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18 changes: 1 addition & 17 deletions Products Without Sales(solution-1,2).txt
Original file line number Diff line number Diff line change
@@ -1,24 +1,8 @@
---- Products Without Sales(solution_1)


SELECT
product.sku, product.product_name
FROM
product
WHERE
product.id NOT IN (SELECT product_id FROM invoice_item);



----- Products Without Sales(solution_2)

SELECT
product.sku, product.product_name
FROM
product
WHERE
product.id NOT IN (SELECT product_id FROM invoice_item)
GROUP BY
1,2
ORDER BY
product.sku ASC;
product.sku ASC;