docs: add partitioned ClickBench SQL example

[ByteBaker]

Continuation of #23315

It would also help (maybe as a follow on PR) to give an explicit example of the SQL required for hits_partitioned

Originally posted by @alamb in #23315 (comment)

[codecov-commenter]

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[alamb]

Thank you @ByteBaker

[alamb]

I tested this locally and it works great

DataFusion CLI v54.0.0
> CREATE EXTERNAL TABLE hits_raw
STORED AS PARQUET
LOCATION 'benchmarks/data/hits_partitioned'
OPTIONS ('binary_as_string' 'true');
0 row(s) fetched.
Elapsed 0.060 seconds.

> CREATE VIEW hits AS
SELECT * EXCEPT ("EventDate"),
       CAST(CAST("EventDate" AS INTEGER) AS DATE) AS "EventDate"
FROM hits_raw;
0 row(s) fetched.
Elapsed 0.010 seconds.

> SELECT COUNT(*) FROM hits WHERE "AdvEngineID" <> 0;

+----------+
| count(*) |
+----------+
| 630500   |
+----------+
1 row(s) fetched.
Elapsed 0.030 seconds.