A data analyst wants to improve the performance of the query that is currently running. The query is currently using a SELECT*. Which of the following are the best ways to speed up the query? (Choose

The correct answer is B. Creating an index for individual columns E. Changing the query to use individual columns. Creating an index for individual columns improves query performance by enabling faster lookups on those columns. Changing the query to select only the needed individual columns reduces the data processed, speeding up the query.

Data Concepts and Environments

Question

A data analyst wants to improve the performance of the query that is currently running. The query is currently using a SELECT*. Which of the following are the best ways to speed up the query? (Choose two.)

Options

APartitioning the table
BCreating an index for individual columns
CCreating an index for all columns
DCreating a stored procedure
EChanging the query to use individual columns
FCreating table statistics

How the community answered

(17 responses)

B
94% (16)
F
6% (1)

Explanation

Creating an index for individual columns improves query performance by enabling faster lookups on those columns. Changing the query to select only the needed individual columns reduces the data processed, speeding up the query.

Topics

#Query Optimization#Database Performance#Indexing#SQL Best Practices

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