No comment? Do I need to recast the problem or something?
Thanks,
scott
On Fri, Apr 26, 2013 at 9:54 PM, Scott Hess sh...@google.com wrote:
Someone over here was trying to use a shared-cache in-memory database with
two connections, one a read-write connection for purposes of populating
Someone over here was trying to use a shared-cache in-memory database with
two connections, one a read-write connection for purposes of populating
things, the other a read-only connection for purposes of letting a
(trusted) user make queries. They were surprised to find out that they
could run
On Fri, Apr 12, 2013 at 9:28 AM, Lukas Gebauer gebyl...@mlp.cz wrote:
I have contentless FTS4 index for searching some my external data
paired by docid.
What I can do, when my existing previously indexed document was
changed? I need to update existing FTS4 index too. But documentation
says:
Given a 3.7.15.2 OSX binary fresh from the website, the following scenario
seems suspect:
./sqlite3 trial.db
sqlite pragma secure_delete = 1;
1
sqlite pragma journal_mode = persist;
persist
sqlite pragma journal_size_limit = 4096;
4096
sqlite pragma page_size;
1024
sqlite create table x (x);
On Tue, Jan 29, 2013 at 7:52 AM, Yuriy Kaminskiy yum...@gmail.com wrote:
User-space database encryption and all safe data erase tools only
provide you
with warm feeling of safety without any real security.
I agree. I am merely pointing out that I think that this result may be
surprising in
On Sat, Aug 18, 2012 at 10:00 AM, Mohit Sindhwani m...@onghu.com wrote:
On 17/8/2012 7:14 PM, Dominique Pellé wrote:
This gives the tokens:
sqlite CREATE VIRTUAL TABLE ft USING fts4(x);
sqlite INSERT INTO ft VALUES(hello world);
sqlite INSERT INTO ft VALUES(hello there);
sqlite CREATE
On Tue, Mar 20, 2012 at 8:25 PM, Jay A. Kreibich j...@kreibi.ch wrote:
On Tue, Mar 20, 2012 at 01:59:59PM -0700, Udi Karni scratched on the wall:
Is there a way to go directory from original to journal/final -
skipping the creation of the Temp version?
No, it requires all three copies.
...
On Thu, Mar 8, 2012 at 9:28 AM, Pavel Ivanov paiva...@gmail.com wrote:
Question: Does anybody know of a better way to get memory shared among
processes other than to create a fake file and mmap() it? Are there some
magic options to mmap() (perhaps Linux-only options) that prevent it from
Note that importing the .dump file does effectively strip the indices
and re-create them. In fact, there's a good chance that if you drop
the indices, VACUUM, and then compress the database file, you'll find
that it comes close to what you get with the .dump-then-compress
values.
-scott
On
On Fri, Feb 17, 2012 at 1:02 PM, Richard Hipp d...@sqlite.org wrote:
On Fri, Feb 17, 2012 at 3:52 PM, Marc L. Allen
mlal...@outsitenetworks.comwrote:
My concept of always consistent is a.. for lack of a better term...
virtual concept. That is, anytime anything accesses the database, as a
On Mon, Feb 13, 2012 at 9:24 AM, Steinar Midtskogen
stei...@latinitas.org wrote:
[Peter Aronson]
(2) You can associate data with an argument to a regular user-defined
function using sqlite3_set_auxdata() and sqlite3_get_auxdata() as long
as the value of the argument is static. If you don't
On Mon, Feb 13, 2012 at 11:51 AM, Steinar Midtskogen
stei...@latinitas.org wrote:
[Scott Hess]
Unfortunately, I can't offhand think of a reasonable solution for you,
I think I'd just use the SELECT to generate the data, while
calculating the moving average in my application code.
Yes
On Mon, Feb 13, 2012 at 12:28 PM, Simon Slavin slav...@bigfraud.org wrote:
On 13 Feb 2012, at 7:51pm, Steinar Midtskogen wrote:
One should think that the ability to calculate a moving average would
be a pretty common request. But people do it in their application
code instead?
