Question

I have a big database which is already filled and contains order data. I have a table named order which contains all the orders.

I need to make a list of all the ordered products which are the same. It’s something like this:

My data in the database

id = 1 | orderid = 1 | product = A 
id = 2 | orderid = 1 | product = A 
id = 3 | orderid = 1 | product = B 
id = 4 | orderid = 1 | product = B
id = 5 | orderid = 1 | product = B 
id = 6 | orderid = 2 | product = A 

In short:

• order 1 has 2 product A and 3 product B
• order 2 has 1 product A and 2 product B and 4 product C
• order 3 has 3 product A and 3 product C

I would like to make a summary:

product A ordered 6 times
product B ordered 5 times
product C ordered 7 times

I can’t find a way to iterate through the products which are ordered one by one. How can I count this or group them. I can’t add an extra table because the database is not under my supervision.

Answer 1

You can do this with one query to your DB. In MySql:

SELECT product, COUNT(*) as count FROM test GROUP BY product

It returns two columns: first – product name, second – count.