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;

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Multiple Table

In a database, a table is used to store data in the form of rows and columns. Rows are aligned horizontally and identified by one or more values in a specific column. Columns are vertically aligned and identified by a unique column name.