Final update

part1.sql

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+SELECT customerName AS 'Customer Name', CONCAT(lastName, ', ', firstName) AS 'Sales Rep'
+FROM customers
+JOIN employees on customers.salesRepEmployeeNumber = employees.employeeNumber;

part2.sql

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+SELECT p.productName AS 'Product Name', 
+sum(od.quantityOrdered)  AS 'Total # Ordered',
+sum(od.quantityOrdered*od.priceEach) AS 'Total Sale'
+FROM products p 
+JOIN orderdetails AS od ON p.productCode=od.productCode GROUP BY od.productCode;
+
+
+-- SELECT productName AS 'Product Name', 
+-- (SELECT sum(quantityOrdered) FROM orderdetails group by productCode HAVING products.productCode=orderdetails.productCode) AS 'Total # Ordered',
+-- (SELECT sum(quantityOrdered*priceEach) FROM orderdetails group by productCode HAVING products.productCode=orderdetails.productCode) AS 'Total Sale'
+-- FROM products;
+
+
+
+

part3.sql

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+SELECT status AS 'Order Status', count(STATUS) AS '# Orders' FROM orders GROUP BY STATUS;

part4.sql

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+SELECT pl.productLine AS 'Product Line',
+SUM(od.quantityOrdered) AS '# Orders' 
+FROM productlines pl 
+JOIN products p ON pl.productLine = p.productLine 
+JOIN orderdetails od ON p.productCode = od.productCode GROUP BY od.productCode;

part5.sql

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+SELECT CONCAT(e.lastName, ', ', e.firstName) AS 'Sales Rep', 
+sum(od.quantityOrdered) AS '# Orders', 
+IFNULL(sum(od.quantityOrdered*od.priceEach), 0.00) AS 'Total Sales'  
+FROM employees e 
+JOIN customers c ON c.salesRepEmployeeNumber=e.employeeNumber 
+JOIN orders o ON o.customerNumber=c.customerNumber 
+JOIN orderdetails od ON od.orderNumber=o.orderNumber GROUP BY e.lastName ORDER BY 'Total Sales';

part6.sql

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+SELECT DATE_FORMAT(paymentDate, '%M') AS 'Month', YEAR(paymentDate) AS 'Year', sum(amount) AS 'Payments Received'  
+FROM payments GROUP BY MONTH(paymentDate), YEAR(paymentDate);