See the explanation for Step by Step Solution and configuration.
Explanation:
Solution :
Step 1 : It is possible that, same product can be supplied by multiple supplier. Now find each product, its price according to each supplier.
val results = sqlContext.sql(......SELECT products.name AS Product Name', price, suppliers.name AS Supplier Name'
FROM products_suppliers
JOIN products ON products_suppliers.productlD = products.productID JOIN suppliers ON products_suppliers.supplierlD = suppliers.supplierlD null t results.show()
Step 2 : Find all the supllier name, who are supplying 'Pencil 3B'
val results = sqlContext.sql(......SELECT p.name AS 'Product Name", s.name AS "Supplier
Name'
FROM products_suppliers AS ps
JOIN products AS p ON ps.productID = p.productID
JOIN suppliers AS s ON ps.supplierlD = s.supplierlD
WHERE p.name = 'Pencil 3B"",M )
results.show()
Step 3 : Find all the products , which are supplied by ABC Traders.
val results = sqlContext.sql(......SELECT p.name AS 'Product Name", s.name AS "Supplier
Name'
FROM products AS p, products_suppliers AS ps, suppliers AS s WHERE p.productID = ps.productID AND ps.supplierlD = s.supplierlD
AND s.name = 'ABC Traders".....)
results. show()