Here is what i was able to do

part1.sql

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+SELECT customerName AS "Customer Name",
+CONCAT(contactLastName, ', ',contactFirstName) as "Sales Rep"
+FROM customers
+ORDER BY customerName ASC;

part2.sql

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+SELECT 
+products.productName AS "product Name", 
+orderdetails.quantityOrdered AS "Total Quantity Ordered",
+(orderdetails.quantityOrdered * orderdetails.priceEach) AS "Total Sales"
+FROM products
+INNER JOIN orderdetails
+ON products.productCode = orderdetails.productCode
+GROUP BY products.productCode
+ORDER BY (orderdetails.quantityOrdered * orderdetails.priceEach)  DESC;

part3.sql

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+SELECT Status AS "Order Status", COUNT(*) FROM 
+ORDERS
+GROUP BY status
+ORDER BY status ASC;

part4.sql

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+SELECT pl.productLine, SUM(od.quantityOrdered) AS "# Sold"
+FROM productLines pl
+LEFT JOIN products p
+ON pl.productLine = p.productLine
+LEFT JOIN orderdetails od
+ON p.productCode = od.productCode
+GROUP BY productLine;

part5.sql

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+
+COUNT(o.orderNumber) AS "# Orders", IFNULL((od.quantityOrdered * od.priceEach), 0) AS "Total Sales"
+FROM employees e JOIN customers c ON e.employeeNumber=c.salesRepEmployeeNumber
+JOIN orders o ON o.customerNumber=c.customerNumber
+JOIN orderdetails od ON od.orderNumber=o.orderNumber
+WHERE e.jobTitle="Sales Rep"
+GROUP BY 1
+ORDER BY 3 DESC;