I haved tried to build a shared query, that could find all products, which isn't added to any group. Should have been a 5 min task, but no :-| Hope you have the solution for me or can point me in the right direction.
Following is not working:
1. 
+ all combinations of <, >, <=, >= etc. but no luck.
2. 
It's all the products marked with yellow I want to find:
Br. Michael Knudsen
