回答編集履歴
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追記
test
CHANGED
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@@ -23,3 +23,27 @@
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23
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group by o.id;
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```
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27
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追記
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28
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29
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VIEWを作れば今のスキルでもコードを書けるのでは？
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```SQL
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create view view1 as
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select o.id, sum(od.payment_number * i.price) as ans
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from orders o
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inner join order_details od
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on o.id = od.order_id
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inner join items i
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on od.item_id = i.id
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group by o.id;
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```
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