Question

I want to write a php script to compare rows from the database and then adds the values together if payment_id are matches. Based on payment_id:

Example:

   +----+------------+-----------+--------+
   | id | payment_id | cheque_id | amount |
   +----+------------+-----------+--------+
   |  1 | 1000       | MB101     | 20     |
   |  2 | 1000       | MB102     | 20     |
   |  3 | 1111       | MB113     | 20     |
   +----+------------+-----------+--------+

Result required

   +------+--------------+----+
   | 1000 |  MB101/MB102 | 40 |
   | 1111 |  MB113       | 20 |
   +------+--------------+----+

Trying to merge cheque column as string. For ‘Amount’ column I know that should be use SUM.

Any suggestions is appreciated,

Thanks

Answer 1

use GROUP BY

select payment_id,group_concat(cheque_id SEPARATOR '/') as cheque_ids,
SUM(amount) as amount
FROM table name
GROUP BY payment_id