我需要写一下卢旺达国防军,试图把一个var子带给一片大int,如果失败,要么将这种大int或零。 问题在于——我无法找到办法,在扼杀不是有效数目时,保持 cast误。 TRY CATCH在职能范围内开展工作,我不知道要做什么。
为此:
Create Function dbo.Convert2BigInt(@Data VarChar(100))
Returns BigInt
As
Begin
Return(Case When IsNumeric(@Data + .0e0 ) = 1
Then Convert(BigInt, @Data)
Else Convert(BigInt, 0)
End)
End
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