Hi craftzombie,

I think I found the error. It should be products_price_w i.s.o. product_price_w. If I remember well, someone posted p.product_price_w in this thread, and I used that because I did not know anything about the contribution and assumed it was the correct column name. But of course it's possible I did not read it correctly.

Anyway, now I checked it, and it appears it should be products_price_w (and p.products_price_w in the query).