Snowflake SnowPro Certification Practice Test

What can happen if a table is small in size regarding Clustering Keys?

1. They will enhance performance

2. They may have no significant impact

3. They are always required

4. They can slow down processes

The correct answer is: They may have no significant impact

The answer indicating that clustering keys may have no significant impact on small tables is correct because clustering keys are designed to optimize performance for larger datasets by organizing data in a way that reduces the amount of data scanned during query execution. For smaller tables, the amount of data is limited, and the execution of queries can often be efficient enough without the need for additional organization. Since the data volume is small, the benefits of clustering—such as reducing the amount of data that must be scanned or improving the efficiency of certain types of queries—might not outweigh the overhead incurred from implementing clustering keys. As a result, using clustering keys on small tables can introduce unnecessary complexity without providing a noticeable advantage in performance. Hence, while clustering keys can provide substantial benefits for larger data sets, their impact can be minimal or negligible when the data set is small.