Good! To sum up this section, let's learn about one more operator:
ANY. Take a look:
WHERE Trip.Price < ANY (
WHERE HikingTrip.MountainID = 1
In the above example, we want to find trips to the cities that are cheaper than any hiking trip to the mountain with ID 1 (Mont Blanc, just to let you know). There are two hiking trips to Mont Blanc: one that costs 1000 and one that costs 300. If we find a city trip that is cheaper than either of these hiking trips, we will show it in the result.
Again, other logical operator combinations are possible:
<= ANY, or