如何获取sql中两个日期之间经过的分钟数

Question

我需要获取sql中两个日期之间经过的总分钟数，我尝试给出了一个错误

Msg 257, Level 16, State 3, Line 3
Implicit conversion from data type datetime to int is not allowed. Use the CONVERT function to run this query

这是我的代码： Endtime = 2014-08-01 15:00:00和StartTime = 2014-07-31 10:00:00

SELECT (EndTime - StartTime) * 1440
FROM DowntimeEvent
WHERE EventId = 1;

24 * 60 = 1440
24 hours in a day * 60 minutes in an hour

Answer 1

使用SQL的DATEDIFF（）函数：

SELECT DATEDIFF(MINUTE,StartTime,EndTime)
FROM DowntimeEvent
WHERE EventId = 1;

Answer 2

DATEDIFF是您正在寻找的。例如：

select DATEDIFF(minute, StartTime, EndTime) from DowntimeEvent where EventId = 1