What are best practices for naming conventions in database columns to avoid errors in SQL queries?

When naming database columns, it is important to use clear, descriptive names that accurately represent the data they hold. Avoid using special characters or spaces in column names, as this can lead to errors in SQL queries. Instead, use underscores to separate words in column names for readability and consistency.

// Example of using clear, descriptive column names with underscores
$first_name = $row['first_name'];
$last_name = $row['last_name'];
$email_address = $row['email_address'];