asdf2014 commented on code in PR #17293:
URL: https://github.com/apache/druid/pull/17293#discussion_r1794476827
##########
docs/querying/sql-functions.md:
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@@ -1664,11 +3266,32 @@ For more information, see [UNNEST](./sql.md#unnest).
## UPPER
-`UPPER(expr)`
+Returns the expression in uppercase.
-**Function type:** [Scalar, string](sql-scalar.md#string-functions)
+* **Syntax:** `UPPER(expr)`
+* **Function type:** Scalar, string
-Returns the expression in uppercase.
+<details><summary>Example</summary>
+
+The following example converts the `OriginCityName` column from the
`flight-carriers` datasource to uppercase.
+
+```sql
+SELECT
+ "OriginCityName" AS "origin_city",
+ UPPER("OriginCityName") AS "uppercase"
+FROM "flight-carriers"
+LIMIT 1
+```
+
+Returns the following:
+
+| `origin_city` | `uppercase` |
+| -- | -- |
+`San Juan, PR` | `SAN JUAN, PR` |
Review Comment:
```suggestion
| `San Juan, PR` | `SAN JUAN, PR` |
```
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