Write the following SQL Statements: Write a SELECT statement that returns one row for each customer that has orders with these columns: The email_address from the Customers table A count of the number of orders The total amount for each order (Hint: First, subtract the discount amount from the price. Then, multiply by the quantity.) Return only those rows where the customer has more than 1 order. Sort the result set in descending sequence by the sum of the line item amounts. Write a SELECT statement that answers this question: What is the total amount ordered for each product? Return these columns: The product name from the Products table The total amount for each product in the Order_Items (Hint: You can calculate the total amount by subtracting the discount amount from the item price and then multiplying it by the quantity) Use the ROLLUP operator to include a row that gives the grand total. Write a SELECT statement that answers this question: Which customers have ordered more than one product? Return these columns: The email address from the Customers table The count of distinct products from the customer’s orders Write a SELECT statement that returns the same result set as this SELECT statement, but don’t use a join. Instead, use a subquery in a WHERE clause that uses the IN keyword. SELECT DISTINCT category_name FROM categories c JOIN products p ON c.category_id = p.category_id ORDER BY category_name Write a SELECT statement that answers this question: Which products have a list price that’s greater than the average list price for all products? Return the product_name and list_price columns for each product. Sort the results by the list_price column in descending sequence. Write a SELECT statement that returns the category_name column from the Categories table. Return one row for each category that has never been assigned to any product in the Products table. To do that, use a subquery introduced with the NOT EXISTS operator. Write a SELECT statement that returns the name and discount percent of each product that has a unique discount percent. In other words, don’t include products that have the same discount percent as another product. Sort the results by the product_name column. Use a correlated subquery to return one row per customer, representing the customer’s oldest order (the one with the earliest date). Each row should include these three columns: email_address, order_id, and order_date.

Write the following SQL Statements: Write a SELECT statement that returns one row for each customer that has orders with these columns: The email_address from the Customers table A count of the number of orders The total amount for each order (Hint: First, subtract the discount amount from the price. Then, multiply by the quantity.) Return only those rows where the customer has more than 1 order. Sort the result set in descending sequence by the sum of the line item amounts. Write a SELECT statement that answers this question: What is the total amount ordered for each product? Return these columns: The product name from the Products table The total amount for each product in the Order_Items (Hint: You can calculate the total amount by subtracting the discount amount from the item price and then multiplying it by the quantity) Use the ROLLUP operator to include a row that gives the grand total. Write a SELECT statement that answers this question: Which customers have ordered more than one product? Return these columns: The email address from the Customers table The count of distinct products from the customer’s orders Write a SELECT statement that returns the same result set as this SELECT statement, but don’t use a join. Instead, use a subquery in a WHERE clause that uses the IN keyword. SELECT DISTINCT category_name FROM categories c JOIN products p ON c.category_id = p.category_id ORDER BY category_name Write a SELECT statement that answers this question: Which products have a list price that’s greater than the average list price for all products? Return the product_name and list_price columns for each product. Sort the results by the list_price column in descending sequence. Write a SELECT statement that returns the category_name column from the Categories table. Return one row for each category that has never been assigned to any product in the Products table. To do that, use a subquery introduced with the NOT EXISTS operator. Write a SELECT statement that returns the name and discount percent of each product that has a unique discount percent. In other words, don’t include products that have the same discount percent as another product. Sort the results by the product_name column. Use a correlated subquery to return one row per customer, representing the customer’s oldest order (the one with the earliest date). Each row should include these three columns: email_address, order_id, and order_date.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

Write the following SQL Statements:

Write a SELECT statement that returns one row for each customer that has orders with these columns:

The email_address from the Customers table

A count of the number of orders

The total amount for each order (Hint: First, subtract the discount amount from the price. Then, multiply by the quantity.)

Return only those rows where the customer has more than 1 order.

Sort the result set in descending sequence by the sum of the line item amounts.

Write a SELECT statement that answers this question: What is the total amount ordered for each product? Return these columns:

The product name from the Products table

The total amount for each product in the Order_Items (Hint: You can calculate the total amount by subtracting the discount amount from the item price and then multiplying it by the quantity)

Use the ROLLUP operator to include a row that gives the grand total.

Write a SELECT statement that answers this question: Which customers have ordered more than one product? Return these columns:

The email address from the Customers table

The count of distinct products from the customer’s orders

Write a SELECT statement that returns the same result set as this SELECT statement, but don’t use a join. Instead, use a subquery in a WHERE clause that uses the IN keyword.

SELECT DISTINCT category_name

FROM categories c JOIN products p

ON c.category_id = p.category_id

ORDER BY category_name

Write a SELECT statement that answers this question: Which products have a list price that’s greater than the average list price for all products?

Return the product_name and list_price columns for each product.

Sort the results by the list_price column in descending sequence.

Write a SELECT statement that returns the category_name column from the Categories table.

Return one row for each category that has never been assigned to any product in the Products table. To do that, use a subquery introduced with the NOT EXISTS operator.

Write a SELECT statement that returns the name and discount percent of each product that has a unique discount percent. In other words, don’t include products that have the same discount percent as another product.

Sort the results by the product_name column.

Use a correlated subquery to return one row per customer, representing the customer’s oldest order (the one with the earliest date). Each row should include these three columns: email_address, order_id, and order_date.

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