Andy Brownsword takes a look at one quality of life improvement in SQL Server 2022:
Window functions allow us to perform a function across a set of rows in a result set, rather than how we might typically group them. In SQL Server 2022 we have a new clause available for our queries which can help tidy up how these are defined.
You can do some neat things with the WINDOW clause, including partial matches. For example, you could define a window r1 AS (PARTITION BY x.MyColumn) and then another window r2 AS (r1 ORDER BY x.SomeOtherColumn). I don’t think there are a huge number of scenarios in which this is helpful, especially because performance typically depends upon minimizing the unique number of window functions in your query, but every once in a while it’s a really neat thing.