What are some best practices for writing SQL queries?
An example of an AI chatbot conversation about SQL best practices for writing efficient queries.
What are some best practices for writing SQL queries?
Some best practices include using proper indexing, avoiding SELECT *, and writing clear JOIN conditions.
Can you explain why using SELECT * is not recommended?
Using SELECT * retrieves all columns, which can lead to performance issues and unnecessary data transfer.
What about indexing? How does it improve query performance?
Indexing helps speed up data retrieval by allowing the database to find rows faster, reducing the amount of data scanned.
Are there any specific SQL functions I should avoid?
Yes, avoid using functions in WHERE clauses as they can prevent the use of indexes, leading to slower queries.
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