题解 | #确定已售出产品的总数#
确定已售出产品的总数
https://www.nowcoder.com/practice/a271dc25594a4db28f5b957aad07f9ee
关键字:sum()
select
sum(quantity) as items_ordered
from
OrderItems
确定已售出产品的总数
https://www.nowcoder.com/practice/a271dc25594a4db28f5b957aad07f9ee
关键字:sum()
select
sum(quantity) as items_ordered
from
OrderItems
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