Actually, my
On Fri, Nov 11, 2011 at 9:58 AM, nobre rafael.ro...@novaprolink.com.br wrote:
Hi, I'm studying the indexing mechanism of FTS3/4, I can pretty much
understand how doclists, terms, segments are created and stored, but one
thing I can't grasp is about updating and deleting docs and keeping up the
On Mon, Nov 7, 2011 at 9:02 AM, Mills, Steve smi...@makemusic.com wrote:
if(pageSize 0) {
SqliteStatement cmd(PRAGMA page_size = ?, *this);
cmd.BindToInt(1, syz);
cmd.Step();
}
Can't prepare
On Fri, Oct 28, 2011 at 5:36 AM, Jay A. Kreibich j...@kreibi.ch wrote:
On Fri, Oct 28, 2011 at 01:33:31PM +0200, Gert Corthout scratched on the wall:
we have a database that only performs insert statements on a table
(database contains only this table), is it in this case a good idea
to reduce
On Wed, Oct 19, 2011 at 7:56 AM, Fabian fabianpi...@gmail.com wrote:
2011/10/19 Alexey Pechnikov pechni...@mobigroup.ru
FTS use index multi-tree and de-facto has _no_ insert speed degradation.
Thanks, that's good to hear! It makes me wonder why SQLite doesn't use that
same multi-tree
On Wed, Oct 19, 2011 at 12:50 PM, Fabian fabianpi...@gmail.com wrote:
2011/10/19 Scott Hess sh...@google.com
To be clear, how it works is that new insertions are batched into a
new index tree, with index trees periodically aggregated to keep
selection efficient and to keep the size contained
On Tue, Sep 27, 2011 at 11:18 AM, Gabor Grothendieck
ggrothendi...@gmail.com wrote:
On Tue, Sep 27, 2011 at 2:14 PM, David Garfield
garfi...@irving.iisd.sra.com wrote:
Any entry in a pipe could be buffering. In a quick test here, awk is
buffering. To find the buffering, try using the
On Tue, Sep 27, 2011 at 2:07 PM, Patrick Proniewski pat...@patpro.netwrote:
On 27 sept. 2011, at 20:18, Gabor Grothendieck wrote:
gawk has fflush()
none of them is available out of the box on Mac OS X, or FreeBSD. gawk can
be installed, but I'd rather use my while true loop instead of
On Fri, Aug 12, 2011 at 11:27 AM, john Papier johnpap...@gmail.com wrote:
I have a FTS3 table that was created with the simple tokenizer. I want to
change the tokenizer and reindex the table.
Is there a way to change the tokenizer in place and have it reindex with
minimal code?
Else the
On Thu, Aug 11, 2011 at 8:57 AM, Dennis Suehr den...@suehr.me.uk wrote:
After some digging through the sqlite3 source code, I came across the code
for the ICU tokenizer. After enabling that and then commenting out the one
line where u_foldCase() is called, i.e. icuOpen(), I retested and
On Fri, Jul 29, 2011 at 10:33 PM, Ray Van Dolson ra...@bludgeon.org wrote:
sqlite newbie here. I have a sqlite3 database that was built using the
FTS2 module. As such I get errors about the non-existent fts2 module
when attempting to query the data.
Is there a way to convert/migrate the
If the authorizer prevents PRAGMA, then fts3 fails with an SQLITE_AUTH
error from fts3DatabasePageSize().
http://crbug.com/85522 is the Chromium bug where this originated (I
upgraded the Chromium SQLite version a few weeks back).
http://codereview.chromium.org/7230021 is the short-term patch I'm
On Mon, Jun 6, 2011 at 1:46 PM, Nico Williams n...@cryptonector.com wrote:
I can see two ways to add proper IEEE754 support in a
backwards-compatible way: a) via a pragma to enable raising exceptions
or returning +-inf/NaNs, b) by adding a callback via which to report
such exceptions, with
On Tue, May 3, 2011 at 4:44 PM, Sugathan, Rupesh r...@carriercomm.com wrote:
I am planning to use sqlite on a Linux system with JFFS2 file system on
NAND flash. NAND device that I am using has page size of 2048 bytes and
a erase sector size of 128K. I would like to take advantage of sqlite
[From a thread about WAL checkpoints...]
On Wed, Mar 30, 2011 at 6:28 AM, Richard Hipp d...@sqlite.org wrote:
On Wed, Mar 30, 2011 at 8:46 AM, Mikael mikael@gmail.com wrote:
Therefore I now wish to check with you, is SQLite implemented to somehow
make checkpoints not be able to corrupt the
On Wed, Mar 16, 2011 at 12:15 PM, Travis Orr t...@ivl.com wrote:
Can someone enlighten me about this. To me a lot of the details appear
to be hidden since my main SongTable is a FTS3 virtual table.
