If you're easily able to do it, (i.e. you're building rather than receiving the query), you could rank them by the conjunction of the search terms first:
ORDER BY ts_rank(vector, to_tsquery('A & B & C')) desc, ts_rank(vector, to_tsquery('A | B | C')) desc Or just explicitly order by whether the conjunction matches: ORDER BY case when to_tsquery('A & B & C') @@ vector then 0 else 1 end, ts_rank(vector, to_tsquery('A | B | C')) desc I think either of these would have the property you want, but I don't know how they would otherwise affect the quality of the ranking. You should set up a test group of documents and make sure your mechanism ranks that group properly on test queries. Joel On Tue, Sep 25, 2012 at 11:16 AM, W. Matthew Wilson <m...@tplus1.com> wrote: > I want to run a query like to_tsquery("A | B | C") and then rank the > results so that if a document contained A, B, and C, then it would > rank above a document that just had some subset. > > How would I do such a thing? > > -- > W. Matthew Wilson > m...@tplus1.com > http://tplus1.com > > > -- > Sent via pgsql-general mailing list (pgsql-general@postgresql.org) > To make changes to your subscription: > http://www.postgresql.org/mailpref/pgsql-general >