Hi!
My data is set up as below:
Source1
| Site | Class | Name |
| SITE A | CLASS A | PERSON A |
| SITE A | CLASS B | PERSON B |
| SITE B | CLASS A | PERSON C |
| SITE B | CLASS B | PERSON D |
Source2
| Site | Class |
| SITE A | CLASS A |
| SITE A | CLASS B |
| SITE B | CLASS A |
I am trying to create a gallery that shows me a list from Source1 where a Class is NOT found in within its Site in Source2. In the example above it should return the data which includes PERSON D, since Source2 does not contain a SITE B CLASS B.
Any help would be appreciated!