How do not to round the number in SQL

Question

I have a query like this:

Select Customer,JobType,sum(SThours),
sum(OThours),SortMonth,
str((sum(OThours)/sum(SThours)),5,2)AS Ratios 
from #data
group by Customer,JobType,SortMonth


Sum (SThours): 688
sum(OThours): 618

The ratio should be 618/688=0.90 but my result is 1.00

I am new to SQL, and I need help. Thanks.

Answer 1

Try casting one or other side of the division to a float - to force floating point rather than integer division.

SELECT
  Customer,
  JobType,
  sum(SThours),
  sum(OThours),
  SortMonth,
  str((CAST(sum(OThours) AS FLOAT)/sum(SThours)),5,2) AS Ratios
FROM
  #data
GROUP BY
  Customer,
  JobType,
  SortMonth

Answer 2

Your problem is that you're performing an integer division, which will always result in an integer value in return. You should cast the sums to a floating point numeric value (decimal should work) before dividing them.

Answer 3

Try casting the number to decimal

SELECT
  Customer,
  JobType,
  sum(SThours),
  sum(OThours),
  SortMonth,
  str((CAST(sum(OThours) AS DECIMAL)/sum(SThours) ),5,2) AS Ratios
FROM
   #data
GROUP BY
  Customer,  JobType,  SortMonth

Try this sample fiddle

it is simple example showing getting decimal values