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Find Customers Who Haven’t Placed Any Orders
Find Customers Who Haven’t Placed Any Orders
customers Table:
Order Table:
Query Explanation:
● SELECT * FROM Customers – Retrieves all the customer records.
● WHERE CustomerID NOT IN (SELECT CustomerID FROM Orders) – Filters the list to exclude those customers who have a matching entry in the Orders table, effectively showing only those who haven’t placed any orders.
SQL Query:
USE SalesInventoryDB;
select *from customers
where CustomerID not in (select orders.CustomerID from orders);
Output:
