sum from both mysql table columns

Question

I have two mysql tables:

table: loan
--------------------------------------------------------
 id | advance_id | loan_amount | deposit_amount | date
------------         


        

Answer 1

you can rewrite your query as

SELECT 
  a.advance_id,
  SUM(a.advance_amount) AS adv_amount,
  a.purpose,
  a.date,
  l.loan_amount 
FROM
  advance AS a 
  INNER JOIN 
  (
    SELECT advance_id,SUM(deposit_amount) AS loan_amount
    FROM loan
    GROUP BY advance_id
    HAVING SUM(loan_amount) - SUM(deposit_amount) > 0 
  )  AS l USING(advance_id)
GROUP BY a.advance_id 

DEMO