sandugood commented on code in PR #22134:
URL: https://github.com/apache/datafusion/pull/22134#discussion_r3240388643
##########
docs/source/user-guide/sql/window_functions.md:
##########
@@ -400,20 +400,21 @@ lag(expression, offset, default)
#### Example
```sql
--- Example usage of the lag window function:
-SELECT employee_id,
+-- Example usage of lag window function that takes an expression as its
default parameter:
+SELECT
+ employee_id,
salary,
- lag(salary, 1, 0) OVER (ORDER BY employee_id) AS prev_salary
Review Comment:
Combined them both in a single example query
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