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Question 58 - ARA-C01 discussion

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How can an Architect enable optimal clustering to enhance performance for different access paths on a given table?

A.
Create multiple clustering keys for a table.
Answers
A.
Create multiple clustering keys for a table.
B.
Create multiple materialized views with different cluster keys.
Answers
B.
Create multiple materialized views with different cluster keys.
C.
Create super projections that will automatically create clustering.
Answers
C.
Create super projections that will automatically create clustering.
D.
Create a clustering key that contains all columns used in the access paths.
Answers
D.
Create a clustering key that contains all columns used in the access paths.
Suggested answer: B

Explanation:

According to the SnowPro Advanced: Architect documents and learning resources, the best way to enable optimal clustering to enhance performance for different access paths on a given table is to create multiple materialized views with different cluster keys. A materialized view is a pre-computed result set that is derived from a query on one or more base tables. A materialized view can be clustered by specifying a clustering key, which is a subset of columns or expressions that determines how the data in the materialized view is co-located in micro-partitions. By creating multiple materialized views with different cluster keys, an Architect can optimize the performance of queries that use different access paths on the same base table. For example, if a base table has columns A, B, C, and D, and there are queries that filter on A and B, or on C and D, or on A and C, the Architect can create three materialized views, each with a different cluster key: (A, B), (C, D), and (A, C). This way, each query can leverage the optimal clustering of the corresponding materialized view and achieve faster scan efficiency and better compression.

Snowflake Documentation: Materialized Views

Snowflake Learning: Materialized Views

https://www.snowflake.com/blog/using-materialized-views-to-solve-multi-clustering-performance-problems/

asked 23/09/2024
Maurice Nicholson
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