Re: levenshtein_less_equal (was: multibyte charater set in levenshtein function)
От | Alvaro Herrera |
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Тема | Re: levenshtein_less_equal (was: multibyte charater set in levenshtein function) |
Дата | |
Msg-id | 1286979419-sup-9868@alvh.no-ip.org обсуждение исходный текст |
Ответ на | Re: levenshtein_less_equal (was: multibyte charater set in levenshtein function) (Tom Lane <tgl@sss.pgh.pa.us>) |
Ответы |
Re: levenshtein_less_equal (was: multibyte charater set in levenshtein function)
Re: levenshtein_less_equal (was: multibyte charater set in levenshtein function) |
Список | pgsql-hackers |
Excerpts from Tom Lane's message of mié oct 13 10:32:36 -0300 2010: > Robert Haas <robertmhaas@gmail.com> writes: > > I spent some time hacking on this. It doesn't appear to be too easy > > to get levenshtein_less_equal() working without slowing down plain old > > levenshtein() by about 6%. > > Is that really enough slowdown to be worth contorting the code to avoid? > I've never heard of an application where the speed of this function was > the bottleneck. What if it's used on a expression index on a large table? -- Álvaro Herrera <alvherre@commandprompt.com> The PostgreSQL Company - Command Prompt, Inc. PostgreSQL Replication, Consulting, Custom Development, 24x7 support
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