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===ENFORCEINDEX===
{| width='100%'
|-
| width='120' | '''Signature'''
|{{Code|ENFORCEINDEX [boolean]}}
|-
| '''Default'''
|{{Code|false}}
|-
| '''Summary'''
|Enforces index rewritings in path expressions. See [[Indexes#Enforce Rewritings|Enforce Rewritings]] for details.
|}
===COPYNODE===
{| width='100%'
|-
| width='120' | '''Signature'''
|{{Code|COPYNODE [boolean]}}
|-
| '''Default'''
|{{Code|true}}
|-
| '''Summary'''
|When creating new nodes in XQuery via [https://www.w3.org/TR/xquery-31/#id-constructors Node Constructors], all enclosed nodes will be copied, and all resulting nodes will get new node identities. This step can be very expensive, and it can be disabled with this option. The option should be used carefully, as it changes the standard behavior of XQuery. It should preferrably be used in [[XQuery Extensions#Database Pragmas|Pragmas]].
→Query Options
===RESTXQERRORS===
{{Mark|Updated with BaseX 9.5:}} Additionally suppress stack trace in HTTP response.
{| width='100%'
|-
| '''Summary'''
|Reports parsing errors in XQuery modules in the RESTXQ directory back and returns the full error message and stack trace to the client. By default, this option is enabled. On productive systemsIn a production environment, it can be disabled in order to suppress errors that should not be seen by the clientuser of an API (the full error information can still be looked up in the database logs). See [[RESTXQ#Error Handling|RESTXQ Error Handling]] for more details.
|}
* Function inlining can be turned off by setting the value to {{Code|0}}.
* The limit can be locally overwritten via the [[XQuery Extensions#Function Inlining|%basex:inline]] annotation (follow the link to get more information on function inlining).
|}
===UNROLLLIMIT===
{{Mark|Introduced with Version 9.6:}}
{| width='100%'
|-
| width='120' | '''Signature'''
|{{Code|UNROLLLIMIT}}
|-
| '''Default'''
|{{Code|5}}
|-
| '''Summary'''
|This option controls the unroll limit:
* Loops with few iterations are ''unrolled'' by the XQuery compiler to enable further optimizations.
* If the limit is increased, more optimizations will take place, but the memory consumption and compile time will increase.
* See [[XQuery Optimizations#Loop Unrolling|Loop Unrolling]] for more details.
|}
===ENFORCEINDEX===
{| width='100%'
|-
| width='120' | '''Signature'''
|{{Code|ENFORCEINDEX [boolean]}}
|-
| '''Default'''
|{{Code|false}}
|-
| '''Summary'''
|Enforces index rewritings in path expressions. See [[Indexes#Enforce Rewritings|Enforce Rewritings]] for details.
|}
===COPYNODE===
{| width='100%'
|-
| width='120' | '''Signature'''
|{{Code|COPYNODE [boolean]}}
|-
| '''Default'''
|{{Code|true}}
|-
| '''Summary'''
|When creating new nodes in XQuery via [https://www.w3.org/TR/xquery-31/#id-constructors Node Constructors], all enclosed nodes will be copied, and all resulting nodes will get new node identities. This step can be very expensive, and it can be disabled with this option. The option should be used carefully, as it changes the standard behavior of XQuery. It should preferrably be used in [[XQuery Extensions#Database Pragmas|Pragmas]].
|}
|-
| '''Summary'''
|This option specifies the maximum Levenshtein error for fuzzy full-text matching. By default, if {{Code|0}} is assigned, the BaseX-specific fuzzy match optionerror value is calculated dynamically. See the page on [[Full-Text#Fuzzy_Querying|Full-TextsFuzzy Querying]] for more information on fuzzy queryingdetails.
|}
| '''Summary'''
|Specifies how often a query will be evaluated. The result is serialized only once, and the measured times are averages of all runs. This option can also be changed on [[Command-Line Options#BaseX Standalone|command line]] via <code>-r</code>.
|}
=Changelog=
;Version 9.6
* Added: {{Option|UNROLLLIMIT}}
;Version 9.5
* Updated: {{Option|INLINELIMIT}}: default reduced to 50.
* Updated: {{Option|RESTXQERRORS}}: additionally suppress stack trace in HTTP response
;Version 9.4
