> Using solr-lucene query parser, is > there a difference between using "AND" and using "+" in > querries like this: > > 1) q= some_field:( one AND two AND "some > phrase") > > 2) q= some_field:(+one +two +"some > phrase") > > Are those always exactly identical in all respects, or are > there any differences in terms of result sets, relevancy > ranking, or potentially performance?
Your two examples are identical. You can verify this by adding &debugQuery=on to your search URL. AND OR NOT operators parsed/converted into their + - forms. About unitary operators versus AND OR NOT : http://wiki.apache.org/lucene-java/BooleanQuerySyntax
