如何将SQL输出固定为两位小数

Question

I have this SELECT statement:

  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 %]

Which shows the output columns as decimal figures (eg) 62.24837411 and I know I can put this into excel and format the column as a percentage, but my question is how do I get SQL to convert it to the percentage? I have tried changing the as decimal(18,2) to as decimal (4,2) which is what I want but it just throws the math overflow error?

Answer 1

Try this one :

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

for precision of 2 decimal places

Answer 2

You are place the cast in a wrong place

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 %],

Place the CAST for the whole result, like the below:

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

AS Arul Suggested, you need to use cast function on the whole column calculation.

  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 %]