XQuery/Dates and Time

Motivation
You want a quick reference page of sample functions that work with dates and times.

Method
We will provide a sample list of XQuery expressions and their results.

Current Date
This function returns the current date on the system that is executing the XQuery in W3C XML Schema date format: current-date Result: 2010-05-28-05:00

Note that the "-05:00" is the offset from GMT of the server.

Current Time
current-time Result: 07:02:11.616-05:00

Current Date and Time
current-dateTime Result 2010-05-28T06:59:05.526-05:00

Note that default the letter 'T" separates the date and the time. The results after the decimal point are the number of milliseconds.

One Week Ago
xs:date(current-dateTime) - xs:dayTimeDuration('P7D') Result: 2010-05-21-05:00