Question

我正在尝试从DOB获取Age，Months，Hours，Minutes，Seconds，MilliSeconds，NanoSeconds但是在尝试获取毫秒或纳秒时出现错误：

Msg 535，Level 16，State 0，Line 3
日期函数导致溢出。分隔两个日期/时间实例的日期部分数量太大。尝试使用具有不太精确的日期部分的datediff。

我也试过转换方法来解决，但它不能 - 任何想法？

代码：

DECLARE @date datetime

SELECT @date = '2/11/1990 12:03:25.310 AM'

SELECT (DATEDIFF(yy, @date, GETDATE()) - CASE WHEN (MONTH(@date) > MONTH(GETDATE())) OR (MONTH(@date)
     = MONTH(GETDATE()) AND DAY(@date) > DAY(GETDATE())) THEN 1 ELSE 0 END) AS "Age in Years", 
     (DATEDIFF(MONTH, @date, GETDATE()) - CASE WHEN DAY(@date) > DAY(GETDATE()) THEN 1 ELSE 0 END) AS "Months", 
     (DATEDIFF(DAY, @date, GETDATE())) AS "DAYS",
     DATEDIFF(Hour,@date,GETDATE()) as [Hour],DATEDIFF(Minute,@date, GETDATE()) as [Minutes],DATEDIFF(Second,@date,GETDATE()) as [Seconds],
    RIGHT(CONVERT(VARCHAR, @date, 100),2) AS "AM/PM",DATEDIFF(MILLISECOND,@date,GETDATE()) as MiliSeconds

Answer 1

您试图在很长一段时间内以毫秒为单位获得结果并导致错误。

如果返回值超出int（-2,147,483,648到+2,147,483,647）的范围，则返回错误。 毫秒，startdate和enddate之间的最大差异为24天，20小时，31分钟和23.647秒。第二，最大差异是68年。

来源：http://msdn.microsoft.com/en-IN/library/ms189794.aspx

但是，我们有办法得到答案。

  1 Sec = 1000 milliseconds. 
  1 Sec = 1000000000 nano seconds.

只需将结果以秒为单位转换为十进制，并转换为毫秒和纳秒。

DECLARE @date datetime
    SELECT @date = '2/11/1990 12:03:25.310 AM'
    SELECT (DATEDIFF(yy, @date, GETDATE()) - CASE WHEN (MONTH(@date) > MONTH(GETDATE())) OR (MONTH(@date)
     = MONTH(GETDATE()) AND DAY(@date) > DAY(GETDATE())) THEN 1 ELSE 0 END) AS "Age in Years", 
     (DATEDIFF(MONTH, @date, GETDATE()) - CASE WHEN DAY(@date) > DAY(GETDATE()) THEN 1 ELSE 0 END) AS "Months", 
     (DATEDIFF(DAY, @date, GETDATE())) AS "DAYS",
     DATEDIFF(Hour,@date,GETDATE()) as [Hour],DATEDIFF(Minute,@date, GETDATE()) as [Minutes],DATEDIFF(Second,@date,GETDATE()) as [Seconds],
    RIGHT(CONVERT(VARCHAR, @date, 100),2) AS "AM/PM",

    CAST(DATEDIFF(Second,@date,GETDATE()) AS DECIMAL) * 1000 AS MiliSeconds,
    CAST(DATEDIFF(Second,@date,GETDATE()) AS DECIMAL) * 1000000000 AS NanoSeconds

在SQL Server中获取毫秒和NanoSeconds

1 个答案: