SQL中得到两个日期之间相隔 xx天xx小时xx分xx秒

SQL SERVER中可以这么做：

 

DECLARE @dt1 AS datetime, @dt2 AS datetime;

SELECT @dt1 = '2008-8-4 9:36:41', @dt2 = '2008-8-2 9:33:39';

DECLARE @Days AS int, @Hours AS int, @Minutes AS int, @Seconds AS int;

SET @Seconds = DATEDIFF( second, @dt2, @dt1);

SET @Days = @Seconds / (24 * 60 * 60)

SET @Seconds = @Seconds - @Days * 24 * 60 * 60

SET @Hours = @Seconds / (60 * 60);

SET @Seconds = @Seconds - @Hours * 60 * 60

SET @Minutes = @Seconds / 60;

SET @Seconds = @Seconds - @Minutes * 60;

SELECT CONVERT(varchar(10), @Days ) + '天'
          + CONVERT(varchar(10), @Hours ) + '小时'
          + CONVERT(varchar(10), @Minutes ) + '分'
          + CONVERT(varchar(10), @Seconds ) + '秒';