Returns the year component of an xs:date
.
fn:year-from-date
( $arg
as xs:date?
xs:integer?
If $arg
is the empty sequence, the function returns the empty sequence.
Otherwise, the function returns an xs:integer
representing the year in the
local value of $arg
. The value may be negative.
The expression fn:year-from-date(xs:date("1999-05-31"))
returns 1999
.
The expression fn:year-from-date(xs:date("2000-01-01+05:00"))
returns 2000
.
The expression fn:year-from-date(xs:date("-0002-06-01"))
returns -2
.
The year returned is the same numeric value that appears in the lexical representation, which for negative years means the meaning may vary depending on whether XSD 1.0 or XSD 1.1 conventions are in use.