What are some tips for optimizing SQL queries?
To optimize SQL queries, consider using indexes, avoiding SELECT *, and analyzing query execution plans.
Can you explain how indexes improve query performance?
Indexes speed up data retrieval by allowing the database to find rows faster without scanning the entire table.
What are the common mistakes to avoid when writing SQL queries?
Common mistakes include using too many joins, not using indexes, and failing to filter results properly.
How can I analyze the execution plan of a query?
You can use the EXPLAIN statement before your query to see how the database plans to execute it.
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