beyond1920 commented on a change in pull request #18414:
URL: https://github.com/apache/flink/pull/18414#discussion_r790381192
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File path: docs/content.zh/docs/dev/table/sql/queries/window-agg.md
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@@ -199,7 +199,8 @@ The following shows a cascading window aggregation where
the first window aggreg
```sql
-- tumbling 5 minutes for each supplier_id
CREATE VIEW window1 AS
-SELECT window_start, window_end, window_time as rowtime, SUM(price) as
partial_price
+-- under the Cascading Window Aggregation to avoid field ambiguity
window_start and window_end need to be renamed
Review comment:
```suggestion
-- Note: The window start and window end fields of inner Window TVF are
optional in the select clause. However, if they appear in the clause, they need
to be aliased to prevent name conflicting with the window start and window end
of the outer Window TVF.
```
WDTY?
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