Hi all,
Can one retrieve the number of times a certain term occurs in an fts table?
This can be useful for autocompletion comboboxes. An example query
could look like this:
select term, count(term) c from myfts3table where myfts3table match 'h*';
term|c
hi|10
hello|20
The snippet function is
Hi all,
Doing a join on a fts3 table can be very slow. I'm using these tables:
CREATE TABLE general (
ID INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
...
);
CREATE VIRTUAL TABLE general_text using fts3 (
ID INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
a TEXT,
b TEXT,
c TEXT,
d TEXT,
2008/12/2 Igor Tandetnik <[EMAIL PROTECTED]>:
> You could also try something more straightforward:
>
> select distinct n from map m1 where
>exists (select 1 from map m2 where m1.n=m2.n and m2.m=3) and
>exists (select 1 from map m2 where m1.n=m2.n and m2.m=5) and
>not exists (select 1
2008/12/1 Igor Tandetnik <[EMAIL PROTECTED]>:
> Try this:
>
> select n from map
> group by n
> having
>count(case when m=3 then 1 else null end) != 0 and
>count(case when m=5 then 1 else null end) != 0 and
>count(case when m=7 then 1 else null end) = 0;
>
> Having an index on map(n)
Hi all,
I've trouble optimizing for an N:M mapping table. The schema of the
table is this:
CREATE TABLE map (n INTEGER NOT NULL, m INTEGER NOT NULL);
I want to retrieve a list of n filtered on the presence of certain
values of m, e.g. give me all n for which there is an m = 3 and m = 5,
but no
2008/2/21, Neville Franks <[EMAIL PROTECTED]>:
> If I create a table with a Primary key on a TEXT clm, will there still
> be an Index on the in-built ROWID clm. The reason for asking this is
> that I need fast (indexed) lookup to rows by both ROWID and my TEXT
> clm.
According to the
Hi all,
Is it possible to use logic operations on fields, in particular on
integers and on fixed sized blobs (256 bits/32 bytes).
I'd like to do queries like this:
select key where number_of_bits_set(value) = 10;
or
select key where value & '01011';
What would be a good method of
Hi all,
While playing around with sqlit3_open_v2, I was unpleasantly surprised
to find that my (test) database was deleted after opening it. It
turned out I was using
sqlite3_open_v2("test.db", , SQLITE_READONLY, 0);
instead of
sqlite3_open_v2("test.db", , SQLITE_OPEN_READONLY, 0);
Digging
2007/6/18, Russell Leighton <[EMAIL PROTECTED]>:
Could folks that have used fts2 in production apps/systems relate their
experiences to the group?
I would very much be interested in how folks are using it, how well it
performs with large data and general impressions.
I had a look at it for an
2007/3/6, Pierre Aubert <[EMAIL PROTECTED]>:
You can also use ft3.sourceforge.net
Does this also allow having an inverted index without actually storing
the files in the database?
Cheers,
Jos
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LECT * FROM vtable WHERE x = 'a' AND y='b' UNION
SELECT * FROM vtable WHERE x = 'a' AND y='c'
The difference is probably not large in most cases.
Cheers,
Jos
Dan.
On Fri, 2007-02-16 at 00:31 +0100, Jos van den Oever wrote:
> Hi All,
>
> I'm playing with virtual tables and found tha
Hi All,
I'm playing with virtual tables and found that when i do
SELECT * FROM vtable WHERE x = 'a' OR x = 'b'
xBestIndex is called without constraints. Is there a way to circumvent
this? I dont want sqlite to traverse all the rows just because of the
OR statement.
The version I'm using is
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