IsDate
有关如何处理此问题的任何建议?
07/001/2012
2012-07-002
007/002/2012
我做很多数据转换工作,这是我创建的功能,几乎每天都使用它来淘汰不良日期:
SELECT *
FROM tblImport
WHERE (ISDATE(dt) = 0
AND (dt is not null AND dt <> ''))
逆转:
CREATE FUNCTION dbo.fnCheckDate
(@InDate nvarchar(50))
RETURNS DATETIME
AS
BEGIN
declare @Return DATETIME
select @return = CASE WHEN ISDATE(@InDate) = 1
THEN CASE WHEN CAST(@InDate as DATETIME) BETWEEN '1/1/1901 12:00:00 AM' AND '6/6/2079 12:00:00 AM'
THEN @InDate
ELSE null
END
ELSE null
END
return @return
END
GO
dateformat
可能只是检查DT的Len吗?但是,当LEN有效时,它无法处理案例。也许输入验证应该在前端发生?