cloud-fan commented on a change in pull request #35079:
URL: https://github.com/apache/spark/pull/35079#discussion_r777963872
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File path: docs/sql-ref-syntax-qry-select-window.md
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@@ -39,17 +39,21 @@ window_function OVER
* Ranking Functions
**Syntax:** `RANK | DENSE_RANK | PERCENT_RANK | NTILE | ROW_NUMBER`
+
+ Note: Cannot append `[ { IGNORE | RESPECT } NULLS ]`
* Analytic Functions
- **Syntax:** `CUME_DIST | LAG | LEAD`
+ **Syntax:** `[ CUME_DIST | [ LAG | LEAD | NTH_VALUE | FIRST_VALUE |
LAST_VALUE ] [ { IGNORE | RESPECT } NULLS ] ]`
* Aggregate Functions
**Syntax:** `MAX | MIN | COUNT | SUM | AVG | ...`
Please refer to the [Built-in Aggregation
Functions](sql-ref-functions-builtin.html#aggregate-functions) document for a
complete list of Spark aggregate functions.
+ Note: Cannot append `[ { IGNORE | RESPECT } NULLS ]`
+
* **window_frame**
Review comment:
Can we add a new section for `{ IGNORE | RESPECT } NULLS`? We need to
explain its semantic, the default value, and can apply to which functions.
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