Hi,Dan I have trimmed it here you can download it: https://drive.google.com/file/d/1D0xKF3DaOEbvfe9yFf0aFQvpo2nxWYqF/view?usp=sharing And the problem is searching with MATCH 'أعلم*' it must find 5 rows. it could be the same as I use LIKE "%أعلم%"
On Tue, Sep 11, 2018 at 8:35 PM Dan Kennedy <danielk1...@gmail.com> wrote: > On 09/11/2018 01:26 PM, Maziar Parsijani wrote: > > Thanks for your answer Eric,Sandu > > About the first idea of Eric I have to say its correct for me when I do a > > test with another fts5 table with no huge rows but my database has that > > problem.And about the other possibility I tested that before to set "*"at > > the first and end of the match but I have got an error.Here if there is > no > > problem I will attach an example Arabic text database if you search for > > 'أعلم*' it must find 83 rows but it will find 49 which is the same with > > "أعلم" results.and if you put "*"at the both sides you will get error.I > > don't know if I did something wrong during creation but this is all I > have > > got. > > The "*" may only occur following a string in an fts5 expression, not > before: > > https://sqlite.org/fts5.html#fts5_prefix_queries > > If possible, can you trim the database down to just two rows that > demonstrate the problem and upload it somewhere? i.e. so that it > contains two rows that should both be matched by 'أعلم*', but for which > the current FTS5 only matches one. > > Even if the complete database makes the problem obvious to Arabic > readers, it will be quite difficult for non-readers to deal with. > > Thanks, > Dan. > > > > > > > > > On Tue, Sep 11, 2018 at 10:20 AM Sandu Buraga <buraga.sa...@gmail.com> > > wrote: > > > >> In Arabic you have a different direction of the text. Might be that the > >> reason? > >> > >> Sandu > >> > >> Eric Minbiole <eminbi...@gmail.com> schrieb am Di., 11. Sep. 2018, > 00:23: > >> > >>>> SELECT rowid,text > >>>> FROM table > >>>> WHERE table MATCH 'أعلم*'; > >>>> > >>>> And I have to add this that my data is Arabic text. > >>>> > >>>> This method must find words that contains 'أعلم' but it doesn't. What > >>>> should I do now. > >>>> > >>>> > >>> I just tried this in SQLite version 3.24.0 on a Mac, and it seems to > >> work. > >>> Please see my example below. In particular, the first select doesn't > >> have a > >>> *, so it doesn't find the word. The second example includes a trailing > *, > >>> so it performs a "starts with" search, and does find the match. (Note > >> that > >>> I simply doubled the letters of your original arabic text to make a > >> longer > >>> word.) > >>> > >>> MacBook-II:Programs eric$ ./sqlite3 > >>>> SQLite version 3.24.0 2018-06-04 19:24:41 > >>>> Enter ".help" for usage hints. > >>>> Connected to a transient in-memory database. > >>>> Use ".open FILENAME" to reopen on a persistent database. > >>>> sqlite> CREATE VIRTUAL TABLE fts USING fts5(doc); > >>>> sqlite> INSERT INTO fts (rowid, doc) VALUES (1, 'english text'); > >>>> sqlite> INSERT INTO fts (rowid, doc) VALUES (2, 'arabic أعلمأعلم'); > >>>> sqlite> SELECT rowid FROM fts WHERE fts MATCH 'أعلم'; > >>>> sqlite> SELECT rowid FROM fts WHERE fts MATCH 'أعلم*'; > >>>> 2 > >>>> sqlite> > >>>> > >>> > >>> One possible explanation: You mentioned that you want a "contains" > >> search. > >>> However, the trailing asterisk in your example only results in a > "begins > >>> with" search. If you really want a "contains" search, you'll need to > put > >>> the * at both the beginning and end of the match word. E.g., "WHERE fts > >>> MATCH '*asdf*'; > >>> > >>> Hope this is helpful. > >>> > >>> ~Eric > >>> _______________________________________________ > >>> sqlite-users mailing list > >>> sqlite-users@mailinglists.sqlite.org > >>> http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users > >>> > >> _______________________________________________ > >> sqlite-users mailing list > >> sqlite-users@mailinglists.sqlite.org > >> http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users > >> > > _______________________________________________ > > sqlite-users mailing list > > sqlite-users@mailinglists.sqlite.org > > http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users > > > > _______________________________________________ > sqlite-users mailing list > sqlite-users@mailinglists.sqlite.org > http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users > _______________________________________________ sqlite-users mailing list sqlite-users@mailinglists.sqlite.org http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users
