Generate a JDBC query to retrieve a customer's phone number.
customer_id = '74ADB'
SELECT customer_phone_number FROM customer_data WHERE customer_id = '74ADB';
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Generate a JDBC query to retrieve a customer's phone number.

### Response:
SELECT customer_phone_number FROM customer_data WHERE customer_id = '74ADB';