List the number of customers that did not have any payment history.
CREATE TABLE Customers (customer_id VARCHAR); CREATE TABLE Customer_Payments (customer_id VARCHAR)
SELECT COUNT(*) FROM Customers WHERE NOT customer_id IN (SELECT customer_id FROM Customer_Payments)
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE Customers (customer_id VARCHAR); CREATE TABLE Customer_Payments (customer_id VARCHAR) Question: List the number of customers that did not have any payment history. [/INST] SELECT COUNT(*) FROM Customers WHERE NOT customer_id IN (SELECT customer_id FROM Customer_Payments) </s>