> > Got a crash in the FTS5 code which only happens on a specific search
> > query (int the form of: "ab cd" OR "ab cd" *)
> > The crash occurs In fts5MultiIterNext(), on the following line:
> >
> > pSeg->xNext(p, pSeg, );
> >
> > Debugger shows that pSeg is set, but xNext is null.
> >
> >
Got a crash in the FTS5 code which only happens on a specific search
query (int the form of: "ab cd" OR "ab cd" *)
The crash occurs In fts5MultiIterNext(), on the following line:
pSeg->xNext(p, pSeg, );
Debugger shows that pSeg is set, but xNext is null.
There are items which match the
> Why not simply query all databases and merge the results in the
> application? I would think that would perform equally well, and the
> merging
> is likely straightforward to implement…
Yes I was thinking about that a well, just wanted to check if there was
already some code for the merging
I use sqlite as an application specific format to distribute data to
mobile clients.
The data is generated and full-text indexed (FTS5) on the server, the
clients then
simply download one or more compressed db files.
Now I'd like to generate a full-text index for all downloaded files on
the
>>Another open question I have is how to access the user query expression
>>from within the ranking function. Don't think this is exposed anywhere.
>>(Looking at the source I noticed Fts5Expr *, but it is private).
>>The best option would then be to pass it through to the
>>ranking function as a
>You could run a regular database query from within the auxiliary
>function implementation. Not sure how that would perform though -
>perhaps similarly to the FTS3/4 approach, perhaps a little better.
>Or, you could add the "weight" as an UNINDEXED column to the fts5
>documents table. Then
I'm currently implementing FTS5 in my application and I'm at the stage
where
I want to rank the results in an efficient way. I'm following the
examples
from "Appendix A: Search Application Tips"
(https://www.sqlite.org/fts3.html#appendix_a).
Similar to the example there I have a static weight
One thing I'd love to see addressed is an issue I reported back in May:
sqlite3_auto_extension + custom FTS5 tokenizer
http://thread.gmane.org/gmane.comp.db.sqlite.general/101685/focus=101697
http://mailinglists.sqlite.org/cgi-bin/mailman/private/sqlite-users/2016-May/066676.html
The workaround
>> I'm getting "database disk image is malformed" errors when running a
>> query containing OR and ordering by rank against a FTS5 index:
> What happens when you run
> PRAGMA integrity_check
> on it ?
"ok" (this is on a transient in-memory db)
$ sqlite3
SQLite version 3.13.0 2016-05-18
I'm getting "database disk image is malformed" errors when running a
query containing OR and ordering by
rank against a FTS5 index:
Â
$ sqlite3
SQLite version 3.13.0 2016-05-18 10:57:30
sqlite> create virtual table foo using fts5(bar);
sqlite> insert into foo values('test');
sqlite> select rowid
> I?m currently implementing a custom FTS5 tokenizer which I?d like to
> automatically register for each db connection.
>
> So I tried to register an extension hook with sqlite3_auto_extension but when
> my code is called the FTS_* modules have not been initialized, because
>
I?m currently implementing a custom FTS5 tokenizer which I?d like to
automatically register for each db connection.
So I tried to register an extension hook with sqlite3_auto_extension but when
my code is called the FTS_* modules have not been initialized, because
sqlite3Fts5Init() is called
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