Combining Results using Set Operations
Results sets are created by issuing queries. To combine them using logical
operations, go to the "Combine results" box, and choose two sets consisting
Next choose a logical operation:
Finally, click the "Combine" button.
- "and" does intersection: the result will be those classes that appear in
- "or" does union: the two sets will be added together, with duplicates removed
- "but not" does minus: starting with the first set, if any of its classes
match those in the second set, those classes are removed.