substring-before

substring-before($arg1 as xs:string?, $arg2 as xs:string?) → xs:string

Arguments
	$arg1	xs:string?	The input string
	$arg2	xs:string?	A substring of the input string; the function returns the part of the input string before this substring
Result		xs:string

substring-before($arg1 as xs:string?, $arg2 as xs:string?, $collation as xs:string) → xs:string

Arguments
	$arg1	xs:string?	The input string
	$arg2	xs:string?	A substring of the input string; the function returns the part of the input string before this substring
	$collation	xs:string	The collation to be used for comparing characters
Result		xs:string

Namespace: http://www.w3.org/2005/xpath-functions

Applies to: XPath 2.0, XSLT 2.0, XQuery 1.0 and later versions