Write a query to generate the total number of invoices, the invoice total for all of the invoices, the smallest of the customer purchase amounts, the largest of the customer purchase amounts, and the average of all the customer purchase amounts. Your output must match Figure P7.19. subquery to use from 18:SELECT DISTINCT INVOICE.CUS_CODE, COUNT(DISTINCT INVOICE.INV_NUMBER) AS "Number of Invoices",ROUND(SUM(LINE_PRICE*LINE_UNITS),2) AS "Total Customer Purchases"FROM CUSTOMER, INVOICE, LINEWHERE CUSTOMER.CUS_CODE=INVOICE.CUS_CODEAND INVOICE.INV_NUMBER=LINE.INV_NUMBERGROUP BY INVOICE.CUS_CODEORDER BY INVOICE.CUS_CODE; The provided image contains a statistical summary table for a dataset of customer purchases. The table includes key performance metrics:1. **Total Invoices**: The total number of invoices generated, which is 8.2. **Total Sales**: The total sales amount, which sums up to 1126.03.3. **Minimum Customer Purchases**: The smallest amount spent by a customer, which is 34.97.4. **Largest Customer Purchases**: The largest amount spent by a customer, which is 444.00.5. **Average Customer Purchases**: The average amount spent by a customer, calculated as 225.21.These metrics provide insights into customer purchasing behavior and overall sales performance.

Built-in functions: Structured Query Language (SQL) has some built-in functions and they are:…

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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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Write a query to generate the total number of invoices, the invoice total for all of the invoices, the smallest of the customer purchase amounts, the largest of the customer purchase amounts, and the average of all the customer purchase amounts. Your output must match Figure P7.19.

subquery to use from 18:

SELECT DISTINCT INVOICE.CUS_CODE, COUNT(DISTINCT INVOICE.INV_NUMBER) AS "Number of Invoices",

ROUND(SUM(LINE_PRICE*LINE_UNITS),2) AS "Total Customer Purchases"

FROM CUSTOMER, INVOICE, LINE

WHERE CUSTOMER.CUS_CODE=INVOICE.CUS_CODE

AND INVOICE.INV_NUMBER=LINE.INV_NUMBER

GROUP BY INVOICE.CUS_CODE

ORDER BY INVOICE.CUS_CODE;

The provided image contains a statistical summary table for a dataset of customer purchases. The table includes key performance metrics:

1. **Total Invoices**: The total number of invoices generated, which is 8.
2. **Total Sales**: The total sales amount, which sums up to 1126.03.
3. **Minimum Customer Purchases**: The smallest amount spent by a customer, which is 34.97.
4. **Largest Customer Purchases**: The largest amount spent by a customer, which is 444.00.
5. **Average Customer Purchases**: The average amount spent by a customer, calculated as 225.21.

These metrics provide insights into customer purchasing behavior and overall sales performance.

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