No idea? Or have you just missed this email accidentially?
Cheers,
Jonas
Jonas Truemper schrieb:
> Hello everybody,
>
> we are using SQLite with in-memory tables to speed up importing of data
> into persistent tables. We therefore clone the persistent table's
> structure by querying the
Thomas Briggs wrote:
>Ultimately it'll depend on your schema and the query you're
> running, but you're probably better off creating an index that covers
> the SELECT query you're executing. That should make the query fast
> and save you the hassle of writing and maintaining triggers.
>
>
> Speedup tip:
> http://article.gmane.org/gmane.comp.db.sqlite.general/41990
>
Hello Mike,
first of all, thank you for your tips.
Yes, i saw that posting, and i am already using it in my code.
But thanks again,
--
Christophe Leske
www.multimedial.de - [EMAIL PROTECTED]
Hello
I have a list of books in an SQLite database. I'd like to rewrite the
Price column so that:
1. When it says "US$ 1.12", turn this into "$ 1.12"
2. When it says nothing, the currency is actually in Euros, and
rewrite this as "10,19".
Can SQLite do this, or should I write a script to
PennyH <[EMAIL PROTECTED]> writes:
>
>
> Thank you MikeW. I try to use transaction, still slow. Use limit clause is
> good idea, but the help is limited. Dose number of index affect speed too?
> How many index on one table is better?
>
> Regards,
>
> Penny
>
I don't know about the effect of
Gilles Ganault <[EMAIL PROTECTED]> writes:
>
> Hello
>
> I have a list of books in an SQLite database. I'd like to rewrite the
> Price column so that:
> 1. When it says "US$ 1.12", turn this into "$ 1.12"
> 2. When it says nothing, the currency is actually in Euros, and
> rewrite this as
At 13:47 15/10/2008, you wrote:
>Hi there,
>
>i am using a 120MB database in an embedded project (a DVD-ROM project)
>and was wondering what I can do to speed up its reading using diverse
>PRAGMA statements.
>The database is locked, meaning that no data is being inserted or
>deleted from it. I am
> How many memory has your embedded project? You can create a new
> in-memory database and copy there your database data.
>
That´s what i am currently doing, but we are using too much memory this
way, we are out of specs.
--
Christophe Leske
www.multimedial.de - [EMAIL PROTECTED]
"Gilles Ganault" <[EMAIL PROTECTED]> wrote in
message news:[EMAIL PROTECTED]
> I'd like to rewrite the
> Price column so that:
> 1. When it says "US$ 1.12", turn this into "$ 1.12"
> 2. When it says nothing, the currency is actually in Euros, and
> rewrite this as "?10,19".
What do you mean
Hello,
Currently, we are using lucene to do full-text search (may be we will switch to
FTS3).
And we inject all the ids returned by lucene in prepared statements to load the
data.
But we have to check that the ids collection size is not greater than
SQLITE_MAX_VARIABLE_NUMBER
(999 by default)
Hi All
I have a program which is used to display a lot (=1) of JPEG2000
images. The size is about 25KB.
Using a NTFS filesystem gives quite slow loading speed, thus I decided
to test sqlite. The reading of images is very impressing and much
faster than NTFS :-)
However, when I write the
"Jørgen Berntsen"
<[EMAIL PROTECTED]> wrote in
message news:[EMAIL PROTECTED]
> However, when I write the images to the database everything is very
> slow and writing 1 BLOBs takes about 20-30 minutes. As our users
> is not that pacient they currently will not use this approach!
Wrap all
On 10/24/08, yhuang <[EMAIL PROTECTED]> wrote:
> I create a DB and only one table in the DB. There are 3641043 records in the
> DB file. Min id is 27081364, Max id is 30902585.
>
> I did follow operation:
>
> sqlite> delete from XXX where userId>3090 and userId<30902000;
>
> took 1'32''
>
How much slower is the index than your pre-populated table? If
you're really comparing apples to apples it would be good to know how
big the different is.
If you post your schema and queries you'll probably get better
advice. At that this I'm just guessing.
-T
On Tue, Oct 28, 2008
Thomas Briggs wrote:
>How much slower is the index than your pre-populated table? If
> you're really comparing apples to apples it would be good to know how
> big the different is.
>
>If you post your schema and queries you'll probably get better
> advice. At that this I'm just guessing.
