FunctX XQuery Function Library > Sequences > Distinct Values >

functx:non-distinct-values

Returns any values that appear more than once in a sequence

Description

The functx:non-distinct-values function returns any values that appear more than once in a list, based on typed value. All the values must have comparable types, or be untyped.

Arguments and Return Type

XQuery Function Declaration

declare namespace functx = "http://www.functx.com";
declare function functx:non-distinct-values
  ( $seq as xs:anyAtomicType* )  as xs:anyAtomicType* {

   for $val in distinct-values($seq)
   return $val[count($seq[. = $val]) > 1]
 } ;

Examples

functx:non-distinct-values( (1,2,1,3))

1

functx:non-distinct-values( (1,2,1,3,2.0))

(1, 2)

functx:non-distinct-values( (1,2,3) )

()

See Also

History