On Thu, Feb 6, 2014 at 8:31 PM, PostgreSQL - Hans-Jürgen Schönig < postg...@cybertec.at> wrote:
> i think there is one more thing which would be really good in GIN and > which would solve a ton of issues. > atm GIN entries are sorted by item pointer. > if we could sort them by a "column" it would fix a couple of real work > issues such as ... > > SELECT ... FROM foo WHERE "tsearch_query" ORDER BY price DESC > LIMIT 10 > > ... or so. > it many cases you want to search for a, say, product and find the cheapest > / most expensive one. > if the tsearch_query yields a high number of rows (which it often does) > the subsequent sort will kill you. > This is not intended to be a small change. However, some solution might be possible in post 9.4 gin improvements or in new secret indexing project which will be presented at PGCon :-) ------ With best regards, Alexander Korotkov.