You don't provide your schema, but based on your queries, I'll make
unwarranted assumptions :-).
On Tue, Mar 1, 2011 at 4:54 PM, Paul Shaffer sqli...@cyberplasm.com wrote:
I had an API problem, and I now think that the virtual table does not need
to be created each time. I can't find documentation that covers this.
I don't think there is documentation which covers this, because it's
how
I believe the key is used for attaching to encrypted databases.
-scott
On Wed, Feb 23, 2011 at 7:15 AM, Sam Carleton
scarle...@miltonstreet.com wrote:
Kevin,
Thank you, that is what I needed. Now to statisfy my curiosity... What
exactly is the KEY value?
On Tue, Feb 22, 2011 at 10:39
On Wed, Feb 23, 2011 at 12:50 PM, BareFeetWare
list@barefeetware.com wrote:
On 21/02/2011, at 8:11 AM, Scott Hess wrote:
You can also convert:
ATTACH DATABASE x AS y KEY z
to:
SELECT sqlite_attach(x, y, z)
where the parameters can be turned into bind arguments. Then embedded
quotes
You can also convert:
ATTACH DATABASE x AS y KEY z
to:
SELECT sqlite_attach(x, y, z)
where the parameters can be turned into bind arguments. Then embedded
quotes won't be an issue.
-scott
On Sun, Feb 20, 2011 at 11:31 AM, Pavel Ivanov paiva...@gmail.com wrote:
I believe doubling the
On Fri, Feb 18, 2011 at 12:08 AM, David M. Cotter m...@davecotter.com wrote:
so i am still left wondering if searching substrings is really any faster
using FTS.
You may want to search the archives, as this has come up before. I
don't recall if anyone had an inspired solution. You could
On Mon, Jan 31, 2011 at 9:15 AM, Samuel Adam a...@certifound.com wrote:
On Mon, 31 Jan 2011 11:46:21 -0500, Samuel Adam a...@certifound.com wrote:
On Mon, 31 Jan 2011 11:05:13 -0500, Simon Slavin slav...@bigfraud.org
wrote:
In the definition given in the original post, which I quoted, the
On Fri, Jan 21, 2011 at 5:33 PM, Pavel Ivanov paiva...@gmail.com wrote:
(2) Are there any changes that can/should be made
to sqlite3 so that it can identify the bogus journal in this
scenario and discard it?
Define the word bogus. How should SQLite understand that the journal
and the
On Wed, Jan 19, 2011 at 12:15 PM, Dustin Sallings dus...@spy.net wrote:
This isn't a question so much about value judgment (I've already
argued that some, though mentioning maintenance tools is helpful
there, too). It comes down to whether reliability of SQLite itself
would be reduced if a
On Mon, Dec 13, 2010 at 1:27 PM, Puneet Kishor punk.k...@gmail.com wrote:
Wols Lists wrote:
On 13/12/10 01:38, Darren Duncan wrote:
Darren Duncan wrote:
Wols Lists wrote:
Dunno how well that approach translates into a relational engine,
because Pick has several very non-relational quirks
On Fri, Dec 10, 2010 at 12:20 PM, Vander Clock Stephane
svandercl...@yahoo.fr wrote:
to limit the file fragmentation i want to increase the size of the
database file (with the windows API function).
Consider http://www.sqlite.org/c3ref/c_fcntl_chunk_size.html .
-scott
On Fri, Nov 12, 2010 at 5:50 AM, BareFeetWare list@barefeetware.com wrote:
IMO, if you're implementing database logic (ie constraints and triggers) in
application code, then you're reinventing the wheel, making your package
unnecessarily complex and grossly inefficient. If you're just using
On Sun, Oct 17, 2010 at 11:13 PM, Dami Laurent (PJ)
laurent.d...@justice.ge.ch wrote:
Is it possible to use FTS3 for search without storing the actual file
contents/search terms/keywords in a row. In other words, create a FTS3
tables with rows that only contains an ID and populate the B-Tree with
Having a table with an owner_id, key, and value, with a unique index
on (owner_id, key) will probably be more efficient than having a
separate table per owner. Also, it will be easier to code safely,
because bind parameters don't work on table names (I'm assuming you're
using dynamic table names
On Mon, Oct 11, 2010 at 8:13 AM, Jay A. Kreibich j...@kreibi.ch wrote:
On Mon, Oct 11, 2010 at 02:08:54PM +0200, Michele Pradella scratched on the
wall:
Ok so the main idea it's always the same: split the DELETE to make the
operation on less records, but do it more often.
Another thought
On Tue, Oct 12, 2010 at 8:40 AM, Drake Wilson dr...@begriffli.ch wrote:
Just to clarify, a trigger isn't useful for this in general, because
you still have nowhere to get the function pointer from. Above I was
worrying that the current SQLite code might be less safe than it could
be as a
On Wed, Sep 1, 2010 at 12:46 PM, Jay A. Kreibich j...@kreibi.ch wrote:
On Wed, Sep 01, 2010 at 11:41:00AM -0700, Taras Glek scratched on the wall:
Currently VACUUM takes care of sqlite-level fragmentation. Unfortunately
it does little for fs-level fragmentation since the same file is being
On Wed, Sep 1, 2010 at 10:09 PM, Max Vlasov max.vla...@gmail.com wrote:
I agree with Jay - while it is tempting to have SQLite bite off
optimizing this kind of thing, it's pretty far out of scope. Next
we'll be talking about running SQLite on raw partitions!
Scott, thought about it,
On Wed, Sep 1, 2010 at 10:20 PM, Max Vlasov max.vla...@gmail.com wrote:
I wonder whether it would be possible to extend the VFS in a way that would
make our use case possible (transferring a file handle over process
boundary). Please note that we do it on all platforms. On POSIX we pass an
I'm not sure Chromium has any fts1 databases, I think the original
patch was applied there for completeness.
The change from fts2 to fts3 has been made in the history system, but
it only applies to new data, and hasn't yet rolled out to stable. So
we wouldn't be able to even start to cease using
On Mon, Aug 16, 2010 at 7:58 PM, Shawn Wilsher m...@shawnwilsher.com wrote:
On Mon, Aug 16, 2010 at 5:13 PM, Paweł Hajdan, Jr. phajdan...@chromium.org
wrote:
Is it something you'd like to include in SQLite? If so, does the patch need
any adjustments before that's possible?
I'm slightly
This bug comment describes the problem:
http://code.google.com/p/chromium/issues/detail?id=15261#c20
excerpt:
Apparently the problem is caused by tolower(), whose behavior is affected by
current
locale. Under locale tr_TR.UTF-8, tolower('I') returns 'I' rather than 'i',
because
lower
On Thu, Aug 5, 2010 at 12:42 PM, Sam Roberts vieuxt...@gmail.com wrote:
FTS3 only searches full terms/words by default, but I think if I built a
custom
tokenizer that returned all the suffix trees for a name:
FTS3 can do prefix searches, MATCH 'a*'. Also, it aimed to support
multiple hits at
Hipp d...@sqlite.org wrote:
FTS3 updated here: http://www.sqlite.org/src/ci/b8b465ed2c
On Fri, Aug 6, 2010 at 2:24 PM, Scott Hess sh...@google.com wrote:
This bug comment describes the problem:
http://code.google.com/p/chromium/issues/detail?id=15261#c20
excerpt:
Apparently the problem
On Fri, Aug 6, 2010 at 6:08 PM, Sam Roberts vieuxt...@gmail.com wrote:
On Fri, Aug 6, 2010 at 11:32 AM, Scott Hess sh...@google.com wrote:
On Thu, Aug 5, 2010 at 12:42 PM, Sam Roberts vieuxt...@gmail.com wrote:
FTS3 only searches full terms/words by default, but I think if I built a
custom
Pawel,
You should probably pull the current SQLite code and make sure the
patch even applies, and if not, check to make sure that the problem
hasn't already been fixed. ext/fts3 should no longer have the flaw in
question, as that code was heavily rewritten. Chromium's SQLite was
last synced
On Mon, Aug 2, 2010 at 11:11 AM, Simon Slavin slav...@bigfraud.org wrote:
On 2 Aug 2010, at 7:06pm, Richard Hipp wrote:
Most of the slow queries seem to be SELECT count(*) FROM . Such
queries have to visit every row in the table (in order to count the rows)
and thus get progressively
[Sorry for the mis-fire.]
On Mon, Aug 2, 2010 at 11:11 AM, Simon Slavin slav...@bigfraud.org wrote:
On 2 Aug 2010, at 7:06pm, Richard Hipp wrote:
Most of the slow queries seem to be SELECT count(*) FROM . Such
queries have to visit every row in the table (in order to count the rows)
and
PM, Scott Hess wrote:
On Thu, Jul 29, 2010 at 10:05 PM, Dan Kennedy
danielk1...@gmail.com wrote:
On Jul 30, 2010, at 8:39 AM, Paweł Hajdan, Jr. wrote:
I'm attaching a suggested patch to verify number of arguments
in icuRegexpFunc. Please review it.
