Question

到期日=＆＃39; 2017-10-16＆＃39;和ExpiryTime =＆＃39; 12:00 pm＆＃39;在表格和我们国家，Getdate是2017-10-16＆＃39;和currentdatetime是＆＃39; 2017-10-16 11：05：33.503＆＃39;

但是，我的代码仍然执行IF条件。为什么？

        Declare @ExpiryDate date
        Declare @ExpiryTime varchar(10)

        Set @ExpiryDate= (Select convert(varchar(11), ExpiryDate, 106) from Works where NIT_No= @NITNo and WorkNo= @WorkNo)
        Set @ExpiryTime= (Select CAST(ExpiryTime as TIME(0)) from Works where NIT_No= @NITNo and WorkNo= @WorkNo)

        IF(CONVERT(DATETIME,CONVERT(VARCHAR,@ExpiryDate,106)+ ' ' + @ExpiryTime) <= CONVERT(datetime, GETDATE()))   
        Begin
            RAISERROR('Sorry, Expiry date and time has passed', 16, 10);
            return;
        End

Answer 1

12:00 pm以24小时格式翻译为00:00。如果你把当前日期和中午12点结合起来，你希望结果是第二天的午夜，但实际上是你当天的午夜。

这应该有效：

    Declare @ExpiryDate date
    Declare @ExpiryTime varchar(10)

    Set @ExpiryDate= (Select convert(varchar(11), ExpiryDate, 106) from Works where NIT_No= @NITNo and WorkNo= @WorkNo)
    Set @ExpiryTime= (Select CAST(ExpiryTime as TIME(0)) from Works where NIT_No= @NITNo and WorkNo= @WorkNo)

    declare @dateTimeCombined datetime = dateadd(ms, datediff(ms, '00:00:00', @ExpiryTime), cast(@ExpiryDate as datetime))

    IF @dateTimeCombined <= CONVERT(datetime, GETDATE())
    Begin
        RAISERROR('Sorry, Expiry date and time has passed', 16, 10);
        return;
    End

为什么即使日期比较失败，我的代码也会执行IF块？

1 个答案: