Each "orderspec" is an expression, and the expression can be any XQuery expression (for example an if/then/else):
http://www.w3.org/TR/xquery/#prod-xquery-OrderByClause This will work for many things, but not if you want to manipulate more than the expression. But you can get a long way with if/then/else. If you want to do something more complex, then David's xdmp:value suggestion is a good one, where you construct a string that is your new flwor expression and evaluate it with xdmp:value. -Danny From: [email protected] [mailto:[email protected]] On Behalf Of David Steiner Sent: Friday, May 22, 2009 8:51 AM To: General Mark Logic Developer Discussion Subject: RE: [MarkLogic Dev General] Can an xquery order by clause be constructed? You could always construct the entire for clause as a string and pass it to xdmp:value(...). The MarkLogic folk probably have a better solution though. From: [email protected] [mailto:[email protected]] On Behalf Of Tim Meagher Sent: Friday, May 22, 2009 8:16 AM To: 'General Mark Logic Developer Discussion' Subject: [MarkLogic Dev General] Can an xquery order by clause be constructed? Hi folks, I would like to know if the order by clause can be programmatically constructed. For example, given a query such as the following: for $el in cts:search(xdmp:directory("/SomeDir/","infinity")/SomeNode, cts:element-value-query(xs:QName("SomeElement"), "SomeElementValue", ("case-insensitive", "punctuation-insensitive", "diacritic-insensitive"))) let $id := string($e/@ID) let $author := string($el/author[1]) let $title := string($el/title[1]) order by $id, $title, $author return $el I would like to be able to programmatically construct the order clause to be something like "$author, $title" instead of "$id, $title, $author". Thank you! Tim - aaom consulting NOTICE: This email message is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply email and destroy all copies of the original message.
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