This is upstreaming of
http
On Thu, Jul 29, 2010 at 10:05 PM, Dan Kennedy danielk1...@gmail.com wrote:
On Jul 30, 2010, at 8:39 AM, Paweł Hajdan, Jr. wrote:
I'm attaching a suggested patch to verify number of arguments
in icuRegexpFunc. Please review it.
This is upstreaming of
On Tue, Jul 13, 2010 at 8:24 PM, Simon Slavin slav...@bigfraud.org wrote:
It might be useful to figure out whether we're aiming for
detection or correction. By 'correction' I don't mean recovery
of all information, I mean restoring the database to some state
it was in just after a COMMIT took
On Tue, Jul 13, 2010 at 10:03 PM, Scott Hess sh...@google.com wrote:
On Tue, Jul 13, 2010 at 8:24 PM, Simon Slavin slav...@bigfraud.org wrote:
It might be useful to figure out whether we're aiming for
detection or correction. By 'correction' I don't mean recovery
of all information, I mean
Eric,
You should reduce your demonstration case to something you'd be
willing to post the code for. Probably using synthetic data
(preferably generated data). There's something missing in the thread
right now, and it's unlikely to be exposed by random shots in the
dark.
-scott
On Tue, Jun
On Fri, Jun 18, 2010 at 5:24 PM, Eric Smith eas@gmail.com wrote:
Jay A. Kreibich wrote:
Yes. Hence the and this is the important part comment. Most of
the time when people are building billion-row files, they're building
a new DB by importing a static source of data. If things go
On Sat, Jun 5, 2010 at 10:29 AM, Han-Teng Liao hant...@gmail.com wrote:
I intend to use my existing datasets stored in sqlite3 database for some
linguistic analysis for Chinese language. After I have successfully
installed and run the FTS3 Extension and ICU Extension, I am curious whether
On Tue, Jun 1, 2010 at 2:37 PM, Simon Slavin slav...@bigfraud.org wrote:
On 1 Jun 2010, at 7:11pm, Israel Lins Albuquerque wrote:
About that future release functionality. Will be possible to know whats
temporary index are created?
Using that information will be easy to know what indexes we
On Wed, May 12, 2010 at 10:40 AM, Roger Binns rog...@rogerbinns.com wrote:
On 05/11/2010 11:50 AM, Matt Young wrote:
sqlite create virtual table if not exists words using fts3 (f1 );
Error: near not: syntax error
http://www.sqlite.org/cvstrac/tktview?tn=2604
To fix it requires code
On Fri, Apr 16, 2010 at 3:24 AM, Alexey Pechnikov
pechni...@mobigroup.ru wrote:
And you can use my patches for zlib-compression for FTS3. I'm planning to make
the fts3z extension because I want to use as original FTS3
as FTS3 with compression together.
Back when I was working up fts1, I
On Sun, Mar 14, 2010 at 5:18 PM, Jay A. Kreibich j...@kreibi.ch wrote:
On Sun, Mar 14, 2010 at 07:19:59PM -0400, Matthew L. Creech scratched on the
wall:
I have a SQLite database with one large table, and I'd like to shrink
the size of that table to free up space in the filesystem. My
On Mon, Mar 15, 2010 at 11:18 AM, Scott Hess sh...@google.com wrote:
AFAICT, the operation to copy the pages back _is_ journaled, and the
journal will get any pages which are overwritten in the front of the
main database. If the initial database has half of the pages used, it
seems like
On Tue, Mar 9, 2010 at 7:15 AM, Tim Romano tim.rom...@yahoo.com wrote:
Of these three:
select c from T where 1=2 // returns 0 rows
select min(c) from T where 1=2 // returns 1 row
select min(88,99) from T where 1=2 // returns 0 rows
the only case that threw me is the
On Tue, Mar 9, 2010 at 10:46 AM, Tim Romano tim.rom...@yahoo.com wrote:
On 3/9/2010 10:56 AM, Scott Hess wrote:
On Tue, Mar 9, 2010 at 7:15 AM, Tim Romanotim.rom...@yahoo.com wrote:
Of these three:
select c from T where 1=2 // returns 0 rows
select min(c) from T where 1=2
I can't speak to the question of whether it's a real problem, but I
bet you can work around with a sub-select. Something like:
select * from myfts where rowid = 1 OR rowid IN (select rowid from
myfts where (myfts MATCH 'one'));
-scott
On Wed, Mar 3, 2010 at 3:26 AM, Ralf Junker
On Tue, Mar 2, 2010 at 9:41 AM, Wilson, Ronald rwils...@harris.com wrote:
sqlite select * from test where text like '_';
from http://www.sqlite.org/lang_expr.html
An underscore (_) in the LIKE pattern matches any single character in the
string.
