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SELECT u.id, u.first_name, u.last_name, u.email, so.shipto_postal_code, so.placed_at | |
FROM users u LEFT JOIN sales_orders so | |
ON so.user_id = u.id | |
AND so.state != 'pending' | |
WHERE u.contact_me = 1 | |
ORDER BY u.id, so.placed_at DESC | |
---------------------------------- | |
SELECT u.id, u.first_name, u.last_name, u.email, so1.shipto_postal_code, so1.placed_at | |
FROM users u LEFT JOIN sales_orders so1 | |
ON so1.user_id = u.id | |
AND so1.state != 'pending' LEFT JOIN sales_orders so2 | |
ON so2.user_id = u.id | |
AND so2.state != 'pending' | |
AND so2.placed_at > so1.placed_at | |
WHERE u.contact_me = 1 | |
AND so2.id IS NULL | |
ORDER BY u.id | |
---------------------------------- | |
CREATE VIEW v_last_placed_order_per_user AS | |
SELECT user_id, MAX(placed_at) AS last_placed_at | |
FROM sales_orders | |
WHERE state != 'pending' | |
GROUP BY user_id | |
SELECT u.id, u.first_name, u.last_name, u.email, so.shipto_postal_code | |
FROM users u LEFT JOIN v_last_placed_order_per_user l | |
ON l.user_id = u.id LEFT JOIN sales_orders so | |
ON so.user_id = u.id AND so.placed_at = l.last_placed_at | |
ORDER BY u.id | |
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