CREATE TABLE Customers (customer_first_name VARCHAR, customer_last_name VARCHAR, phone_number VARCHAR, customer_id VARCHAR)
CREATE TABLE Accounts (customer_id VARCHAR)

Show the unique first names, last names, and phone numbers for all customers with any account.
SELECT DISTINCT T1.customer_first_name, T1.customer_last_name, T1.phone_number FROM Customers AS T1 JOIN Accounts AS T2 ON T1.customer_id = T2.customer_id
SELECT DISTINCT "T1"."customer_first_name", "T1"."customer_last_name", "T1"."phone_number" FROM "Customers" AS "T1" JOIN "Accounts" AS "T2" ON "T1"."customer_id" = "T2"."customer_id"