So these next two topics we’re going to go through them pretty quickly. If you’re curious, if you’re inheriting a lot of legacy SQL scripts, you actually have to explicitly flatten your arrays. So imagine again back to the first example of the raspberry strawberries with the commas. It doesn't necessarily, in legacy SQL, pivot those into those three conceptually separate rows that are a part of that one row. So you have to actually explicitly flatten them. But within standard SQL on the right, flattening happens implicitly, and then you need to actually access those array elements with a CROSS JOIN + UNNEST. If you see some of these functions on the left like WITHIN RECORD or doing the nesting of those records in an array, that is the old legacy SQL syntax. In the new standards you're going to be using array operators. You're going create those nested rows by doing something like creating an array through an array aggregation. Or operating over the array using ARRAY_LENGTH to get the number of items in a shopping cart or something like that. So this is more of a heads up in case you see something like this come across your path.