jayzhan211 commented on code in PR #8849:
URL: https://github.com/apache/arrow-datafusion/pull/8849#discussion_r1454378176


##########
benchmarks/queries/clickbench/README.md:
##########
@@ -28,6 +28,23 @@ SELECT
 FROM hits;
 ```
 
+### Q1
+Query to test distinct count for String. Three of them are all small string 
(length either 1 or 2).
+
+```sql
+SELECT 
+    COUNT(DISTINCT "HitColor"), COUNT(DISTINCT "BrowserCountry"), 
COUNT(DISTINCT "BrowserLanguage")
+FROM hits;
+```
+
+### Q2
+Query to test distinct count for String. "URL" has length greater than 8

Review Comment:
   `SearchPhrase` contains long string 



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