-1
ALTER FUNCTION [dbo].[avgGpa]()
RETURNS decimal(3,2)
AS
BEGIN
DECLARE @CalcGPA decimal(10,2)
DECLARE @CalcGPA2 decimal(3,2)
SELECT @CalcGPA = SUM(cast(GPA AS decimal(10,2))) from dbo.Students
SELECT @CalcGPA2 = cast(ROUND((@CalcGPA/1000),2) AS decimal(3,2))
RETURN @CalcGPA2
END
(1)你爲什麼要做這個功能? (2)你爲什麼要將GPA存儲爲字符串? (3)[爲什麼你多次提問相同的問題](http://stackoverflow.com/questions/19484825/msg-8115-arithmetic-overflow-error-converting-numeric-to-data-type-numeric-and )? –
此鏈接返回的重複問題已被刪除。看起來像過度熱心的節制? – StuartQ