It makes sense, but Sergei G. said : "And are you sure the numbers are correct, the first query - the one
without "IN BOOLEAN MODE" - is faster ? I would expect the opposite."
I guess that for my DB I can't expect satisfied "in boolena mode" times
?
But also when searching without "in boolean mode" and include search
criteria from TRACKS table, 13,841,930 rows , like "AND MATCH (
tracks.title) AGAINST ('remix')" I get ~10 sec. times.
Am I doing something wrong or this results are correct for this amount
of data, I would be satisfied with 0.5 - 1 sec. times
If I'm not mistaken, IN BOOLEAN MODE simply changes the parser logic. It tells MySql to process the "special" characters, like +-*"". I don't think it's the IN BOOLEAN MODE that is causing the slow query, but the fact that you are looking for the phrase.
If you were to do
SELECT artists.name, cds.title, tracks.title FROM artists, cds, tracks
WHERE artists.artistid = cds.artistid AND artists.artistid =
tracks.artistid AND cds.cdid = tracks.cdid AND MATCH (artists.name)
AGAINST ('madonna' IN BOOLEAN MODE) AND
MATCH (cds.title) AGAINST ('+music +mix +2001"'IN BOOLEAN MODE)Then you'd probably still get the fast search time, since the query simply requires all three words. MySql can resolve this just using the index.
In your example, the BOOLEAN MODE for
MATCH (artists.name) AGAINST ('madonna' IN BOOLEAN MODE)
isn't doing anything special, since you aren't using any special chars to modify the search expression.
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