问题描述
我只想验证来自用户的给定输入
I just want to validate a given input from the user
Declare @UserInput NVARCHAR(20)
set @UserInput = '26/07/2013'
select ISDATE(@UserInput)
这将返回 false，因为日期是澳大利亚格式，即使日期有效
This will return false as the date is in australian format, even though the date is valid
我可以将最后一行更改为以下内容
I can change the last line to the folowing
select isdate(CONVERT(datetime, @UserInput, 103))
它的工作原理.但是如果@Userinput 是垃圾(即:- 'hello')，那么最后一条语句就会失败.我怎样才能拥有一些东西，无论用户输入什么，它都会将其验证为澳大利亚日期 (dd/mm/yyyy)?
and it works. But if the @Userinput was rubbish (ie:- 'hello'), then the last statement would fail. How can I have something, where no matter what the user enters, it validates it to an australian date (dd/mm/yyyy)?
谢谢
推荐答案
使用 SET DATEFORMAT 指定您希望输入的日期格式:
Use SET DATEFORMAT to specify the format you are expecting the date to be entered in:
SET DATEFORMAT DMY;
Declare @UserInput NVARCHAR(20)
set @UserInput = '26/07/2013'
select ISDATE(@UserInput)
我倾向于在输入到达 SQL-Server 之前执行此类验证，并确保任何日期变量都是日期.
I would be inclined to perform such validations prior to the input reaching SQL-Server, and ensuring that any date variables are dates.
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