XQuery 中是否有任何方法可以获取自某个 Epoch 以来以毫秒为单位的当前时间? [英] Is there any way in XQuery to get the current time in milliseconds since some Epoch?

问题描述

XQuery 提供了各种 date/time 函数，如 current-dateTime()，但是我似乎找不到一个可以给我的函数自 Epoch 以来以毫秒为单位的时间.提取小时、分钟和秒的函数似乎过于单独存在.

XQuery offers various date/time functions like current-dateTime(), however I can't seem to find one which gives me the time in milliseconds since Epoch. Functions to extract hours, minutes and seconds seem to exist too individually.

在 XQuery 中获取 Epoch 时间(即 unix 时间或类似时间)的正确方法是什么?

What is the right way to get the Epoch time (i.e. unix time or similar) in XQuery?

推荐答案

(current-dateTime() - xs:dateTime("1970-01-01T00:00:00-00:00")) div xs:dayTimeDuration('PT0.001S')

返回秒数作为持续时间，然后除以1毫秒得到毫秒数作为数字.

returns the number of seconds as a duration, and then divides by 1 millisecond to get the number of milliseconds as a number.

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