GuoPhilipse commented on a change in pull request #29056:
URL: https://github.com/apache/spark/pull/29056#discussion_r455220561
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File path: docs/sql-ref-syntax-qry-select-groupby.md
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@@ -38,6 +38,8 @@ GROUP BY GROUPING SETS (grouping_set [ , ...])
While aggregate functions are defined as
```sql
aggregate_name ( [ DISTINCT ] expression [ , ... ] ) [ FILTER ( WHERE
boolean_expression ) ]
+
+[ FIRST | LAST ] ( expression [ IGNORE NULLS ] ) ]
Review comment:
I just tried, not working ,even aggregate functions do not support
`FILTER` in V2.4.5, i will test for other version tomorrow.
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