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Question 1: Write a SELECT statement that returns three columns: EmailAddress, OrderID, and the order total for each customer.
To do this, you can group the result set by the EmailAddress and OrderID columns.
In addition, you must calculate the order total from the columns in the OrderItems table.
Question 2: Write a second SELECT statement that uses the first SELECT statement in its FROM clause.
The main query should return two columns: the customer's email address and the largest order for that customer. To do this, you can group the result set by the EmailAddress column.
You have to execute these queries and show the output of this statement.
Select an appropriate statistical measure to compare consistency of sales. Make the calculations and write a report. In your calculations, include the mean sales for each salesperson.
question 1a candidate key isrequired to be unique.used to represent rows in relationships.a candidate to be the primary
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