Online XPath tester

XPath 2.0 introduced many new features XQuery-cośtam:
- Added support for all XML simple types
- Many new functions (tripled instruction count)
- All expressions evaluate to sequence
- Introduces conditional expressions and for-loops

XPath 3.0
- Dynamic function calls (function may be called without being referenced by name (find function in collection and call)
- Inline functions
- Namespace literals - Namespace may be embedded into function name
- Support for union types - collections containing elements of different types
- Mapping operator - '!' performs evaluation for each element in sequence and concatenates results
- Introduced maps

XPath 3.1
- New operator for function chaining '=>'
- Introduced maps that store data in pair 'key:value' - 'map{ key : value, key : value }'
- Introduced arrays - they differ from sequences in that they can be nested 'array{1, 5, 7, (10 to 20)}'

[1.0] fn:last() [1.0] fn:position() [1.0] fn:count(node-set) [1.0] fn:id(object) [1.0] fn:local-name(node-set) [1.0] fn:local-name() [1.0] fn:namespace-uri(node-set) [1.0] fn:namespace-uri() [1.0] fn:name(node-set) [1.0] fn:name()

[1.0] fn:string(object) [1.0] fn:string() [1.0] fn:concat(string, string, string*) [1.0] fn:starts-with(string, string) [1.0] fn:contains(string, string) [1.0] fn:substring-before(string, string) [1.0] fn:substring-after(string, string) [1.0] fn:substring(string, number, number) [1.0] fn:substring(string, number) [1.0] fn:string-length(string) [1.0] fn:string-length() [1.0] fn:normalize-space(string) [1.0] fn:normalize-space() [1.0] fn:translate(string, string, string) [2.0] fn:string-join((string,string,...),sep)

Returns a string created by concatenating the string arguments and using the sep argument as the separator
Arguments and return type:

Type	Description
string*	string sequence to be joined
string	separator to be used

Examples:

Expression	Result
string-join(('fox', 'jumps', 'over', 'dog'), ' ')	' fox jumps over dog '
string-join(('fox', 'jumps', 'over', 'dog'))	'joxjumpsoverdog'

W3C Documentation reference: #func-string-join

[3.0] fn:string-to-codepoints(string)

Returns sequence of unicode codepoint representing the provided string
Arguments and return type:

Type	Description
string	string to be coverted to list of unicode values

Examples:

Expression	Result
string-to-codepoints("test")	(116, 101, 115, 116)

W3C Documentation reference: #func-string-to-codepoints

[2.0] fn:compare(comp1,comp2)

Returns -1 if comp1 is less than comp2, 0 if comp1 is equal to comp2, or 1 if comp1 is greater than comp2 (according to the rules of the collation that is used)
Arguments and return type:

Type	Description
string	first parameter to be compared
string	second parameter to be compared

Examples:

Expression	Result
compare('abc', 'abc')	0
compare('abc', 'abd')	-1
compare('abc1', 'abd')	-1
compare("abc1","abc")	1

W3C Documentation reference: #func-compare

[2.0] fn:compare(comp1,comp2,collation)

Returns -1 if comp1 is less than comp2, 0 if comp1 is equal to comp2, or 1 if comp1 is greater than comp2 (according to the rules of the collation that is used)
Arguments and return type:

Type	Description
string	first parameter to be compared
string	second parameter to be compared
string	collation to be used in comparison(letter weight may differ between languages)

Examples:

Expression	Result
compare('ghi', 'ghi')	0

W3C Documentation reference: #func-compare

[2.0] fn:codepoints-to-string((int,int,...))

Creates a string from a sequence of the Unicode Standard code points
Arguments and return type:

Type	Description
int*	int sequence to be converted to string

Examples:

Expression	Result
codepoints-to-string((116, 101, 115, 116))	'test'

W3C Documentation reference: #func-codepoints-to-string

[2.0] fn:codepoint-equal(comp1,comp2)

Returns true if the value of comp1 is equal to the value of comp2, according to the Unicode code point collation (http://www.w3.org/2005/02/xpath-functions/collation/codepoint), otherwise it returns false
Arguments and return type:

Type	Description
int	unicode codepoint
int	unicode codepoint

Examples:

Expression	Result
codepoint-equal(111, 111)	true
codepoint-equal(111, 112)	false
codepoint-equal("111F", "111F")	true

W3C Documentation reference: #func-codepoint-equal

[2.0] fn:normalize-unicode()

NONE

W3C Documentation reference: #func-normalize-unicode

[2.0] fn:upper-case(string)

Converts the string argument to upper-case
Arguments and return type:

Type	Description
string	string to be converted to upper case

Examples:

Expression	Result
upper-case('aabbCC')	'AABBCC'

W3C Documentation reference: #func-upper-case

[2.0] fn:lower-case(string)

Converts the string argument to lower-case
Arguments and return type:

Type	Description
string	string to be converted to upper case

Examples:

Expression	Result
lower-case('aabbCC')	'aabbcc'

W3C Documentation reference: #func-lower-case

[2.0] fn:escape-uri(stringURI,esc-res)

https://www.w3.org/TR/xpath-functions/#func-escape-uri

W3C Documentation reference: #func-escape-uri

[2.0] fn:tokenize(string,pattern)

https://www.w3.org/TR/xpath-functions/#func-tokenize
Arguments and return type:

Type	Description
string	string to be tokenized
string	string to be used to split the first argument

Examples:

Expression	Result
tokenize("fox jumps over dog", "s+")	("fox", "jumps", "over", "dog")

W3C Documentation reference: #func-tokenize

[2.0] fn:matches(string,pattern)

Returns true if the string argument matches the pattern, otherwise, it returns false
Arguments and return type:

Type	Description
string	string to search in
string	pattern to be found

Examples:

Expression	Result
matches("Xpath", "pat")	true
matches("Xpath", "abc")	false

W3C Documentation reference: #func-matches

[2.0] fn:replace(string,pattern,replace)

Returns a string that is created by replacing the given pattern with the replace argument

W3C Documentation reference: #func-replace

[2.0] fn:ends-with(string1,string2)

Returns true if string1 ends with string2, otherwise it returns false

W3C Documentation reference: #func-ends-with

[2.0] fn:avg((arg,arg,...))

Returns the average of the argument values
Arguments and return type:

Type	Description
sequence*	returns average value of provided elements

Examples:

Expression	Result
avg((1,2,3))	2

W3C Documentation reference: #func-avg

[2.0] fn:exactly-one(item,item,...)

Returns the argument if it contains exactly one item, otherwise it raises an error
Arguments and return type:

Type	Description
sequence	sequence to check

Examples:

Expression	Result
exactly-one((1))	1
exactly-one((1,1))	fn:exactly-one called with a sequence containing zero or more than one item.

W3C Documentation reference: #func-exactly-one

[2.0] fn:zero-or-one(item,item,...)

Returns the argument if it contains zero or one items, otherwise it raises an error

W3C Documentation reference: #func-zero-or-one

[2.0] fn:index-of((item,item,...),searchitem)

Returns the positions within the sequence of items that are equal to the searchitem argument

W3C Documentation reference: #func-index-of

[2.0] fn:reverse((item,item,...))

Returns the reversed order of the items specified
Arguments and return type:

Type	Description
sequence*	sequence of elements to have its order reversed

Examples:

Expression	Result
reverse(("ab", "cd", "ef"))	("ef", "cd", "ab")
reverse(("ab"))	("ab")

W3C Documentation reference: #func-reverse

[2.0] fn:one-or-more(item,item,...)

Returns the argument if it contains one or more items, otherwise it raises an error
Arguments and return type:

Type	Description
sequence	sequence to check

Examples:

Expression	Result
one-or-more((1, 2, 3))	1 2 3
one-or-more()	An empty sequence is not allowed as the first argument of fn:one-or-more()

W3C Documentation reference: #func-one-or-more

[2.0] fn:distinct-values((item,item,...),collation)

Returns only distinct (different) values
Arguments and return type:

Type	Description
sequence	sequence to extract distinct values from

Examples:

Expression	Result
distinct-values((1, 2, 3, 1, 2))	(1, 2, 3)

W3C Documentation reference: #func-distinct-values

[2.0] fn:exists(item,item,...)

Returns true if the value of the arguments IS NOT an empty sequence, otherwise it returns false

W3C Documentation reference: #func-exists

[2.0] fn:subsequence((item,item,...),start,len)

Returns a sequence of items from the position specified by the start argument and continuing for the number of items specified by the len argument. The first item is located at position 1

W3C Documentation reference: #func-subsequence

[2.0] fn:empty(item,item,...)

Returns true if the value of the arguments IS an empty sequence, otherwise it returns false

W3C Documentation reference: #func-empty

[2.0] fn:insert-before((item,item,...),pos,inserts)

Returns a new sequence constructed from the value of the item arguments

W3C Documentation reference: #func-insert-before

[2.0] fn:remove((item,item,...),position)

Returns a new sequence constructed from the value of the item arguments
Arguments and return type:

Type	Description
sequence*	sequence to be modified
integer	position to insert element from

Examples:

Expression	Result
remove(("a","b","c"), 1)	b c
remove(("a","b","c"), 0)	a b c

W3C Documentation reference: #func-remove

[2.0] fn:unordered((item,item,...))

Returns the items in an implementation dependent order

W3C Documentation reference: #func-unordered

[2.0] fn:data(item.item,...)

Takes a sequence of items and returns a sequence of atomic values
Arguments and return type:

Type	Description
sequence*	sequence to be split to atomic values

Examples:

Expression	Result
data((1,2,23, "test"))	1 2 23 test

W3C Documentation reference: #func-data

[2.0] fn:collection()

NONE

W3C Documentation reference: #func-collection

[2.0] fn:collection(string)

NONE

W3C Documentation reference: #func-collection

[2.0] fn:min((arg,arg,...))

Returns the argument that is less than the others
Arguments and return type:

Type	Description
sequence*	sequence to select minimum from

Examples:

Expression	Result
min((1,2,3))	1
min(('a', 'k'))	'a'

W3C Documentation reference: #func-min

[2.0] fn:max((arg,arg,...))

Returns the argument that is greater than the others
Arguments and return type:

Type	Description
sequence*	sequence to select maximum from

Examples:

Expression	Result
max((1,2,3))	3
max(('a', 'k'))	'k'

W3C Documentation reference: #func-max

[2.0] fn:deep-equal(param1,param2,collation)

Returns true if param1 and param2 are deep-equal to each other, otherwise it returns false

W3C Documentation reference: #func-deep-equal

[2.0] fn:adjust-date-to-timezone(date,timezone)

If the timezone argument is empty, it returns a date without a timezone. Otherwise, it returns a date with a timezone
Arguments and return type:

Type	Description
date	date to be adjusted
timezone	timezone to be imposed into date

Examples:

Expression	Result
adjust-date-to-timezone(xs:date('2011-11-15'), xs:dayTimeDuration("PT10H"))	2011-11-15+10:00

W3C Documentation reference: #func-adjust-date-to-timezone

[2.0] fn:adjust-time-to-timezone(time,timezone)

If the timezone argument is empty, it returns a time without a timezone. Otherwise, it returns a time with a timezone

W3C Documentation reference: #func-adjust-time-to-timezone

[2.0] fn:implicit-timezone()

Returns the value of the implicit timezone
Examples:

Expression	Result
implicit-timezone()	PT1H

W3C Documentation reference: #func-implicit-timezone

[2.0] fn:dateTime(date,time)

Converts the arguments to a date and a time
Arguments and return type:

Type	Description
date	date to be merged into dateTime
time	time to be merged into dateTime

Examples:

Expression	Result
dateTime(xs:date("2011-11-15"), xs:time("10:22:00"))	2011-11-15T10:22:00

W3C Documentation reference: #func-dateTime

[2.0] fn:current-time()

Returns the current time (with timezone)
Examples:

Expression	Result
current-time()	11:48:04.393361+01:00

W3C Documentation reference: #func-current-time

[2.0] fn:timezone-from-time(time)

Returns the time zone component of the argument if any
Arguments and return type:

Type	Description
time	time to extract timezone infromation from

Examples:

Expression	Result
timezone-from-time(xs:time("10:22:00+10:00"))	PT10H

W3C Documentation reference: #func-timezone-from-time

[2.0] fn:hours-from-time(time)

Returns an integer that represents the hours component in the localized value of the argument
Arguments and return type:

Type	Description
time	time to extact hours component from

Examples:

Expression	Result
hours-from-time(xs:time("10:22:00"))	10

W3C Documentation reference: #func-hours-from-time

[2.0] fn:minutes-from-time(time)

Returns an integer that represents the minutes component in the localized value of the argument
Arguments and return type:

Type	Description
time	time to extract minutes component from

Examples:

Expression	Result
minutes-from-time(xs:time("10:22:00"))	22

W3C Documentation reference: #func-minutes-from-time

[2.0] fn:seconds-from-time(time)

Returns an integer that represents the seconds component in the localized value of the argument
Arguments and return type:

Type	Description
time	Time to convert to seconds

Examples:

Expression	Result
seconds-from-time(xs:time("10:22:00"))	0

W3C Documentation reference: #func-seconds-from-time

[2.0] fn:years-from-duration(datetimedur)

Returns an integer that represents the years component in the canonical lexical representation of the value of the argument
Arguments and return type:

Type	Description
datetimedur	datetimedur to extract years component from

Examples:

Expression	Result
years-from-duration(xs:duration("P5Y2DT10H59M"))	5

W3C Documentation reference: #func-years-from-duration

[2.0] fn:months-from-duration(datetimedur)

Returns an integer that represents the months component in the canonical lexical representation of the value of the argument
Arguments and return type:

Type	Description
datetimedur	datetimedur to extract months component from

Examples:

Expression	Result
months-from-duration(xs:duration("P5Y10M2DT10H59M"))	10

W3C Documentation reference: #func-years-from-duration

[2.0] fn:days-from-duration(datetimedur)

Returns an integer that represents the days component in the canonical lexical representation of the value of the argument
Arguments and return type:

Type	Description
datetimedur	datetimedur to extract days component from

Examples:

Expression	Result
days-from-duration(xs:duration("P5Y2DT10H59M"))	2

W3C Documentation reference: #func-days-from-duration

[2.0] fn:hours-from-duration(datetimedur)

Returns an integer that represents the hours component in the canonical lexical representation of the value of the argument
Arguments and return type:

Type	Description
datetimedur	datetimedur to extract hours component from

Examples:

Expression	Result
hours-from-duration(xs:duration("P5Y2DT10H59M"))	10

W3C Documentation reference: #func-hours-from-duration

[2.0] fn:minutes-from-duration(datetimedur)

Returns an integer that represents the minutes component in the canonical lexical representation of the value of the argument
Arguments and return type:

Type	Description
datetimedur	datetimedur to extract minute component from

Examples:

Expression	Result
years-from-duration(xs:duration("P5Y2DT10H59M"))	59

W3C Documentation reference: #func-minutes-from-duration

[2.0] fn:seconds-from-duration(datetimedur)

Returns a decimal that represents the seconds component in the canonical lexical representation of the value of the argument
Arguments and return type:

Type	Description
datetimedur	datetimedur to extract seconds component from

Examples:

Expression	Result
days-from-duration(xs:duration("P5Y2DT10H59M40S"))	40

W3C Documentation reference: #func-seconds-from-duration

[2.0] fn:current-date()

Returns the current date (with timezone)

W3C Documentation reference: #func-current-date

[2.0] fn:timezone-from-date(date)

Returns the time zone component of the argument if any
Arguments and return type:

Type	Description
date	date to extract timezone information from

Examples:

Expression	Result
timezone-from-date(xs:date("2011-11-15+11:00"))	PT1H
timezone-from-date(xs:date("2011-11-15+11:00"))	PT11H

W3C Documentation reference: #func-timezone-from-date

[2.0] fn:year-from-date(date)

Returns an integer that represents the year in the localized value of the argument
Arguments and return type:

Type	Description
date	date to extract years component from

Examples:

Expression	Result
year-from-date(xs:date("2011-11-15"))	2011

W3C Documentation reference: #func-year-from-date

[2.0] fn:month-from-date(date)

Returns an integer that represents the month in the localized value of the argument
Arguments and return type:

Type	Description
date	Date to extrat the month from

Examples:

Expression	Result
month-from-date(xs:date("2011-11-15"))	11

W3C Documentation reference: #func-month-from-date

[2.0] fn:day-from-date(date)

Returns an integer that represents the day in the localized value of the argument
Arguments and return type:

Type	Description
date	date to extact day component from

Examples:

Expression	Result
day-from-date(xs:date("2011-04-23"))	23

W3C Documentation reference: #func-day-from-date

[2.0] fn:current-dateTime()

Returns the current dateTime (with timezone)
Examples:

Expression	Result
current-dateTime()	2021-03-24T18:15:09.808+01:00

W3C Documentation reference: #func-current-dateTime

[2.0] fn:timezone-from-dateTime(datetime)

Returns the time zone component of the argument if any
Arguments and return type:

Type	Description
datetime	DateTime to extract fimezone information from

Examples:

Expression	Result
timezone-from-dateTime(xs:dateTime("2021-01-15T12:10:00-03:00"))	-PT3H

W3C Documentation reference: #func-timezone-from-dateTime

[2.0] fn:year-from-dateTime(datetime)

Returns an integer that represents the year component in the localized value of the argument
Arguments and return type:

Type	Description
datetime	datetime to extract years component from

Examples:

Expression	Result
year-from-dateTime(xs:dateTime("2011-11-15T12:30-04:10"))	2011

W3C Documentation reference: #func-year-from-dateTime

[2.0] fn:month-from-dateTime(datetime)

Returns an integer that represents the month component in the localized value of the argument
Arguments and return type:

Type	Description
datetime	datetime to extract month component from

Examples:

Expression	Result
month-from-dateTime(xs:dateTime("2011-11-15T12:30-04:10"))	11

W3C Documentation reference: #func-month-from-dateTime

[2.0] fn:day-from-dateTime(datetime)

Returns an integer that represents the day component in the localized value of the argument
Arguments and return type:

Type	Description
datetime	datetime to extract day component from

Examples:

Expression	Result
day-from-dateTime(xs:dateTime("2011-11-15T12:30-04:10"))	15

W3C Documentation reference: #func-day-from-dateTime

[2.0] fn:hours-from-dateTime(datetime)

Returns an integer that represents the hours component in the localized value of the argument
Arguments and return type:

Type	Description
datetime	datetime to extract hours component from

Examples:

Expression	Result
hours-from-dateTime(xs:dateTime("2011-11-15T12:30-04:10"))	12

W3C Documentation reference: #func-hours-from-dateTime

[2.0] fn:minutes-from-dateTime(datetime)

Returns an integer that represents the minutes component in the localized value of the argument
Arguments and return type:

Type	Description
datetime	datetime to extract minutes component from

Examples:

Expression	Result
minutes-from-dateTime(xs:dateTime("2011-11-15T12:30-04:10"))	30

W3C Documentation reference: #func-minutes-from-dateTime

[2.0] fn:seconds-from-dateTime(datetime)

Returns a decimal that represents the seconds component in the localized value of the argument
Arguments and return type:

Type	Description
datetime	datetime to extract seconds component from

Examples:

Expression	Result
seconds-from-dateTime(xs:dateTime("2011-11-15T12:30:00-04:10"))	0

W3C Documentation reference: #func-seconds-from-dateTime

[2.0] fn:adjust-dateTime-to-timezone(datetime,timezone)

If the timezone argument is empty, it returns a dateTime without a timezone. Otherwise, it returns a dateTime with a timezone
Arguments and return type:

Type	Description
datetime	datetime to be adjusted
timezone	timezone to be used in provided date

Examples:

Expression	Result
adjust-dateTime-to-timezone(xs:dateTime('2011-11-15T12:30:00-04:10'), xs:dayTimeDuration("PT10H"))	2011-11-16T02:40:00+10:00

W3C Documentation reference: #func-adjust-dateTime-to-timezone

[2.0] fn:error()

https://www.w3.org/TR/xpath-functions/#func-error

W3C Documentation reference: #func-error

[2.0] fn:error(error)

https://www.w3.org/TR/xpath-functions/#func-error

W3C Documentation reference: #func-error

[2.0] fn:error(error,description)

https://www.w3.org/TR/xpath-functions/#func-error

W3C Documentation reference: #func-error

[2.0] fn:error(error,description,error-object)

https://www.w3.org/TR/xpath-functions/#func-error

W3C Documentation reference: #func-error

[2.0] fn:trace(value,label)

Used to debug queries

W3C Documentation reference: #func-trace

[2.0] fn:nilled(node)

Returns a Boolean value indicating whether the argument node is nilled

W3C Documentation reference: #func-nilled

[2.0] fn:namespace-uri-from-QName()

NONE

W3C Documentation reference: #func-namespace-uri-from-QName

[2.0] fn:base-uri()

Returns the value of the base-uri property of the current or specified node

W3C Documentation reference: #func-base-uri

[2.0] fn:base-uri(node)

Returns the value of the base-uri property of the current or specified node

W3C Documentation reference: #func-base-uri

[2.0] fn:static-base-uri()

Returns the value of the base-uri
Examples:

Expression	Result
default-collation()	http://www.w3.org/2005/xpath-functions/collation/codepoint

W3C Documentation reference: #func-static-base-uri

[2.0] fn:doc-available(URI)

Returns true if the doc() function returns a document node, otherwise it returns false

W3C Documentation reference: #func-doc-available

[2.0] fn:resolve-QName()

NONE

W3C Documentation reference: #func-resolve-QName

[2.0] fn:node-name(node)

Returns the node-name of the argument node

W3C Documentation reference: #func-node-name

[2.0] fn:default-collation()

Returns the value of the default collation

W3C Documentation reference: #func-default-collation

[2.0] fn:idref((string,string,...),node)

Returns a sequence of element or attribute nodes that have an IDREF value equal to the value of one or more of the values specified in the string argument

W3C Documentation reference: #func-idref

[2.0] fn:document-uri(node)

Returns the value of the document-uri property for the specified node

W3C Documentation reference: #func-document-uri

[2.0] fn:local-name-from-QName()

NONE

W3C Documentation reference: #func-local-name-from-QName

[2.0] fn:in-scope-prefixes()

NONE

W3C Documentation reference: #func-in-scope-prefixes

[2.0] fn:namespace-uri-for-prefix()

NONE

W3C Documentation reference: #func-namespace-uri-for-prefix

[2.0] fn:QName()

NONE

W3C Documentation reference: #func-QName

[2.0] fn:root() fn:root(node)

Returns the root of the tree to which the current node or the specified belongs. This will usually be a document node

W3C Documentation reference: #func-root

[2.0] fn:doc(URI)

NONE

W3C Documentation reference: #func-doc

[2.0] fn:resolve-uri(relative,base)

NONE

W3C Documentation reference: #func-resolve-uri

[3.0] fn:available-environment-variables()

Returns a list of environment variable names

W3C Documentation reference: #func-available-environment-variables

[3.0] fn:doc-available(uri)

The function returns true the function call fn:doc(uri) would return a document node

W3C Documentation reference: #func-doc-available

[3.0] fn:element-with-id()

https://www.w3.org/TR/xpath-functions-31/#func-element-with-id

W3C Documentation reference: #func-element-with-id

[3.0] fn:encode-for-uri(uri-part)

Encodes reserved characters in a string that is intended to be used in the path segment of a URI.

W3C Documentation reference: #func-encode-for-uri

[3.0] fn:environment-variable(name)

Returns the value of a system environment variable, if it exists

W3C Documentation reference: #func-environment-variable

[3.0] fn:escape-html-uri(uri)

Escapes a URI in the same way that HTML user agents handle attribute values expected to contain URIs

W3C Documentation reference: #func-escape-html-uri

[3.0] fn:iri-to-uri(iri)

Converts a string containing an IRI into a URI

W3C Documentation reference: #func-iri-to-uri

[3.0] fn:for-each(sequence*, function)

Applies function item to every element in sequence

W3C Documentation reference: #func-for-each

[3.0] fn:for-each-pair(sequence*, sequence*, function)

Applies the function to consecutive pairs of elements taken from sequences

W3C Documentation reference: #func-for-each-pair

[3.0] fn:fold-left(sequence*, baseValue, function)

Applies function item to every element in sequence, accumulating value

W3C Documentation reference: #func-fold-left

[3.0] fn:fold-right()

Applies function item to every element in sequence, accumulating value

W3C Documentation reference: #func-fold-right

[3.0] fn:filter(sequence*, function)

Returns those items from the sequence for which the supplied function returns true

W3C Documentation reference: #func-filter