问题
In SQL Server 2005 Express, the result is below
SELECT 100 / 15 --Result 6
But I wanna get approximate value 7 (like using calculator)
100 / 15 = 6.6666..
How to make it in SQL Server?
回答1:
You have to use decimal numbers e.g. 100 / 15.0. If you use integers the result is interpreted as an integer and truncated to the largest integer that is smaller than or equal to the result.
回答2:
SELECT cast(100 as float) / (15 as float)
回答3:
You want SQL Server to perform floating-point divison, as opposed to integer division. If you're using literal values, as in your example, suffix the denominator with .0 to force SQL Server to treat it as a floating-point value.
SELECT 100 / 15.0
Otherwise, make sure you declare your variables as FLOAT.
回答4:
Try declaring variables as floats:
DECLARE @var1 FLOAT
DECLARE @var2 FLOAT
SET @var1 = 100
SET @var2 = 15
SELECT @var1 / @var2
来源：https://stackoverflow.com/questions/5151018/divide-in-sql-server