这里是什么,我试图做一个例子:的SQL Server:如何对待空值为零
Select
S1.Name as S1Name,
S1.Itemcontent as S1ItemContent,
...
S2.Name as S2Name,
S2.Name as S2ItemContent,
**(S1.OrderValue * 1000*1000 + S2.OrderValue*1000 + S3.OrderValue) as OrderValue**
From (joining s1, s2 and s3 on a particular value)
Order by OrderValue
当S1.OrderValue,S2.OrderValue或S3.OrderValue为空,然后OrderValue也变为空。在这种情况下,我希望SQL Server将空值视为0。我怎样才能做到这一点?