Challenge: Indexing for Faster Searches
You have learned how indexes can significantly improve query performance by allowing the database to quickly locate rows that match certain conditions. In this challenge, you will apply your knowledge to a practical scenario involving the books table. Imagine you are tasked with optimizing a search query that retrieves books by genre and published_year. You will need to analyze the query, consider how the EXPLAIN output would look without an index, and then create an index that improves the search efficiency.
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Analyze the EXPLAIN output for the provided search query on the books table. Identify which columns are being filtered and determine what index could improve the performance of this query. Create the necessary index to optimize searches that filter by both genre and published_year.
- Identify the columns used in the WHERE clause of the query.
- Create an index on the relevant columns in the
bookstable to optimize the search. - Ensure the index is created using the correct syntax and references the appropriate columns.
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What would the EXPLAIN output look like for the query without an index?
How do I create an index to optimize searches by genre and published_year?
Can you explain why indexing both columns together is better than indexing them separately?
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You have learned how indexes can significantly improve query performance by allowing the database to quickly locate rows that match certain conditions. In this challenge, you will apply your knowledge to a practical scenario involving the books table. Imagine you are tasked with optimizing a search query that retrieves books by genre and published_year. You will need to analyze the query, consider how the EXPLAIN output would look without an index, and then create an index that improves the search efficiency.
Swipe to start coding
Analyze the EXPLAIN output for the provided search query on the books table. Identify which columns are being filtered and determine what index could improve the performance of this query. Create the necessary index to optimize searches that filter by both genre and published_year.
- Identify the columns used in the WHERE clause of the query.
- Create an index on the relevant columns in the
bookstable to optimize the search. - Ensure the index is created using the correct syntax and references the appropriate columns.
Рішення
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