ExamGecko
Search Search Login
Home Home / Snowflake / SnowPro Core
Question list
Search
Search
Open VPLUS File
Convert VPLUS to PDF

Related questions

A materialized view should be created when which of the following occurs? (Choose two.)
When would Snowsight automatically detect if a target account is in a different region and enable cross-cloud auto-fulfillment?
A view is defined on a permanent table. A temporary table with the same name is created in the same schema as the referenced table. What will the query from the view return?
A user needs to create a materialized view in the schema MYDB.MYSCHEM
Which Snowflake technique can be used to improve the performance of a query?
What is a key feature of Snowflake architecture?
Which privilege must be granted to a share to allow secure views the ability to reference data in multiple databases?
User-level network policies can be created by which of the following roles? (Select TWO).
Which of the following is a valid source for an external stage when the Snowflake account is located on Microsoft Azure?
Will data cached in a warehouse be lost when the warehouse is resized?

Question 581 - SnowPro Core discussion

Report
Export

A Snowflake user wants to optimize performance for a query that queries only a small number of rows in a table. The rows require significant processing. The data in the table does not change frequently.

What should the user do?

A.

Add a clustering key to the table.

Answers
A.

Add a clustering key to the table.

B.

Add the search optimization service to the table.

Answers
B.

Add the search optimization service to the table.

C.

Create a materialized view based on the query.

Answers
C.

Create a materialized view based on the query.

D.

Enable the query acceleration service for the virtual warehouse.

Answers
D.

Enable the query acceleration service for the virtual warehouse.

Suggested answer: C

Explanation:

In a scenario where a Snowflake user queries only a small number of rows that require significant processing and the data in the table does not change frequently, the most effective way to optimize performance is by creating a materialized view based on the query. Materialized views store the result of the query and can significantly reduce the computation time for queries that are executed frequently over unchanged data.

Why Materialized Views: Materialized views precompute and store the result of the query. This is especially beneficial for queries that require heavy processing. Since the data does not change frequently, the materialized view will not need to be refreshed often, making it an ideal solution for this use case.

Implementation Steps:

To create a materialized view, use the following SQL command:

CREATE MATERIALIZED VIEW my_materialized_view AS SELECT ... FROM my_table WHERE ...;

When the query is run, Snowflake uses the precomputed results from the materialized view, thus skipping the need for recalculating the data and improving query performance.

Show Answer
asked 29/10/2024
Andreas Krieger
34 questions
PreviousPreviousNextNext
User
Your answer:
0 comments
Sorted by

Leave a comment first

ExamGecko

Copyright @2023 ExamGecko | All right reserved

Mail us: [email protected]
About us
Contact us
Twitter X
Facebook
Medium
Convert VPLUS to PDF
Open VPLUS files Easily and Quickly
Privacy Policy
Disclaimer
Terms