flwor

来源： https://stackoverflow.com/questions/63979877/how-to-query-an-sqlite-database-using-basex-and-xquery

问题 How do I return non-numeric text? for $foo in db:open("foo") return $foo//text() Assuming that every address or phone number cell from the original spreadsheet has numerals, I'm looking to return any string without numerals. context, per Michael Kay's note: Each cell of the spreadsheet has a String. There's only one column of what can easily be CSV data. Seemingly, only the names lack numerals. On that assumption, looking to break the data into "chunks" to differentiate each individual. There

问题 How do I group based on whether there's a match to [0-9] for digits with a tumbling window ? desired output: ... <record> <name>joe</name> <data>phone1</data> <data>phone2</data> </record> ... current output, not grouped: <xml> <record> <person key="$s" data="name">phone1</person> </record> <record> <person key="$s" data="name">phone2</person> </record> <record> <person key="$s" data="name">phone3sue</person> </record> <record> <person key="$s" data="name">cell4</person> </record> <record>

问题 I'm looking to select non-numerical data from an XML file towards shredding it into database columns, or at least an xmltable -like structure. This FLWOR gives a somewhat useful result: xquery version "3.0"; declare namespace office="urn:oasis:names:tc:opendocument:xmlns:text:1.0"; <ul> { for $foo in db:open("foo") return <li>{$foo//text()[not(matches(., '[0-9]'))]}</li> } </ul> However, it outputs all results into a single li tag, like: a b c d Preferred output would be of the form: a b Most

问题 Looking at the "id" field for a twitter database: thufir@dur:~/flwor$ thufir@dur:~/flwor$ basex BaseX 9.0.1 [Standalone] Try 'help' to get more information. > > open twitter Database 'twitter' was opened in 218.67 ms. > > xquery //id <id type="number">1224165280068382720</id> <id type="number">60919433</id> <id type="number">1224160851797643264</id> <id type="number">60919433</id> .. <id type="number">14248074</id> Query executed in 268.13 ms. > how would I get the same result from a FLWOR

问题 I required the following output <name>Thomas Mapother</name> <name>Tom Cruise</name> using the below XML using XQuery FLOWR Expressions. INSERT INTO XMLO1 VALUES ('<Contact> <Names> <Name Type = "Legal"> <First>Thomas</First> <Middle>T</Middle> <Last>Mapother</Last> </Name> <Name Type = "Stage"> <First>Tom</First> <Middle>C</Middle> <Last>Cruise</Last> </Name> </Names> </Contact>') I tried the below query. But it returns a different output. SELECT xDoc.query('let $names := Contact/Names/Name

问题 I need to get the following output using a FLWOR expression. <oldPlanes> <make>Cessna</make> <model>Centurian</model> <make>Piper</make> <model>Tripacer</model> </oldPlanes> using CREATE TABLE XMLO1 (xDoc XML NOT NULL) INSERT INTO XMLO1 VALUES (' <planes> <plane> <year>1977</year> <make>Cessna</make> <model>Skyhawk</model> <color>Light blue and white</color> </plane> <plane> <year>1975</year> <make>Piper</make> <model>Apache</model> <color>White</color> </plane> <plane> <year>1960</year>

问题 I have a very strange problem with a FLWOR loop, that works one way but not another. The goal is to take a string of any length, and break it into XML nodes that can only hold 80 chars each. So, first whack, this works great: for $noteLine in $noteLineArr where $noteLine != '' return if (fn:string-length(fn:normalize-space($noteLine)) < 80) then ( <NTE> <NoteRefCd>WHI</NoteRefCd> <Descr>{fn:substring(fn:normalize-space($noteLine), 1, 80)}</Descr> </NTE> ) else if (fn:string-length(fn

问题 I am having some trouble with the if-then-else command of the XQuery. Currently I am using BaseX to edit XQuery (if that matters!) if ($item/pf3:Current/pf3:Name) then ( let $Name := "None" ) else ( let $Name := data($item/pf3:Current/pf3:Name) ) This piece throws an error saying: [XPST0003] Incomplete FLWOR expression: expecting 'return'. 回答1: There is a small problem with your xquery. Here is the corrected version - let $Name := if ($item/pf3:Current/pf3:Name) then "None" else data($item

问题 I can't find an explanation on the following. I've made this test script in order to solve my previous question. xquery version "3.0" ; declare default function namespace 'local' ; declare function local:is-img-only( $element as element() ) as xs:boolean { ($element/child::*[1] instance of element(img)) and (fn:not($element/child::*[2])) and (fn:normalize-space($element) = '') } ; let $in-xml := <myxml> <p id="1"> <img id="1"/> </p> <p id="2"> <img id="1"/> hello </p> <p id="3"> <img id="1"/>