Thank you for asking for clarifications. I was definitively unclear.

What I would like is a comma delimited string of order IDs that share the same product.

So when Order 1 contains product 100, and Order 2 also contains product 100,

I would like to have a table of 2 columns ( productID, string of Order IDs with that product IDs)

so it will be

Product ID Relevant List of Order IDs

_________________________________________________________

100 1, 2

500 10, 20, 30

Thanks!