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From Apache Wiki <wikidi...@apache.org>
Subject [Solr Wiki] Update of "FieldCollapsing" by YonikSeeley
Date Tue, 16 Nov 2010 15:07:41 GMT
Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Solr Wiki" for change notification.

The "FieldCollapsing" page has been changed by YonikSeeley.
The comment on this change is: doc that group.sort is broken.
http://wiki.apache.org/solr/FieldCollapsing?action=diff&rev1=26&rev2=27

--------------------------------------------------

  ||group.limit||[number]||The number of results (documents) to return for each group.  Defaults
to 1.||
  ||group.offset||[number]||The offset into the document list of each group.||
  ||sort||[sortspec]||How to sort the groups relative to each other.  For example, {{{sort=popularity
desc}}} will cause the groups to be sorted by the popularity of the highest ranking (first)
document in each group.  Defaults to "score desc".||
- ||group.sort||[sortspec]||How to sort documents within a single group.  Defaults to the
same value as the {{{sort}}} parameter.||
+ ||group.sort||[sortspec]||How to sort documents within a single group.  Defaults to the
same value as the {{{sort}}} parameter.  NOTE: group.sort is not currently supported||
  
  Notes:
   * Any number of group commands (group.field, group.func, group.query) may be specified
in a single request.
@@ -121, +121 @@

   * Support for missing values (groupValue=null) has not yet been implemented.
   * Support for grouping on a multi-valued field has not yet been implemented.
   * Support for faceting after collapsing has not been implemented (faceting works like normal,
with grouping having no effect)
+  * Incorrect results may be given if sort != group.sort.  Use of group.sort is not recommended
at this time.
   * Further performance improvements are planned soon!
  

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