I am trying to build complex mysql query but its returning wrong results…
SELECT
b.name AS batch_name,
b.id AS batch_id,
COUNT(DISTINCT s.id)
AS total_students,
COALESCE( SUM(s.open_bal), 0 )
AS open_balance,
SUM( COALESCE(i.reg_fee, 0)
+ COALESCE(i.tut_fee, 0)
+ COALESCE(i.other_fee, 0)
) AS gross_fee,
SUM( COALESCE(i.discount, 0) )
AS discount,
COALESCE( SUM(s.open_bal), 0 )
+ SUM( COALESCE(i.reg_fee, 0)
+ COALESCE(i.tut_fee, 0)
+ COALESCE(i.other_fee, 0)
)
- SUM( COALESCE(i.discount, 0) )
AS net_payable,
SUM( COALESCE(r.reg_fee, 0)
+ COALESCE(r.tut_fee, 0)
+ COALESCE(r.other_fee, 0)
) AS net_recieved,
( COALESCE( SUM(s.open_bal), 0 )
+ SUM( COALESCE(i.reg_fee, 0)
+ COALESCE(i.tut_fee, 0)
+ COALESCE(i.other_fee, 0)
)
- SUM( COALESCE(i.discount, 0) )
)
- ( SUM( COALESCE(r.reg_fee, 0)
+ COALESCE(r.tut_fee, 0)
+ COALESCE(r.other_fee, 0)
)
)
AS balance_due
FROM batches b
LEFT JOIN students s ON s.batch = b.id
LEFT JOIN invoices i ON i.student_id = s.id
LEFT JOIN recipts r ON r.student_id = s.id
WHERE s.inactive = 0
GROUP BY b.name, b.id;
Returns following results…
| batch_name | total_students | open_bal | gross_fee | discount | net_payable | net_recieved | due_balance |
+------------+-----------------+----------+-----------+----------+-------------+--------------+-------------+
| MS | 6 | 10000 | 0 | 0 | 10000 | 101000 | -91000 |
+------------+-----------------+----------+-----------+----------+-------------+--------------+-------------+
batches table
| id | name |
+-----+------+
| 9 | Ms |
+-----+------+
Students table
| id | open_bal | batch | inactive |
+-----+----------+-------+----------+
| 44 | -16000 | 9 | 0 |
+-----+----------+-------+----------+
| 182 | 9000 | 9 | 0 |
+-----+----------+-------+----------+
| 184 | -36000 | 9 | 0 |
+-----+----------+-------+----------+
| 185 | 19000 | 9 | 0 |
+-----+----------+-------+----------+
| 186 | 9000 | 9 | 0 |
+-----+----------+-------+----------+
| 187 | 4000 | 9 | 0 |
+-----+----------+-------+----------+
Invoices Table
| id | student_id | reg_fee | tut_fee | other_fee | net_payable | discount |
+------+------------+---------+---------+-----------+-------------+----------+
| | | | | | | |
+------+------------+---------+---------+-----------+-------------+----------+
No invoices are available for above students id.
Recipts table
| id | student_id | reg_fee | tut_fee | other_fee | status |
+------+------------+---------+---------+-----------+------------+
| 8 | 44 | 0 | 0 | 1500 | confirmed |
+------+------------+---------+---------+-----------+------------+
| 277 | 44 | 0 | 50000 | 0 | confirmed |
+------+------------+---------+---------+-----------+------------+
| 26 | 182 | 0 | 0 | 1500 | confirmed |
+------+------------+---------+---------+-----------+------------+
| 424 | 182 | 0 | 15000 | 0 | confirmed |
+------+------------+---------+---------+-----------+------------+
| 468 | 182 | 0 | 15000 | 0 | confirmed |
+------+------------+---------+---------+-----------+------------+
| 36 | 185 | 0 | 0 | 1500 | confirmed |
+------+------------+---------+---------+-----------+------------+
| 697 | 185 | 0 | 15000 | 0 | confirmed |
+------+------------+---------+---------+-----------+------------+
| 66 | 187 | 0 | 0 | 1500 | confirmed |
+------+------------+---------+---------+-----------+------------+
Expected results using above sql query and tables…
| batch_name | total_students | open_bal | gross_fee | discount | net_payable | net_recieved | due_balance |
+------------+-----------------+----------+-----------+----------+-------------+--------------+-------------+
| MS | 6 | -11000 | 0 | 0 | 10000 | 101000 | -112000 |
+------------+-----------------+----------+-----------+----------+-------------+--------------+-------------+
I have got the solution, i was joining lots of queries together and that’s by some results are doubling. thanks.