What are some best practices for writing SQL queries?
Some best practices include using proper indexing, avoiding SELECT *, and writing clear and concise queries.
Can you explain why using SELECT * is not recommended?
Using SELECT * can lead to performance issues, as it retrieves all columns, even those not needed, increasing data transfer.
What about using joins? Any tips?
When using joins, ensure you join on indexed columns and limit the number of rows returned to improve performance.
How can I optimize my SQL queries further?
You can optimize by analyzing query execution plans, using subqueries wisely, and avoiding unnecessary calculations in SELECT.
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