Hi!
On Mar 01, William Au wrote:
> Sergei, but this is a phrase search. The original query is:
>
> match (keywords) against ('"16-bit Touch"' IN BOOLEAN MODE)
>
> So shouldn't all words that are actually searched on be present
> in a particular order?
Ok, sorry.
If the original query is '"16-bit Touch"' then it would be executed
functionally similar to
MATCH keywords AGAINST ('Touch' IN BOOLEAN MODE)
AND keywords LIKE '%16-bit Touch%'
> Sergei Golubchik wrote:
>
> >Hi!
> >
> >On Feb 27, Haitao Jiang wrote:
> >
> >
> >>Thanks! That was what I guessed. But how to explain
> >>"16-bit Touch" doesn't match records with "32-bit
> >>Touch" in the keywords? It just returned all the
> >>records with "16-bit Touch", i.e. "16-bit" seems does
> >>count.
> >>
> >>
> >
> >Because the presense of "16-bit" substring is verified as a
> >post-processing. Similar to
> >
> > MATCH ... AGAINST ('touch') AND ... LIKE '%16-bit%'
> >
> >and if you'd have min_word_len=3 the query would be executed
> >similar to
> >
> > MATCH ... AGAINST ('+touch +bit') AND ... LIKE '%16-bit%'
> >
> >that is rows would be selected based on an index lookup for two words,
> >and as a post-processing a substring search would filter out rows
> >without "16-bit" substring.
> >
> >Regards,
> >Sergei
> >
> >
> >
Regards,
Sergei
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