[Xapian-discuss] overlapping docids when searching on multiple databases?

[Per Jessen]

Richard Boulton wrote:

> On 22 October 2010 09:32, Per Jessen <per at computer.org> wrote:
>> Just a quick question - it seems to me that it's entirely possible to
>> get overlapping docids when searching on multiple databases?  For
>> instance:
> 
> This doesn't happen, because the document IDs presented by a
> multi-database are formed by interleaving the document IDs from the
> sub-databases.
> In your example, you'll be able to access one of the documents as 
> docid 19, and one as docid 20.
> 
> For details of how to convert from the docid in a multi database to
> the docid in the sub-database, see:
> http://trac.xapian.org/wiki/FAQ/MultiDatabaseDocumentID

Thank you, that was very helpful.


/Per Jessen, Zürich