fn:contains

fn:contains(
   $parameter1 as xs:string?,
   $parameter2 as xs:string?,
   [$collation as xs:string]
) as xs:boolean

Returns true if the first parameter contains the string from the second parameter, otherwise returns false.

Parameters
$parameter1	The string from which to test.
$parameter2	The string to test for existence in the first parameter.
$collation	The optional name of a valid collation URI. For information on the collation URI syntax, see the Search Developer's Guide.

fn:contains("this is a string", "s a s")

=> true

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