context: http://www.postgresql.org/docs/9.1/static/textsearch-indexes.html http://www.postgresql.org/docs/9.1/static/textsearch-indexes... (GIN and GiST are ind

context: http://www.postgresql.org/docs/9.1/static/textsearch-indexes.html http://www.postgresql.org/docs/9.1/static/textsearch-indexes... (GIN and GiST are index types)