Re: [HACKERS] TODO item: Implement Boyer-Moore searching (First time hacker)
Tom Lane <[email protected]> Fri, 05 Sep 2008 13:12:17 -0400
| Newsgroups | gmane.comp.db.postgresql.devel.patches |
|---|---|
| Message-ID | <[email protected]> |
"David Rowley" <[email protected]> writes: > Tom Lane wrote: >> Hmm. B-M-H has worst case search speed O(M*N) (where M = length of >> pattern, N = length of search string); whereas full B-M is O(N). Maybe we >> should build the second table when M is large? > I'll look into this. If it pays off for longer searches I'll submit a patch. > I won't have the time until after the 15th, so perhaps that's in November's > commit fest? Yes. Let's get B-M-H in during this fest and then you can look into whether a follow-on patch is worthwhile. regards, tom lane -- Sent via pgsql-patches mailing list ([email protected]) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-patches