Description
The functx:value-intersect function returns the intersection of the values in two sequences (values that appear in both sequences) in an implementation-defined order. It removes duplicates. This function is useful because the built-in intersect operator only works on nodes, not atomic values.
Arguments and Return Type| Name | Type | Description |
|---|
$arg1 |
xs:anyAtomicType* |
the first sequence |
$arg2 |
xs:anyAtomicType* |
the second sequence |
| return value |
xs:anyAtomicType* |
XQuery Function Declaration| See XSLT definition. | | XQuery Syntax for January 2007 (1.0): |
|---|
declare namespace functx = "http://www.functx.com";
declare function functx:value-intersect
( $arg1 as xs:anyAtomicType* ,
$arg2 as xs:anyAtomicType* ) as xs:anyAtomicType* {
distinct-values($arg1[.=$arg2])
} ; | | XQuery Syntax for July 2004 - November 2005 (CR): |
|---|
declare namespace functx = "http://www.functx.com";
declare function functx:value-intersect
( $arg1 as xdt:anyAtomicType* ,
$arg2 as xdt:anyAtomicType* ) as xdt:anyAtomicType* {
distinct-values($arg1[.=$arg2])
} ; | | XQuery Syntax for May 2003: |
|---|
declare namespace functx = "http://www.functx.com"
define function value-intersect
( $arg1 as xdt:anyAtomicType* ,
$arg2 as xdt:anyAtomicType* ) as xdt:anyAtomicType* {
fn:distinct-values($arg1[.=$arg2])
} |
Examples| XQuery Example | Results |
|---|
functx:value-intersect((1,2),(2,3))
|
2
|
functx:value-intersect((1,2,3),(2,3,4))
|
(2, 3)
|
functx:value-intersect((1,2,2,3),(2,3))
|
(2, 3)
|
functx:value-intersect((1,2,2,3),())
|
()
|
See AlsoHistory |
|
