Hello, I encounter what seems to be a bug with the use of Full Text Index (basex 11.9). I have created a database with FTINDEX (and CASESENS + DIACRITICS). When I call once a function in the xquery below, the result is different than when I call it twice. It seems that the whole database is searched in the case of 2 calls which is not what is expected. Xquery is : declare function local:getHit($documents, $word) { (# db:enforceindex #) { $documents//*[text() contains text {$word}] } }; let $docs := collection() let $docsSmall := for $doc in $docs where $doc/book/@category='COOKING' return $doc let $a := trace("res 1 : " || count(local:getHit($docsSmall, '2005'))) (: uncomment the line below to change getHit result :) (: let $a := trace("res 2 : " || count(local:getHit($docsSmall, '2005'))) :) return '' Result is : "res 1 : 1" After uncommenting the second call, result is: "res 1 : 2" "res 2 : 2" The same with this more simple xquery: declare function local:getHit($documents, $word) { (# db:enforceindex #) { $documents//*[text() contains text {$word}] } }; let $docs := collection() let $docsSmall := $docs[1] let $a := trace("res 1 : " || count(local:getHit($docsSmall, '2005'))) return '' Result is : "res 1 : 2" ("res 1 : 1" expected) 2 documents are populating this database : <book category="COOKING"> <title lang="en">Everyday Italian</title> <author>Giada De Laurentiis</author> <year>2005</year> <price>30.00</price> </book> and <book category="CHILDREN"> <title lang="en">Harry Potter</title> <author>J K. Rowling</author> <year>2005</year> <price>29.99</price> </book> Best, Yann -- Cet e-mail a été vérifié par le logiciel antivirus d'Avast. www.avast.com