FunctX XQuery Function Library > Dates, Times and Durations > Day >

functx:previous-day

The previous day

Description

The functx:previous-day function takes a date and returns a date representing the previous day.

The $date argument must be castable to xs:date, meaning that it must have the type xs:date or xs:dateTime, or be an xs:string or untyped value of the form YYYY-MM-DD.

Arguments and Return Type

XQuery Function Declaration

declare namespace functx = "http://www.functx.com";
declare function functx:previous-day
  ( $date as xs:anyAtomicType? )  as xs:date? {

   xs:date($date) - xs:dayTimeDuration('P1D')
 } ;

Examples

functx:previous-day(xs:date('2004-01-23'))

2004-01-22

functx:previous-day(
     xs:dateTime('2005-01-01T12:00:13'))

2004-12-31

See Also

History