The first query:
name:ipod OR -name:ipod => 0 hits
The "OR" and "-" are actually at the same level of the BooleanQuery, so the
"-" overrides the OR so it's equivalent to:
name:ipod -name:ipod => 0 hits
For the second query:
(name:ipod) OR (-name:ipod) => 3 hits
Pure negative queries are supported only at the top level, so the
"(-name:ipod)" matches nothing, so the query is equivalent to:
(name:ipod) => 3 hits
You can simply insert a "*:*" to assure that it is not a pure negative query
inside the parentheses:
(name:ipod) OR (*:* -name:ipod)
-- Jack Krupansky
-----Original Message-----
From: Anders Melchiorsen
Sent: Tuesday, January 22, 2013 4:59 PM
To: solr-user@lucene.apache.org
Subject: Confused by queries
Hello!
With the example server of Solr 4.0.0 (with *.xml indexed), I get these
results:
*:* => 32 hits
name:ipod => 3 hits
-name:ipod => 29 hits
That is all fine, but for these next queries, I would expect to get 32
hits (i.e. everything), or at least the same number of hits for both
queries:
name:ipod OR -name:ipod => 0 hits
(name:ipod) OR (-name:ipod) => 3 hits
As my expectations are not met, I must be missing something?
Thanks,
Anders.
