从同一行的不同表中选择SELECT SUM和COUNT，PHP和MySql

Question

I got 3 tables, transactions , clubs and clients , a Club can have only one salesman, and each Client can belong to only one Club, the clients make payments in the transactions table.

I'm trying to get a list of all Salesman, how many payments per Club and the total amount of payment per Club on a specific date.

I only get one row, with the first salesman, and the total for everyone, don't know how to get each row with the totals of each individual Salesman. Thank you for your time.

+--------------------------------------------+
|                transactions                |
+--------------------------------------------+
| id_transaction | date | amount | client_id |
+----------------+------+--------+-----------+

+------------------------------+
|            clients           |
+------------------------------+
| id_client | name | club_name |
+-----------+------+-----------+

+-----------------------------------+
|               clubs               |
+-----------------------------------+
| id_club | name_club | name_seller |
+---------+-----------+-------------+

SELECT 
   transactions.amount,
   clients.id_client,
   clubs.club_name,
   club.name_seller,
   SUM(transactions.amount) AS sum_amount,
   COUNT(transactions.amount) AS count_amount,
   club.name_seller AS salesman
FROM transactions, members, clubs
WHERE transactions.date = '$date' 
AND clients.id_client = transactions.client_id 
AND client.club_name = clubs.name_club 


 <th>Salesman</th>
 <th>Club Name</th>
 <th>Number of Transactions</th>
 <th>Total amount</th>   

 $output.='<td>'.$row['salesman'].'</td>';
 $output.='<td>'.$row['club_name'].'</td>';
 $output.='<td>'.$row['COUNT(amount)'].'</td>';
 $output.='<td>'.$row['SUM(amount)'].'</td>';

This is what I'm trying, Example:

Salesman - Club name - Number of Transactions - Total amount
Bill - TennisClub - 5 - 5000 Bill - Golf Club - 7 - 7000 Joe - Pool Cub - 2 - 2000

Answer 1

You have to use Group By statement in your query ( If you want salesman based, You can put salesman id )

I think, you have changed the table structure names before posting the question. So, I can't understood the Primary & Foreign key's.