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Need help on query when sum of total show inaccurate result


Need help on query when sum of total show inaccurate result

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testingpoke1
testingpoke1
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SELECT id_product, SUM(COALESCE(received_qty, ordered_qty)) AS total
FROM (Select id_department,id_product,received_qty, ordered_qty from
(SELECT * FROM cart_item WHERE id_cart IN (SELECT id_cart FROM purchase)) AS c
LEFT JOIN Purchase p on p.id_cart = c.id_cart ) as Z
GROUP BY id_product

http://sqlfiddle.com/#!9/58cdd3/1

I am trying to get the total sum of qty from ordered_qty and received_qty, but it only sum the id_cart = 1 and ignored other id_cart.

What's wrong with my query? Thanks.

expected output : show total of quantity based on id_product from different purchase.


Sean Lange
Sean Lange
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Group: General Forum Members
Points: 254991 Visits: 19501
Duplicate post. direct replies here. https://www.sqlservercentral.com/Forums/1909881/Need-help-on-query-when-sum-of-total-show-inaccurate-result

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