What are some common SQL mistakes to avoid?

What are some common SQL mistakes to avoid?

Some common SQL mistakes include forgetting to use WHERE clauses, using SELECT * in production, and not indexing properly.

Can you explain why using SELECT * is a bad practice?

Using SELECT * can lead to performance issues, as it retrieves all columns, which may not be necessary and can slow down queries.

What about forgetting to use WHERE clauses?

Forgetting WHERE clauses can result in updating or deleting all records in a table, which can be catastrophic.

How can I avoid these mistakes in my SQL queries?

To avoid these mistakes, always review your queries, use specific column names, and test your queries in a safe environment.