sql中sum默认值为0的函数是COALESCE

标签：sp   on   ef   sql   as   ui   tt   rom   函数   

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

sql中sum默认值为0的函数是COALESCE

标签：sp   on   ef   sql   as   ui   tt   rom   函数   

原文地址：http://www.cnblogs.com/damoco/p/4015750.html