Thomas Mueller <[EMAIL PROTECTED]> said: >> > But I also have a simpler idea that will still speed things up. It >> > involves using a regexp SQL fulltext search. While it's definitely slow >> > compared to a changed storage (the db won't be able to use indexes), >> > it's still faster because it does not involve any parsing, and uses the >> > well-tuned SQL server code to do fulltext searching. > > That will still be awfully slow because the database has to read every > single page, lot of expensive I/O.
Not any slower than requesting, parsing, and searching every message like we are now! I think it's an excellent idea: first, REGEXP for messages that might match, then parse those to see if they match in the right place (specific header, body, etc.). > For PostgreSQL there is Tsearch2 [1], Oracle has built in full text > search as far as I know, what about MySQL? I think it would be better to > use special functions if they are available. MySQL's MyISAM tables can do FULLTEXT, but not InnoDB. Bummer. Aaron --
