ChatGPT is able point out what is needed to be changed in the following complex SQL question This question is from an Microsoft SQL Certification Exam

 You have two tables in a SQL Server database. The first table is named Customers. The second table is named Employees. Your manager requests a list that contains the first name, last name, and phone number of each customer and employee of the company.

You write the following statement (line numbers are included for reference only):  01 CREATE VIEW CustomerPhoneList 02 AS 03 SELECT firstname, lastname, phone 04 FROM HR.Employees 05 INTERSECT 06 SELECT firstname, lastname, phone 07 FROM Sales.Customers You execute the statement. The results include only the records that are exact matches between the Customers table and the Employees table. You need to return all the records from both tables, even if there are duplicates. What should you substitute at line 5?

To return all the records from both tables, you should use a UNION ALL operator instead of INTERSECT at line 5. This will combine the results of the two SELECT statements and return all records, including duplicates.

The revised statement would look like this:

CREATE VIEW CustomerPhoneList AS SELECT firstname, lastname, phone FROM HR.Employees UNION ALL SELECT firstname, lastname, phone FROM Sales.Customers

This view will include all records from the Employees and Customers tables, including any duplicates. You can then query the view to get a list of all the customers and employees and their phone numbers.