This is a perl question really, so apologies to the SQLite community.
However, I am stuck, and I am flailing on various forums
(perlmonks/stackoverflow), hoping to strike lucky. My problem is that
I am running into the "database locked" error under mod_perl with
Apache2. I thought I had surmounted
I'm trying to get SQLite working in my C++ project via a DLL, but I"m
getting unresolved external symbol errors.
I downloaded SQLiteDLL-3 from the download page, extracted its contents (a
DLL and a .h file), and ran lib.exe on it to produce a .lib file. I then set
the directory containing the .lib
Quoth Travis Orr , on 2010-10-08 13:37:25 -0700:
> Is it possible to register a custom FTS3 tokenizer to be persistent in
> the database so that it is available every time a connection is opened?
Not really. How would this work? You open a database, and the
function pointer for the tokenizer com
Hi Igor
I'm converting an Interbase DB for use in a smaller application, so there are
many different examples.
I've included one particular example below, where I have converted a single
Interbase trigger (which used IF statements), into 4 separate SQLite triggers.
Any advice appreciated.Russell
On Fri, Oct 08, 2010 at 05:49:18PM +0100, Simon Slavin wrote:
> On 8 Oct 2010, at 5:48pm, Stephan Wehner wrote:
> > On Fri, Oct 8, 2010 at 7:14 AM, Michele Pradella
> > wrote:
> >> "science fiction?" was a rhetorically question. I'm only wondering
> >> about what is the best and fastest way to DE
Is it possible to register a custom FTS3 tokenizer to be persistent in
the database so that it is available every time a connection is opened?
Or do I need to reregister the tokenizer every time I open a new
connection to the database?
Thanks
Travis Orr
IVL Audio Inc
#3-6703 Rajpur Pla
Thank you. Those changes (modified slightly for 3.7.2) allowed me to
create a DKM project that compiles sqlite3.c to libSQLite3.a.
However, when I link my main VIP project, I get the following unresolved
errors:
dld: warning: Undefined symbol 'rtpVerifyAndLock' in file 'partialImage.o'
dld: war
On Fri, Oct 8, 2010 at 9:49 AM, Simon Slavin wrote:
>
> On 8 Oct 2010, at 5:48pm, Stephan Wehner wrote:
>
>> On Fri, Oct 8, 2010 at 7:14 AM, Michele Pradella
>> wrote:
>>> "science fiction?" was a rhetorically question. I'm only wondering
>>> about what is the best and fastest way to DELETE a lo
On 8 Oct 2010, at 5:48pm, Stephan Wehner wrote:
> On Fri, Oct 8, 2010 at 7:14 AM, Michele Pradella
> wrote:
>> "science fiction?" was a rhetorically question. I'm only wondering
>> about what is the best and fastest way to DELETE a lot of records from
>> huge DB. I know and understand physical
On Fri, Oct 8, 2010 at 7:14 AM, Michele Pradella
wrote:
> "science fiction?" was a rhetorically question. I'm only wondering
> about what is the best and fastest way to DELETE a lot of records from
> huge DB. I know and understand physical limit of data moving: anyway for
> now I'm trying to spli
On Oct 8, 2010, at 9:44 PM, Raj, Praveen wrote:
> Hello,
>
> I debugged the SQLite functions and here is my finding:
>
> The call to "mmap" in the function "unixShmMap" is causing the issue.
> void *pMem = mmap(0, szRegion, PROT_READ|PROT_WRITE,
> MAP_SHARED, pShmNode->h, iRegion*szRegio
According to the QNX mmap page
http://www.qnx.com/developers/docs/6.3.0SP3/neutrino/lib_ref/m/mmap.html
MAP_NOINIT
When specified, the POSIX requirement that the memory be zeroed is relaxed. The
physical memory being used for this allocation must have been previously freed
with UNMAP_INIT_OPTIO
You'll get this if your .DEF file includes any APIs that are not
compiled into your build.
A few sources are:
SQLITE_OMIT_LOAD_EXTENSION=1
SQLITE_ENABLE_COLUMN_METADATA=1
SQLITE_ENABLE_STAT2=1
SQLITE_ENABLE_FTS3=1
SQLITE_ENABLE_RTREE=1
Depending on how you're compiling, you have a couple of optio
On Fri, Oct 8, 2010 at 15:28, sjtirtha wrote:
> 1. setup an development environment for SQLite (I'm using Ubuntu)
>Do you have any preference which editor or IDE should I use?
It's very easy. Download the sources, compile the "standard" way
(./configure; make). Any editor is fine.
_
Hello,
I debugged the SQLite functions and here is my finding:
The call to "mmap" in the function "unixShmMap" is causing the issue.
void *pMem = mmap(0, szRegion, PROT_READ|PROT_WRITE,
MAP_SHARED, pShmNode->h, iRegion*szRegion);
It is setting the previous memory region/regions to zero
On Thu, Oct 7, 2010 at 5:26 PM, sjtirtha wrote:
> Hi,
>
> I'm interested involving in sqlite development.
> How can I start it?
>
If I can add to this question is there a posted wishlist,
todo list or roadmap?
Something like this:
http://www.h2database.com/html/roadmap.html
--
Statistics & Sof
"science fiction?" was a rhetorically question. I'm only wondering
about what is the best and fastest way to DELETE a lot of records from
huge DB. I know and understand physical limit of data moving: anyway for
now I'm trying to split the BIG DELETE in some smaller DELETE to spread
the time u
On 8 Oct 2010, at 2:28pm, sjtirtha wrote:
> I do not have really C programming experience. But I have 8 years
> programming experience in
> several languages: PHP, JavaScript, Java, C++, ABAP
> And I'm willing to learn C.
