在Oracle中，是否有计算两个日期之间差异的函数?

In Oracle, is there a function that calculates the difference between two Dates?(在Oracle中，是否有计算两个日期之间差异的函数?)

问题描述

在Oracle中，是否有计算两个日期之间差异的函数?如果没有，是否有办法以小时和分钟显示两个日期之间的差异?

In Oracle, is there a function that calculates the difference between two Dates? If not, is a way to display the difference between two dates in hours and minutes?

查询:

SELECT Round(max((EndDate - StartDate ) * 24), 2) as MaximumScheduleTime,
       Round(min((EndDate - StartDate) * 24), 2)  as MinimumScheduleTime,
       Round(avg((EndDate - StartDate) * 24), 2) as AveragegScheduleTime
FROM table1

推荐答案

您可以在 Oracle 中减去两个日期.结果是一个 FLOAT，表示两个日期之间的天数.您可以对小数部分进行简单的算术运算来计算小时、分钟和秒.

You can subtract two dates in Oracle. The result is a FLOAT which represents the number of days between the two dates. You can do simple arithmetic on the fractional part to calculate the hours, minutes and seconds.

这是一个例子:

SELECT TO_DATE('2000/01/02:12:00:00PM', 'yyyy/mm/dd:hh:mi:ssam')-TO_DATE('2000/01/01:12:00:00AM', 'yyyy/mm/dd:hh:mi:ssam') DAYS FROM DUAL

结果:1​​.5

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