Hi,

Several possible solutions are discussed in http://lucene.472066.n3.nabble.com/Date-Faceting-and-Double-Counting-td502014.html

Regards,

gwk

On 4/27/2010 10:02 PM, Király Péter wrote:
Dear Solr users,

I am interesting, whether it is possible to get date facets without intersecting ranges. Now the documents which stands on boundaries of ranges are covered
by both ranges. An example:

facet result (from Solr):
<int name="1000-01-01T00:00:00Z">3</int>
<int name="1100-01-01T00:00:00Z">3</int>
<int name="1200-01-01T00:00:00Z">12</int>

If we translate into queries, it means that the number of document
matching query date_fc:[1000-01-01T00:00:00Z TO 1100-01-01T00:00:00Z] is 3,
and the number of document matching query
date_fc:[1100-01-01T00:00:00Z TO 1200-01-01T00:00:00Z] is 3 as well.
I have a document with date 1100-01-01T00:00:00Z, and it matches
both queries. I haven't found such parameters for date facets, but maybe you know a Solr secret, which prevents this intersection. I can do it with query facets, but that seems to be more complicated, than the very comfortable date facet
parameters.

Thanks
Péter

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