Write an UPDATE statement on the customers table to SET the years_old column to 42 for any customer with a last_name of Hall.

To update the years_old column for customers with the last name "Hall" in the customers table, you would use the SQL UPDATE statement. Here’s how you can write the query:

UPDATE customers
SET years_old = 42
WHERE last_name = 'Hall';

Explanation:

1. UPDATE Clause: This indicates which table you want to update, in this case, customers.
2. SET Clause: This specifies the column (years_old) you want to change and the new value (42).
3. WHERE Clause: This filters the records to update only those where the last_name is 'Hall'.

Final Result

The SQL command above will successfully set the years_old column to 42 for all customers whose last name is 'Hall'.