As an aside, I've gone to 'Ideas' and done a search for 'companion plants' or 'companion planting' and it brings up any articles or ideas that pertain to the topic. Of course that's not as easily done as having it connected in the database, but it is helpful. Trouble is you have to read through everything if you are looking for a specific plant.
I've found the Garden Tour articles to be particularly helpful because the plants are shown in full views in members' gardens.
Still time consuming, though.