Hi, I'm not a big fan of putting all fields in a single field (bye bye dismax, as you say), but if you are asking whether doing it via copyField or "directly" is will make a difference - not really. If you do it with copyField, you still get to keep your individual fields, which could serve you down the road, but the index is bigger because you have duplicate data for those fields.
Otis ---- Sematext :: http://sematext.com/ :: Solr - Lucene - Nutch Lucene ecosystem search :: http://search-lucene.com/ ----- Original Message ---- > From: kenf_nc <ken.fos...@realestate.com> > To: solr-user@lucene.apache.org > Sent: Sun, January 16, 2011 3:47:56 PM > Subject: Single value vs multi value setting in tokenized field > > > I have to support both general searches (free form text) and directed > searches (field:val field2:val). To do the general search I have a field > defined as: > <field name="content" type="text" indexed="true" stored="false" > termVectors="true" multiValued="true" /> > and several copyField commands like: > <copyField source="description" dest="content" /> > <copyField source="title" dest="content" /> > <copyField source="tags" dest="content" /> > <copyField source="features" dest="content" /> > Note that tags and features are multi-value themselves. So after indexing I > have a 'general text' bucket with numerous (usually in the 20 to 30 range) > rows of strings. > > My question is would it be better, for indexing speed and search > speed/quality, to concatenate all the text into a single string and store it > in "content" as one value? What are the implications on search results? If > Description is say a couple paragraphs of text and tags are > "Cuisine","Italian","Romantic" would the tags get lost in the muck of the > bigger text? > > One thing to keep in mind. I'm sure some of you are going to say 'Dismax' > and in some situations I will, but my index has numerous document types that > have vastly different schemas. Another document may not have "title" and > "features" but might have "recommendations" and "location". In a general > query it wouldn't make sense to include every possible field in a dismax > query, I don't even know what all the fields are, new ones are added all the > time. > > Has anyone got advice, suggestions on this topic (blending directed search > with general search)? > Thanks in advance, > Ken > -- > View this message in context: >http://lucene.472066.n3.nabble.com/Single-value-vs-multi-value-setting-in-tokenized-field-tp2268635p2268635.html > > Sent from the Solr - User mailing list archive at Nabble.com. >
