SELECT `products`.product_model, sum( quantity ) AS sum_total, `product_descriptions`.product_name
FROM order_products, product_descriptions, products
WHERE `order_products`.product_id = `products`.product_id
AND `product_descriptions`.product_id = `products`.product_id
AND `products`.order_id
IN (
SELECT `orders`.order_id
FROM `orders`
WHERE date_created
BETWEEN '2009-01-01'
AND '2012-01-01'
)
GROUP BY `products`.product_id
LIMIT 0 , 30
然后提示#1054 - Unknown column 'products.order_id' in 'IN/ALL/ANY subquery'
给点指点！！！
------解决方案--------------------
products表中有order_id这个字段吗？