19.2.2 - Query Execution Plan Analysis
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Practice Questions
Test your understanding with targeted questions
What does the EXPLAIN command do?
💡 Hint: Think of it as a planning phase for the database.
Define a Table Scan.
💡 Hint: Think about searching for a needle in a haystack.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What information does the EXPLAIN command provide?
💡 Hint: It's about the plan, not the execution.
True or False: EXPLAIN ANALYZE executes the query and provides runtime statistics.
💡 Hint: It's more hands-on than just looking at the plan.
1 more question available
Challenge Problems
Push your limits with advanced challenges
Given a slow-running SQL query, analyze the provided execution plan and identify at least three potential bottlenecks.
💡 Hint: Consider where inefficiencies might occur based on the plan's structure.
Design an optimized version of a SQL query that previously resulted in a table scan, incorporating indexing where necessary.
💡 Hint: Focus on how to reduce the data load from the beginning.
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