Date Difference in Months & Days using XSLT

Question

Hi,
I have two dates and want to calculate how many months & days in between those using XSLT, do we have inbuilt functions to do the same?
E.g. Start Date: 05/25/2014
       End Date: 12/31/2014
Desired Output: 7 Months & 7 days (end date included in calculation)
Thanks in advance.

Answer 1

Hi,
In XLST 2.0 (XPath 2.0) you can just use operator - to find difference between to dates, there's an example on link below...
http://stackoverflow.com/questions/5544762/finding-the-difference-between-2-dates-in-xslt
However, Oracle's implementation is not a full XSLT 2.0 (XPath 2.0), so it may not work... Please test it and let us know...
<xsl:stylesheet version="2.0"
   xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
   xmlns:xs="http://www.w3.org/2001/XMLSchema"
   xmlns:my="my:my">
   <xsl:output omit-xml-declaration="yes" indent="yes"/>
<xsl:template match="/">
   <xsl:variable name="vDate1"
   select="my:dateFromUsDate(/*/d1)"/>
   <xsl:variable name="vDate2"
   select="my:dateFromUsDate(/*/d2)"/>
   <xsl:sequence select=
   "($vDate1 - $vDate2) div xs:dayTimeDuration('P1D')"/>
</xsl:template>
<xsl:function name="my:dateFromUsDate" as="xs:date">
  <xsl:param name="pUsDate" as="xs:string"/>
  <xsl:sequence select=
  "xs:date(concat(substring($pUsDate,7,4),
  substring($pUsDate,1,2),
  substring($pUsDate,4,2)
  "/>
</xsl:function>
</xsl:stylesheet>
Cheers,
Vlad