this result

Appreciated your help

Answer 1

Use JOIN between subqueries and every next one:

(SELECT modified_datetime, Sum(data->"$.amount") as v1
    FROM transactions
    GROUP BY modified_datetime) as dd1 JOIN
(SELECT modified_datetime, MAX(data->"$.amount") as v2
    FROM transactions
    GROUP BY modified_datetime) as dd2 ON dd1.modified_datetime=dd2.modified_datetime

Answer 2

If I followed you correctly, you can use union all and aggregation:

select date_format(dt, '%Y-%m-%d') dt_day, sum(amount) value
from (
    select modified_datetime dt, data ->> '$.amount' amount from transactions
    union all 
    select created_datetime, data ->> '$.amount' from transactions
) t
group by dt_day
order by dt_day