KenanAdel commented on code in PR #28456:
URL: https://github.com/apache/flink/pull/28456#discussion_r3416264140
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docs/data/sql_functions.yml:
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@@ -1611,6 +1611,14 @@ aggregate:
`(NUMERIC: INTEGER_NUMERIC, FLOAT, DOUBLE, DECIMAL)`
Returns a `DOUBLE` if percentage is numeric, or an `ARRAY<DOUBLE>` if
percentage is an array. `NULL` if percentage is an empty array.
+ - sql: SINGLE_VALUE(expression)
+ description: |
+ Returns a single value of the expression within a group.
Review Comment:
Thanks for the suggestion, @raminqaf! I agree that adding an example is very
helpful for better understanding.
I will add the `SINGLE_VALUE` entry to the Chinese documentation and include
the following example for the function in both the English and Chinese versions:
```yaml
examples: |
SELECT SINGLE_VALUE(id) FROM T;
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