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List all orders, showing order number, customer name and credit limit of a customer.Orders Table:Order_Number, Customer_Number, Product_AmountCustomers Table:Customer_Number, Customer_Name, Credit_LimitWhich of the below query satisfy the above question:A. Select Order_Number, Customer_Name, Credit_Limitfrom Customers left join Orderswhere Customer_Number = Customer_NumberB. Select Order_Number, Customer_Name, Credit_Limitfrom Customers INNER JOIN OrdersON Customers.Customer_Number = Orders.Customer_Number;

Question

List all orders, showing order number, customer name and credit limit of a customer.Orders Table:Order_Number, Customer_Number, Product_AmountCustomers Table:Customer_Number, Customer_Name, Credit_LimitWhich of the below query satisfy the above question:A. Select Order_Number, Customer_Name, Credit_Limitfrom Customers left join Orderswhere Customer_Number = Customer_NumberB. Select Order_Number, Customer_Name, Credit_Limitfrom Customers INNER JOIN OrdersON Customers.Customer_Number = Orders.Customer_Number;

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Solution

The correct query that satisfies the question is option B.

Here's why:

Option A is incorrect because it uses a "left join" which would return all the records from the Customers table and the matched records from the Orders table. If there is no match, the result is NULL on the Orders side. However, the question asks for all orders, not all customers, so a left join would not be appropriate.

Option B is correct because it uses an "inner join". This type of join returns records that have matching values in both tables, which is what the question is asking for. It will list all orders (from the Orders table) along with the customer name and credit limit (from the Customers table) where the customer number matches in both tables.

Also, in option A, the WHERE clause is incorrect. It should be "Customers.Customer_Number = Orders.Customer_Number". In the given query, it's comparing the same column to itself, which doesn't make sense.

So, the correct query is:

Select Order_Number, Customer_Name, Credit_Limit
from Customers 
INNER JOIN Orders
ON Customers.Customer_Number = Orders.Customer_Number;

This problem has been solved

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