On Sun, Aug 21, 2016 at 6:26 PM, Igor Tandetnik <i...@tandetnik.org> wrote:
> Create your index on nn(rsid, gene). Order of the fields matters. Imagine > a phonebook sorted by last name then first name. It's easy to find in it > all people named John Smith, or all people with last name of Smith, but > it's of no help when looking for all people named John. Well, there's still https://www.sqlite.org/optoverview.html#skipscan If the phonebook contains few last names, and many first names, SQLite might in some circumstances still be able to use that (lastname, firstname) index, when looking for a given firstname. --DD _______________________________________________ sqlite-users mailing list sqlite-users@mailinglists.sqlite.org http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users
