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