如何将SQL输出固定为两位小数

Question

我有这个SELECT语句：

  SELECT
     t.clmUnit,
     t.clmConType,
     Count(t.clmCaseID) TotalCases,
     SUM(CASE WHEN t.clmOutcomeType='Resolved' THEN 1 ELSE 0 END) TotalResolved,
     cast(SUM(CASE WHEN t.clmOutcomeType='Resolved' THEN 1 ELSE 0 END) as decimal(18,2))/cast(Count(t.clmCaseID) as decimal(18,2))*100 as [TotalResolved %],
    SUM(CASE WHEN t.clmOutcomeType='Unresolved' THEN 1 ELSE 0 END) TotalCaseProgressed,
    cast(SUM(CASE WHEN t.clmOutcomeType='Unresolved' THEN 1 ELSE 0 END) as decimal(18,2))/cast(Count(t.clmCaseID)as decimal(18,2))*100 as [TotalCaseProgressed %],
    SUM(CASE WHEN t.clmOutcomeType='Work In Progress' THEN 1 ELSE 0 END) TotalFurtherConReq,
    cast(SUM(CASE WHEN t.clmOutcomeType='Work In Progress' THEN 1 ELSE 0 END) as decimal(18,2))/cast(Count(t.clmCaseID)as decimal(18,2))*100 as [TotalFurtherConReq %]

哪个将输出列显示为十进制数字（例如62.24837411），我知道可以将其放入excel并将列格式设置为百分比，但是我的问题是如何获取SQL并将其转换为百分比？ 我尝试将as十进制（18,2）更改为十进制（4,2），这是我想要的，但是它只会引发数学溢出错误？

Answer 1

试试这个：

select  convert(DECIMAL(10,2),column)

精确到小数点后两位

Answer 2

您将cast放错了地方

cast(SUM(CASE WHEN t.clmOutcomeType='Resolved' THEN 1 ELSE 0 END) as decimal(18,2))/cast(Count(t.clmCaseID) as decimal(18,2))*100 as [TotalResolved %],

为整个结果放置CAST ，如下所示：

cast(SUM(CASE WHEN t.clmOutcomeType='Resolved' THEN 1 ELSE 0 END)/cast(Count(t.clmCaseID) as decimal(18,2))*100  as decimal(18,2)) as [TotalResolved %],

Answer 3

根据Arul建议，您需要在整个列计算中使用强制转换功能。

  SELECT
 t.clmUnit,
 t.clmConType,
 Count(t.clmCaseID) TotalCases,
 SUM(CASE WHEN t.clmOutcomeType='Resolved' THEN 1 ELSE 0 END) TotalResolved,
 cast(SUM(CASE WHEN t.clmOutcomeType='Resolved' THEN 1 ELSE 0 END))/Count(t.clmCaseID) * 100  as decimal(18,2)) as [TotalResolved %],
SUM(CASE WHEN t.clmOutcomeType='Unresolved' THEN 1 ELSE 0 END) TotalCaseProgressed,
cast(SUM(CASE WHEN t.clmOutcomeType='Unresolved' THEN 1 ELSE 0 END))/Count(t.clmCaseID) * 100 as decimal(18,2)) as [TotalCaseProgressed %],
SUM(CASE WHEN t.clmOutcomeType='Work In Progress' THEN 1 ELSE 0 END) TotalFurtherConReq,
cast(SUM(CASE WHEN t.clmOutcomeType='Work In Progress' THEN 1 ELSE 0 END))/Count(t.clmCaseID) * 100 as decimal(18,2)) as [TotalFurtherConReq %]