___
On Mon, Mar 1, 2010 at 2:44 PM, Jean-Christophe Deschamps j...@q-e-d.org
wrote:
The actual reason for the way NOT works as for now may be due to the
fact that negating a condition may cause the resulting set to be in
fact itself the union of two subsets.
Say the where condition K is col =
On Mon, Mar 1, 2010 at 3:12 PM, Jean-Christophe Deschamps j...@q-e-d.org
wrote:
NULL = 12345 is NULL, NOT NULL is NULL, so subset N is not part of NOT
(col = 12345).
You're right of course! (and I was even saying about nulls treated apart)
But, in your view, that the set can be
Actually, I think a new version of the tokenizer would have to be a
distinct tokenizer (ie, porter versus porter1 versus porter2,
whatever). fts4 should not interpret the meaning of an explicit
tokenizer differently from fts3, but it could use a different default
tokenizer.
[Don't take this as
On Sat, Feb 20, 2010 at 4:28 AM, Max Vlasov max.vla...@gmail.com wrote:
you mentioned full-text search.
I just tried to search for mentioning of sqlite3_interrupt in the sqlite
sources
The main is the implemention of the function itself that just sets the
isInterrupted variable:
void
As mentioned, don't use raw rowid, define a my_id INTEGER PRIMARY KEY
AUTOINCREMENT. This currently acts as an alias to rowid, but if the
implementation changes in the future, it will continue to work as
documented. So things will be correct, but they might not be as
efficient as before.
Since you're asking the question, it seems safe to assume that you
expect the table to have on the order of 2^32 values? And that you'll
be freeing up old values by deleting rows from the table?
First off, don't use rowid. Use my_id INTEGER PRIMARY KEY or
something like that. rowids are an
. As the tokens are not columns of the virtual table,
this syntax have to be different from general Select.
On Wed, Dec 23, 2009 at 8:51 PM, Scott Hess sh...@google.com wrote:
Doing this in the tokenizer is probably not great because you can't
determine which of the tokens actually
On Mon, Dec 28, 2009 at 8:19 PM, Dan Kennedy danielk1...@gmail.com wrote:
If you want the data for other purposes, you could almost implement a
hack to get is. For instance, SELECT count(docid) FROM fts_table
WHERE fts_table MATCH 'x'; is kind of close, and you could change the
match to
The tokens are all there, so it is theoretically possible. But the
performance would be very bad because it would require iterating over
all the segment data, basically a worst-case query. Even then, you
wouldn't have information about hit counts. To do it reasonably would
require redesigning
, non-exising
words (but ironically it would be helpful for collecting hit data). If we
know inside xNext that the call from a real data appending then at least we
will be able to maintain a dictionary of words used at least once.
Max
On Wed, Dec 23, 2009 at 5:54 PM, Scott Hess sh
Someone was asking me a question about what happens if the wrong
journal file gets applied to a database. My answer was that terrible
things happen.
I found myself wondering if the File change counter value is stored
in the journal (*). It would seem like a cheap(ish) way to give some
On Tue, Nov 3, 2009 at 9:12 PM, sorka sorka95...@gmail.com wrote:
Is there any way to have an intsert into an FTS3 table ignore a row if the
ROWID being inserted already exists? This is turning out to be quite
troublesome because I'm inserting thousands of records where just a few like
3 or 4
duplicates out of the hundreds of
records so it will always fail. For whatever reason, the delete, even though
it's just 2 or 3 records is taking 10 times longer than just the insert
alone where I can artificially make a case where there are no duplicates.
Scott Hess wrote:
My experience
fts3 columns are all implicitly TEXT, no matter how you dress them up.
There's already docid as a primary-key alias for rowid.
