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Update invoices-per-country.sql #3

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Update invoices-per-country.sql #3

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21 changes: 16 additions & 5 deletions invoices-per-country.sql
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Original file line number Diff line number Diff line change
@@ -1,5 +1,16 @@
SELECT co.country_name, count(*), AVG(i.total_price)
FROM country co, city ci, customer cu, invoice i
WHERE co.id = ci.country_id AND ci.id = cu.city_id AND cu.id = i.customer_id
GROUP BY co.country name
HAVING AVG(i.total_price) > (SELECT AVG(total price))
SELECT
co.country_name,
COUNT(*) AS customer_count,
AVG(i.total_price) AS avg_total_price
FROM
country co
JOIN
city ci ON co.id = ci.country_id
JOIN
customer cu ON ci.id = cu.city_id
JOIN
invoice i ON cu.id = i.customer_id
GROUP BY
co.country_name
HAVING
AVG(i.total_price) > (SELECT AVG(total_price) FROM invoice);