Of all of those, if you can run Apache, the easiest one for you to start w
Hi,
Thanks Dan, Richard and Max for the (ultra) fast answer and Dan and
Richard for the fix, because, as Max says, the bug is fixed now in
3.7.3.
But I have a problem compiling sqlite with VC++. I was able to compile
3.7.2 without issues.
With 3.7.3 The linker says:
'error LNK2001: unresolved e
On Fri, Oct 08, 2010 at 09:09:09AM +0200, Michele Pradella scratched on the
wall:
> I was thinking this too, but I take this for last chance: my hope is I
> can delete 5 millions of records in few seconds, science fiction? :)
Science fiction of the worst B-grade sort.
Think about the numb
why don't you start with...
On Fri, Oct 8, 2010 at 8:28 AM, sjtirtha wrote:
> Hi,
>
> Here is what I want to do:
> 1. I want to learn more about SQL Database implementation
the above. You will be quite busy doing the above. When you are good
at the above, you can definitely contribute back by h
Hi,
Here is what I want to do:
1. I want to learn more about SQL Database implementation
2. During the learn I want to give back what I get to the community
I do not have really C programming experience. But I have 8 years
programming experience in
several languages: PHP, JavaScript, Java, C++, A
Russell A wrote:
> This may be a really dumb question, but I've searched and can't find an
> answer.
> Do SQLite triggers support any conditional expressions, like IF, or is there
> only the WHEN statement? If the latter, does that
> mean that multiple conditions must be in separate triggers? An
On Thu, Oct 7, 2010 at 8:05 PM, Michele Pradella wrote:
> Hi all, I have a question about how to speed up a DELETE statement.
> I have a DB of about 3GB: the DB has about 23 millions of records.
> The DB is indexed by a DateTime column (is a 64 bit integer), and
> suppose you want to delete all
On Fri, Oct 8, 2010 at 2:55 AM, Paweł Salawa wrote:
> Hi,
>
> I mentioned the problem before but it seems to be ignored for now. I'd
> really appreciate some response, at least confirmation or denial that
> I'm right about the problem.
>
>
You are correct - duplicate column names means that the
Rather than doing batch deletes why don't you add a date/time constraint to
your selects?
Then, you can have a thread which does a lazy delete on the old data. Or, you
can create a trigger on inserts which deletes anything older than N-days or
such.
Or...if all you want is an interruptable
Hello Scott,
Below is my patch on the latest SQLite 3.7.3. Please notice that I only
verify it with GCC 4.1.2 compiler in VxWorks 6.6/6.7/6.8(I have not verify
it with my real target machine yet).
*** sqlite3.c.orig2010-10-08 10:42:22.0 +0800
--- sqlite3.c2010-10-08 19:24:18.3
On a field by field basis:
CASE..WHEN [condition 1]..THEN [result 1]..WHEN [condition n]..THEN
[result n]..ELSE..END
- Original Message -
From: "Russell A"
To:
Sent: Friday, October 08, 2010 01:24 a
Subject: [sqlite] Confitional IF in triggers
This may be a really dumb question,
I try 32 and it takes same time. Moreover the RAM used is about 500MB
Even with "PRAGMA synchronous = OFF;" operation time is the same.
I think the only way for now is to make more DELETE with less element,
but it's not the best way
Il 08/10/2010 10.41, Marcus Grimm ha scritto:
> Michele P
DELETE on PrimaryKey instead of DateTime index takes same time
Il 08/10/2010 10.30, Michele Pradella ha scritto:
>ok I'll try with 3.7.3
> DELETE is a little bit faster, and the -wal is reintegrated when I close
> the connection.
> Changing cache_size (I try 1) DELETE takes same time to
Michele Pradella wrote:
> ok I'll try with 3.7.3
> DELETE is a little bit faster, and the -wal is reintegrated when I close
> the connection.
> Changing cache_size (I try 1) DELETE takes same time to complete.
1 doesn't sounds very big, I used to define it to e.g. 32 instead when
w
ok I'll try with 3.7.3
DELETE is a little bit faster, and the -wal is reintegrated when I close
the connection.
Changing cache_size (I try 1) DELETE takes same time to complete.
Was my fault, because to close the shell connection I used Ctrl+C but
this leave the -wal file. If I close with .
joshua wojnas writes:
>
> how do I load a csv file or what is the simplest text file to load
> into sqlite3?
1. sqlite3 yoursqlitedatabasename
2. .import yourtextfile yourtablename (see .h for documentation)
ready
but what you need is:
- an existing sqlitedb (step1 already creates the db)
I'll try to increase cache size, and I'll try operation on my Db with
the 3.7.3 anyway I already ported the Fix of the WAL issue from recent
snapshot. I'll try and let you know
Il 08/10/2010 9.52, Marcus Grimm ha scritto:
> Michele Pradella wrote:
>>As I explain in previews email, I think
Michele Pradella wrote:
> As I explain in previews email, I think that recreating the index is
> the slowest operation I can do on my DB.
> Anyway in my first email I ask another question about -wal file
> Tryin to DELETE the (5 millions) records with the shell SQLITE interface
> I can see the
I was thinking this too, but I take this for last chance: my hope is I
can delete 5 millions of records in few seconds, science fiction? :)
Il 08/10/2010 9.00, Aldes Rossi ha scritto:
>Il 10/08/2010 08:30 AM, Michele Pradella ha scritto:
>> I don't know if could be faster to do more Delete
Il 10/08/2010 08:30 AM, Michele Pradella ha scritto:
> I don't know if could be faster to do more Delete of less records, or
> perhaps making a VIEW and than deleting all the records matching the
> VIEW. I'm thinking about this to find the fastest solution, because the
> problem is that when sqli
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