Merge pull request #4164 from soerenwolfers/patch-39

Update window_functions.md

docs/sql/functions/window_functions.md

@@ -210,7 +210,8 @@ Window functions cannot access values outside of the partition containing the ro
 
 Ordering is also optional, but without it the results of [general-purpose window functions](#general-purpose-window-functions) and [order-sensitive aggregate functions]({% link docs/sql/functions/aggregates.md %}#order-by-clause-in-aggregate-functions), and the order of [framing](#framing) are not well-defined.
 Each partition is ordered using the same ordering clause.
-It is not currently possible to specify the aggregation order of [order-sensitive aggregate functions]({% link docs/sql/functions/aggregates.md %}#order-by-clause-in-aggregate-functions) (e.g., `array_agg(x ORDER BY y)`) other than by the order in the `OVER` specification.
+
+> It is not currently possible to specify the aggregation order of window functions other than via the order in the `OVER` specification. In particular, it is not possible to use an aggregation order different from the frame order, e.g., `last_value(x ORDER BY y) OVER (ORDER BY z)`.
 
 Here is a table of power generation data, available as a CSV file ([`power-plant-generation-history.csv`](/data/power-plant-generation-history.csv)). To load the data, run: