XQuery Errors

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This article is part of the XQuery Portal. It summarizes the codes of errors that are raised by the standard features and functions of XQuery. As the original specifications are pretty comprehensive, we tried our best to make this overview comprehensible to a wider range of readers.

The following tables list the error codes that are known to BaseX, a short description, and examples of queries raising that errors. Errors that are specific to BaseX can be found in the descriptions of the respective modules.

Original definitions of the error codes are found in the XQuery 3.0, XQuery 3.0 Functions, XQuery 1.0 Update, XQuery 1.0 Full Text, and EXPath HTTP Specifications.

Contents

[edit] Static Errors

Error Codes: XPST, XQST

Code Description Examples
XPST0003 An error occurred while parsing the query string (i.e., before the query could be compiled and executed). This error is the most common one, and may be accompanied by a variety of different error messages. 1+
for i in //* return $i
XPST0005 An expression will never return any results, no matter what input is provided. doc('input')/..
XPST0008 A variable or type name is used that has not been defined in the current scope. $a---
element(*, x)
XPST0017 • The specified function is unknown,
• it uses the wrong number of arguments, or, when calling Java functions:
• there is more than one function with the same number of arguments.
unknown()
count(1,2,3)
XPST0051 An unknown QName is used in a sequence type (e.g. in the target type of the cast expression). 1 instance of x
"test" cast as xs:itr
XPST0080 xs:NOTATION or xs:anyAtomicType is used as target type of cast or castable. 1 castable as xs:NOTATION
XPST0081 • A QName uses a prefix that has not been bound to any namespace, or
• a pragma or option declaration has not been prefixed.
unknown:x
(# pragma #) { 1 }
XQST0009 The query imports a schema (schema import is not supported by BaseX). import schema "x"; ()
XQST0022 Namespace values must be constant strings. <elem xmlns="{ 'dynamic' }"/>
XQST0031 The specified XQuery version is not specified. xquery version "9.9"; ()
XQST0032 The base URI was declared more than once. declare base-uri ...
XQST0033 A namespace prefix was declared more than once. declare namespace a="a";
declare namespace a="b"; ()
XQST0034 A function was declared more than once. declare function local:a() { 1 };
declare function local:a() { 2 }; local:a()
XQST0038 The default collation was declared more than once. declare default collation ...
XQST0039 Two or more parameters in a user-defined function have the same name. declare function local:fun($a, $a) { $a * $a };
local:fun(1,2)
XQDY0040 Two or more attributes in an element have the same node name. <elem a="1" a="12"/>
XQDY0045 A user-defined function uses a reserved namespace. declare function fn:fun() { 1 }; ()
XQST0047 A module was defined more than once. import module ...
XQST0048 A module declaration does not match the namespace of the specified module. import module namespace invalid="uri"; 1
XQST0049 A global variable was declared more than once. declare variable $a := 1;
declare variable $a := 1; $a
XQST0054 A global variable depends on itself. This may be triggered by a circular variable definition. declare variable $a := local:a();
declare function local:a() { $a }; $a
XQST0055 The mode for copying namespaces was declared more than once. declare copy-namespaces ...
XQST0057 The namespace of a schema import may not be empty. import schema ""; ()
XQST0059 The schema or module with the specified namespace cannot be found or processed. import module "unknown"; ()
XQST0060 A user-defined function has no namespace. declare default function namespace "";
declare function x() { 1 }; 1
XQST0065 The ordering mode was declared more than once. declare ordering ...
XQST0065 The default namespace mode for elements or functions was declared more than once. declare default element namespace ...
XQST0067 The construction mode was declared more than once. declare construction ...
XQST0068 The mode for handling boundary spaces was declared more than once. declare boundary-space ...
XQST0069 The default order for empty sequences was declared more than once. declare default order empty ...
XQST0070 A namespace declaration overwrites a reserved namespace. declare namespace xml=""; ()
XQST0071 A namespace is declared more than once in an element constructor. <a xmlns="uri1" xmlns="uri2"/>
XQST0075 The query contains a validate expression (validation is not supported by BaseX). validate strict { () }
XQST0076 A group by or order by clause specifies an unknown collation. for $i in 1 to 10
order by $i collation "unknown"
return $i
XQST0079 A pragma was specified without the expression that is to be evaluated. (# xml:a #) {}
XQST0085 An empty namespace URI was specified. <pref:elem xmlns:pref=""/>
XQST0087 An unknown encoding was specified. Note that the encoding declaration is currently ignored in BaseX. xquery version "1.0" encoding "a b"; ()
XQST0088 An empty module namespace was specified. import module ""; ()
XQST0089 Two variables in a for or let clause have the same name. for $a at $a in 1 return $i
XQST0090 A character reference specifies an invalid character. "&#0;"
XQST0093 A module depends on itself. This may be triggered by a circular module definition. import module ...
XQST0094 group by references a variable that has not been declared before. for $a in 1 group by $b return $a
XQST0097 A decimal-format property is invalid. declare default decimal-format digit = "xxx"; 1
XQST0098 A single decimal-format character was assigned to multiple properties. declare default decimal-format digit = "%"; 1
XQST0099 The context item was declared more than once. declare context item ...
XQST0106 An annotation has been declared twice in a variable or function declaration. declare %updating %updating function ...
XQST0108 Output declarations may only be specified in the main module. Module: declare output ...
XQST0109 The specified serialization parameter is unknown. declare option output:unknown "..."; 1
XQST0110 A serialization parameter was specified more than once in the output declarations. declare option output:indent "no";
declare option output:indent "no"; 1
XQST0111 A decimal format was declared more than once. declare decimal-format ...
XQST0113 Context item values may only be in the main module. Module: declare context item := 1;
XQST0114 A decimal-format property has been specified more than once. declare decimal-format EN NaN="!" NaN="?"; ()

[edit] Type Errors

Error Codes: XPTY, XQTY

Code Description Examples
XPTY0004 This error is raised if an expression has the wrong type, or cannot be cast into the specified type. It may be raised both statically (during query compilation) or dynamically (at runtime). 1 + "A"
abs("a")
1 cast as xs:gYear
XPTY0018 The result of the last step in a path expression contains both nodes and atomic values. doc('input.xml')/(*, 1)
XPTY0019 The result of a step (other than the last step) in a path expression contains an atomic values. (1 to 10)/*
XQTY0024 An attribute node cannot be bound to its parent element, as other nodes of a different type were specified before. <elem>text { attribute a { "val" } }</elem>
XQTY0105 A function item has been specified as content of an element. <X>{ false#0 }</X>

[edit] Dynamic Errors

Error Codes: XPDY, XQDY

Code Description Examples
XPDY0002 • No value has been defined for an external variable, or
• no context item has been set before the query was executed.
declare variable $x external; $x
descendant::*
XPDY0050 • The operand type of a treat expression does not match the type of the argument, or
• the root of the context item must be a document node.
"string" treat as xs:int
"string"[/]
XQDY0025 Two or more attributes in a constructed element have the same node name. element x { attribute a { "" } attribute a { "" } }
XQDY0026 The content of a computed processing instruction contains "?>". processing-instruction pi { "?>" }
XQDY0041 The name of a processing instruction is invalid. processing-instruction { "1" } { "" }
XQDY0044 The node name of an attribute uses reserved prefixes or namespaces. attribute xmlns { "etc" }
XQDY0064 The name of a processing instruction equals "XML" (case insensitive). processing-instruction xml { "etc" }
XQDY0072 The content of a computed comment contains "--" or ends with "-". comment { "one -- two" }
XQDY0074 The name of a computed attribute or element is invalid, or uses an unbound prefix. element { "x y" } { "" }
XQDY0095 A sequence with more than one item was bound to a group by clause. let $a := (1,2) group by $a return $a
XQDY0096 The node name of an element uses reserved prefixes or namespaces. element { QName("uri", "xml:n") } {}
XQDY0101 Invalid namespace declaration. namespace xmlns { 'x' }
XQDY0102 Duplicate namespace declaration. element x { namespace a {'b'}, namespace a {'c'} }

[edit] Functions Errors

Error Codes: FOAR, FOCA, FOCH, FODC, FODF, FODT, FOER, FOFD, FONS, FORG, FORX, FOTY, FOUT

Code Description Examples
FOAR0001 A value was divided by zero. 1 div 0
FOAR0002 A numeric declaration or operation causes an over- or underflow. 12345678901234567890
xs:double("-INF") idiv 1
FOCA0002 • A float number cannot be converted to a decimal or integer value, or
• a function argument cannot be converted to a valid QName.
xs:int(xs:double("INF"))
QName("", "el em")
FOCA0003 A value is too large to be represented as integer. xs:integer(99e100)
FOCA0005 "NaN" is supplied to duration operations. xs:yearMonthDuration("P1Y") * xs:double("NaN")
FOCH0001 A codepoint was specified that does not represent a valid XML character. codepoints-to-string(0)
FOCH0002 A unsupported collation was specified in a function. compare('a', 'a', 'unknown')
FOCH0003 A unsupported normalization form was specified in a function. normalize-unicode('a', 'unknown')
FODC0001 The argument specified in fn:id() or fn:idref() must have a document node as root. id("id0", <xml/>)
FODC0002 The specified document resource cannot be retrieved. doc("unknown.xml")
FODC0004 The specified collection cannot be retrieved. collection("unknown")
FODC0005 The specified URI to a document resource is invalid. doc("<xml/>")
FODC0006 The string passed to fn:parse-xml() is not well-formed. parse-xml("<x/")
FODC0007 The base URI passed to fn:parse-xml() is invalid. parse-xml("<x/>", ":")
FODF1280 The name of the decimal format passed to fn:format-number() is invalid. format-number(1, "0", "invalid")
FODF1310 The picture string passed to fn:format-number() is invalid. format-number(1, "invalid")
FODT0001 An arithmetic duration operation causes an over- or underflow. xs:date('2000-01-01') + xs:duration('P99999Y')
FODT0002 A duration declaration or operation causes an over- or underflow. implicit-timezone() div 0
FODT0003 An invalid timezone was specified. adjust-time-to-timezone(xs:time("01:01:01"), xs:dayTimeDuration("PT20H"))
FOER0000 Error triggered by the fn:error() function. error()
FOFD1340 The picture string passed to fn:format-date(), fn:format-time() or fn:format-dateTime() is invalid. format-date(current-date(), "[]")
FOFD1350 The picture string passed to fn:format-date(), fn:format-time() or fn:format-dateTime() specifies an non-available component. format-time(current-time(), "[Y2]")
FONS0004 A function has a QName as argument that specifies an unbound prefix. resolve-QName("x:e", <e/>)
FORG0001 A value cannot be cast to the required target type. xs:integer("A")
1 + <x>a</x>
FORG0002 The URI passed to fn:resolve-URI() is invalid. resolve-URI(":")
FORG0003 fn:zero-or-one() was called with more than one item. zero-or-one((1, 2))
FORG0004 fn:one-or-more() was called with zero items. one-or-more(())
FORG0005 fn:exactly-one() was called with zero or more than one item. exactly-one((1, 2))
FORG0006 A wrong argument type was specified in a function call. sum((1, "string"))
FORG0008 The arguments passed to fn:dateTime() have different timezones. dateTime(xs:date("2001-01-01+01:01"), current-time())
FORX0001 A function specifies an invalid regular expression flag. matches('input', 'query', 'invalid')
FORX0002 A function specifies an invalid regular expression. matches('input', '[')
FORX0003 A regular expression matches an empty string. tokenize('input', '.?')
FORX0004 The replacement string of a regular expression is invalid. replace("input", "match", "\")
FOTY0012 An item has no typed value. count#1
FOTY0013 Functions items cannot be atomized, have no defined equality, and have no string representation. data(false#0)
FOTY0014 Function items have no string representation. string(map {})
FOTY0015 Function items cannot be compared. deep-equal(false#0, true#0)
FOUT1170 Function argument cannot be used to retrieve a text resource. unparsed-text(':')
FOUT1190 Encoding to retrieve a text resource is invalid or not supported. unparsed-text('file.txt', 'InvalidEncoding')

[edit] Serialization Errors

Error Codes: SEPM, SERE, SESU

Code Description Examples
SESU0007 The specified encoding is not supported. declare option output:encoding "xyz"; 1
SEPM0009 omit-xml-declaration is set to yes, and standalone has a value other than omit.
SEPM0010 method is set to xml, undeclare-prefixes is set to yes, and version is set to 1.0.
SERE0014 method is set to html, and an invalid HTML character is found.
SERE0015 method is set to html, and a closing bracket (>) appears inside a processing instruction.
SEPM0016 A specified parameter is unknown or has an invalid value. declare option output:indent "nope"; 1

[edit] Update Errors

Error Codes: FOUP, XUDY, XUST, XUTY

Code Description Examples
FOUP0001 The first argument of fn:put() must be a document node or element. fn:put(text { 1 }, 'file.txt')
FOUP0002 The second argument of fn:put() is not a valid URI. fn:put(<a/>, '//')
XUDY0009 The target node of a replace expression needs a parent in order to be replaced. replace node <target/> with <new/>
XUDY0014 The expression updated by the modify clause was not created by the copy clause. let $a := doc('a') return copy $b := $a modify delete node $a/* return $b
XUDY0015 In a rename expression, a target is renamed more than once. let $a := <xml/> return (rename node $a as 'a', rename node $a as 'b')
XUDY0016 In a replace expression, a target is replaced more than once. let $a := <x>x</x>/node() return (replace node $a with <a/>, replace node $a with <b/>)
XUDY0017 In a replace value of expression, a target is replaced more than once. let $a := <x/> return (replace value of node $a with 'a', replace value of node $a with 'a')
XUDY0021 The resulting update expression contains duplicate attributes. copy $c := <x a='a'/> modify insert node attribute a {""} into $c return $c
XUDY0023 The resulting update expression conflicts with existing namespaces. rename node <a:ns xmlns:a='uri'/> as QName('URI', 'a:ns')
XUDY0024 New namespaces conflict with each other. copy $n := <x/> modify (insert node attribute { QName('uri1', 'a') } { "" } into $n, insert node attribute { QName('uri2', 'a') } { "" } into $n) return $n
XUDY0027 Target of an update expression is an empty sequence. insert node <x/> into ()
XUDY0029 The target of an update expression has no parent node. insert node <new/> before <target/>
XUDY0030 Attributes cannot be inserted before or after the child of a document node. insert node <e a='a'/>/@a after document { <e/> }/*
XUDY0031 Multiple calls to fn:put() address the same URI. for $i in 1 to 3 return put(<a/>, 'file.txt')
XUST0001 No updating expression is allowed here. delete node /, "finished."
XUST0002 An updating expression is expected in the modify clause or an updating function. copy $a := <x/> modify 1 return $a
XUST0003 The revalidation mode was declared more than once. declare revalidation ...
XUST0026 The query contains a revalidate expression (revalidation is not supported by BaseX). declare revalidation ...
XUST0028 no return type may be specified in an updating function. declare updating function local:x() as item() { () }; ()
XUTY0004 New attributes to be inserted must directly follow the root node. insert node (<a/>, attribute a {""}) into <a/>
XUTY0005 A single element or document node is expected as target of an insert expression. insert node <new/> into attribute a { "" }
XUTY0006 A single element, text, comment or processing instruction is expected as target of an insert before/after expression. insert node <new/> after attribute a { "" }
XUTY0007 Only nodes can be deleted. delete node "string"
XUTY0008 A single element, text, attribute, comment or processing instruction is expected as target of a replace expression. replace node document { <a/> } with <b/>
XUTY0010 In a replace expression, in which no attributes are targeted, the replacing nodes must not be attributes as well. replace node <a><b/></a>/b with attribute size { 1 }
XUTY0011 In the replace expression, in which attributes are targeted, the replacing nodes must be attributes as well. replace node <e a=""/>/@a with <a/>
XUTY0012 In a rename expression, the target nodes must be an element, attribute or processing instruction. rename node text { 1 } as <x/>
XUTY0013 An expression in the copy clause must return a single node. copy $c := (<a/>, <b/>) modify () return $c
XUTY0022 An attribute must not be inserted into a document node. insert node <e a=""/>/@a into document {'a'}

[edit] Full-Text Errors

Error Codes: FTDY, FTST

Code Description Examples
FTDY0016 The specified weight value is out of range. 'a' contains text 'a' weight { 1001 }
FTDY0017 The not in operator contains a string exclude. 'a' contains text 'a' not in (ftnot 'a')
FTDY0020 The search term uses an invalid wildcard syntax. 'a' contains text '.{}' using wildcards
FTST0007 The full-text expression contains an ignore option (the ignore option is not supported by BaseX). 'a' contains text 'a' without content 'x'
FTST0008 The specified stop word file could not be opened or processed. 'a' contains text 'a' using stop words at 'unknown.txt'
FTST0009 The specified language is not supported. 'a' contains text 'a' using language 'aaa'
FTST0018 The specified thesaurus file could not be opened or processed. 'a' contains text 'a' using thesaurus at 'aaa'
FTST0019 A match option was specified more than once. 'a' contains text 'a' using stemming using stemming

[edit] BaseX Errors

Error Codes: BASX

Code Description Examples
BASX0000 Generic error, which is used for exceptions in Java bindings.
BASX0001 The current user has insufficient permissions to execute an expression. file:delete('file.txt'): Create rights needed.
BASX0002 The specified database option is unknown. declare option db:xyz "no"; 1
BASX0003 Errors related to RESTXQ. %restxq:GET('x')

Additional, module-specific error codes are listed in the descriptions of the query modules.

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