修剪浮点值SQL Server 2008中的小数点值

Question

我正在使用SQL Server 2008

SELECT dev_in AS LanguageDeveloped, AVG(dcost - scost) AS ProfitMargin 
FROM software 
GROUP BY dev_in

当我执行此代码时，输​​出为

LanguageDeveloped  ProfitMargin
basi               5600.0500000
c                  7500.7510000
pascal             4000.7500000 

如何修改ProfitMargin值5600.0500000到5600.050？

dcost和scost属于int数据类型。

Answer 1

尝试四舍五入：

round(AVG(dcost - scost),2), 
cast(round(AVG(dcost - scost),2) as numeric(36,2))