-scott
On Wed, Nov 4, 2009 at 11:03 AM, Simon Slavin slav...@bigfraud.org wrote:
On 4 Nov 2009, at 5:05pm, sorka wrote:
Hmm. Have you actually tried this yourself?
On Mon, Nov 2, 2009 at 3:56 PM, Shaun Seckman (Firaxis)
shaun.seck...@firaxis.com wrote:
The SQLite Consortium membership would be great but so far this
newsgroup has answered every single one of my questions within a 2 hour
window of posting..for free! (you guys frickin rock.) So SQLite
I did some tests with compression back when writing fts. I don't
recall if it was the fts1 time-frame or fts2 (which is mostly the same
as fts3). It didn't end up integrated into fts because zlib isn't
always available to SQLite.
Metadata is sorted and the deltas are encoded, so it's already
On Fri, Oct 30, 2009 at 7:14 AM, P Kishor punk.k...@gmail.com wrote:
Actually, there can be one bad effect of Darren's suggestion, now that
I think of it, and that would be for those who don't care for strong
typing. They will end up getting strong typing for all non-UNIVERSAL
columns whether
On Tue, Oct 27, 2009 at 9:35 PM, John Crenshaw johncrens...@priacta.com wrote:
Meh, I don't want it THAT badly. I'm just saying that's how it should
have been in the original design of the SQL language. In fact though, it
probably wouldn't have mattered. Every different RDBMS seems to treat
The bug was closed with cannot reproduce. So IMHO either the bug
should be re-opened with the provided repro case, or a new bug should
be opened with the provided repro case. Then, if the team decides
that this is works-as-designed, the team can close the bug with that
resolution.
When I
NULL is the logical lack of a value, and is not the same as some other
value EVERY SINGLE TIME. NULL is not equal to 1, NULL is not equal to
'one', NULL is also not equal to NULL. It's like NaN, except
not-a-value. When you join using equality (or comparison) on a column
which can have NULL
Sigh. That last sentence sounds confusing, I meant it literally, in
your where clause you tell the system how to deal with NULL cases
using IS NOT and IS NOT NULL.
-scott
On Fri, Oct 23, 2009 at 7:37 AM, Scott Hess sh...@google.com wrote:
NULL is the logical lack of a value
On Mon, Oct 19, 2009 at 11:25 AM, John Crenshaw
johncrens...@priacta.com wrote:
On the other hand, we could add a tree inside each segment to index the
doclist. The term would be looked up as normal at a cost of O(log nT).
After that though, if the docid is known, it could be looked up at an
Here's a long-ago thread on this:
http://www.mail-archive.com/sqlite-users@sqlite.org/msg30540.html
Looks like it hasn't been addressed, and I've yet to come up for air on it.
There's a ticket out there which looks like the same thing:
http://www.sqlite.org/cvstrac/tktview?tn=3338
which is
On Sat, Oct 17, 2009 at 1:25 PM, John Crenshaw johncrens...@priacta.com wrote:
Agreed, HUGE thanks for FTS. Hopefully my original post didn't
come off ungrateful. I was just confused by limitations that
looked like they could have been removed during the initial
design (at least more easily
Your analysis is correct.
One way this is often fixed in full-text-search systems is to keep
index stats so that the more specific bits of the query can come
first. In this case, nicky AND nigel gives you a small enough
result set that it would be more efficient to scan the matched
documents for
Not to be flippant, but how could SQLite optimize for the output of a
custom function you define outside of SQLite? It can't possibly know
anything about how IS_MY_BIRTHDAY() works. Your function could return
1 for every single row, or for no rows at all, without regard to
whether you're passing
Since SQLite is an embedded database, it generally does not pay to
count statements, unless they add additional disk I/O. You can code
like this:
BEGIN
SELECT ...
if (select results A)
INSERT ...
else
UPDATE ...
END
and it will be about as fast as either the INSERT
On Wed, Sep 30, 2009 at 7:13 AM, Pavel Ivanov paiva...@gmail.com wrote:
Well, assuming that your
SELECT is selecting the rows you mean to UPDATE or INSERT ...
Also assuming that
- all data necessary for these statements can fit into sqlite's cache;
Generally the desire to
On Wed, Sep 30, 2009 at 11:58 AM, Sam Carleton scarle...@gmail.com wrote:
On Wed, Sep 30, 2009 at 10:02 AM, Scott Hess sh...@google.com wrote:
Since SQLite is an embedded database, it generally does not pay to
count statements, unless they add additional disk I/O. You can code
like
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