Hi there, 
(group by as well as) sorting among groups is not yet (fully) implemented, but expect it to be done soon.

Kind regards
Michael

Am 14.08.2010 um 10:37 schrieb reference@gmx.de:

XQuery:

let $type := 

<type>

<item id="id1"><value>3</value></item>

<item id="id2"><value>3</value></item>

<item id="id3"><value>6</value></item>

<item id="id4"><value>5</value></item>

<item id="id5"><value>5</value></item>

</type>

for $i in $type/item

let $v := $i/value

group by $v

order by $v return $v

Result in BaseX:

<value>3</value>

<value>5</value>

<value>5</value>

As I understand XQuery the result should be as follows:

<value>3</value>

<value>5</value>

<value>6</value>

Where ist my mistake or is it a bug in BaseX?