SQL Server 2008R2中取得详细日期到毫秒级

在SQL Server我们一般使用GETDATE()来取得日期的信息,转成Varchar时会丢掉毫秒。

其实在SQL Server中还有很多函数可以取得日期信息:

SELECT SYSDATETIME() AS SYSDATETIME,
 SYSDATETIMEOFFSET() AS SYSDATETIMEOFFSET,
 SYSUTCDATETIME() AS SYSUTCDATETIME,
 CURRENT_TIMESTAMP AS CURRENTTIMESTAMP,
 GETDATE() AS GETDATE,
 GETUTCDATE() AS GETUTCDATE;

查询结果如下:

SYSDATETIME:2012-06-08 11:31:51.3407471 

SYSDATETIMEOFFSET:2012-06-08 11:31:51.3407471 +08:00

SYSUTCDATETIME:2012-06-08 03:31:51.3407471 

CURRENTTIMESTAMP:2012-06-08 11:31:51.340 

GETDATE:2012-06-08 11:31:51.340 

GETUTCDATE:2012-06-08 03:31:51.340

如果用时间作为记录的Key,可以使用以下方式:

select replace(replace(replace(replace(SYSDATETIME(),'-',''),' ',''),':',''),'.','')

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