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sql中sum默认值为0的函数是COALESCE

时间:2022-03-14 00:48

SELECT COALESCE(SUM((price/priceper)*QtyRequired),0) as total_value,
       COALESCE(SUM((price/priceper)*QtyRequired),0) as outstanding_value
FROM @Item i
LEFT OUTER JOIN @OrderItem o ON i.Id = o.ItemId
WHERE i.Id = @ItemIdTest
group by itemId

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