If you're really sure that the index is correctly designed (WHERE
criteria first, covers all SELECT columns, etc.) I won't argue with
you.
If you do decide to go the table-scanning route, one thing that
might speed things up for you is increasing your block size. Larger
blocks means fewer
Hey MikeW,
The article you posted seems like something I might want to try. I am
currently using JDBC to embed sqlite in my java app. Do you know if there
are equivalent statements for java?
Please let me know if you do.
Thanks,
Julian
On Mon, Oct 27, 2008 at 7:58 AM, MikeW <[EMAIL
I'm no expert, but I believe I recall reading on one of the SQLite
docs that the performance of Joins can be a bit slower than on other
DB systems. Seeing as you have a couple of tables being joined, this
could be the case. I also think I recall reading some posts in this
list about people
Am I correct in understanding sqlite3_total_changes() doesn't include
changes to the "master" tables, and thus won't reflect schema changes?
If so, is there any general way to determine -- given an arbitrary query
-- whether or not it changed the database?
Basically, I'm creating a replay log
David Barrett <[EMAIL PROTECTED]> wrote:
> If so, is there any general way to determine -- given an arbitrary
> query -- whether or not it changed the database?
Run PRAGMA schema_version before and after.
Igor Tandetnik
___
sqlite-users mailing
I'm running into an odd problem on Windows Vista relating to permissions.
I've got a small (77 KB) sqlite DB owned by Administrator. When I access it
as Administrator, everything works fine. If I try to access it as a normal
user... things get funky. This is what I observe using the sqlite
On Oct 28, 2008, at 5:25 PM, Daniel Stutzbach wrote:
> I'm running into an odd problem on Windows Vista relating to
> permissions.
> I've got a small (77 KB) sqlite DB owned by Administrator. When I
> access it
> as Administrator, everything works fine. If I try to access it as a
>
Daniel Stutzbach
<[EMAIL PROTECTED]> wrote:
> I'm running into an odd problem on Windows Vista relating to
> permissions. I've got a small (77 KB) sqlite DB owned by
> Administrator. When I access it as Administrator, everything works
> fine. If I try to access it as a normal user... things get
On Tue, Oct 28, 2008 at 4:34 PM, Igor Tandetnik <[EMAIL PROTECTED]> wrote:
> Which folder is the database file in? Thanks to Vista file
> virtualization, you are probably looking at a different file altogether.
> See
>
Yep, that was it. My application (running as a normal user) tried to write
Hello,
I'm trying to use hexadecimal numbers in a where clause and it
seems things aren't quite working as expected. I get unknown token
errors or inequalities don't return the correct answer.
I have one value set:
sqlite> SELECT HEX(minMAC) FROM manifests;
00C1
Clay Baenziger <[EMAIL PROTECTED]> wrote:
> Let's try a small number:
> sqlite> SELECT HEX(minMAC) FROM manifests WHERE minMAC <= X'04';
> 00C1
> [Wrong -- x'04' < x'00C1']
Blobs are not compared as if they are very large integers, but rather
lexicographically, byte by byte (the
Greetings!
I have two tables:
CREATE TABLE X
(
login primary key,
Name,
Password,
...,
ProjOwned
);
CREATE TABLE Y
jose isaias cabrera <[EMAIL PROTECTED]>
wrote:
> I have two tables:
>
> CREATE TABLE X
> (
> login primary key,
> Name,
> Password,
> ...,
> ProjOwned
>
Hi José,
> I have two tables:
>
> CREATE TABLE X
>(
>login primary key,
>Name,
>Password,
>...,
>ProjOwned
>);
>
>
> CREATE TABLE Y
>
thanks, BareFeet. I will give this a try tomorrow.
Igor,
I tried to reply to your email, but somehow, I can not reply to newsgroup.
Weird. But, the relationship is login.
thanks,
josé
> - Original Message -
> From: "BareFeet" <[EMAIL PROTECTED]>
> To: "General Discussion of
On 10/28/08, jose isaias cabrera <[EMAIL PROTECTED]> wrote:
>
> thanks, BareFeet. I will give this a try tomorrow.
>
> Igor,
>
> I tried to reply to your email, but somehow, I can not reply to newsgroup.
> Weird. But, the relationship is login.
If the relationship is X.login = Y.login where
In reply to:
> If the relationship is X.login = Y.login where each is a primary key
> in the respective table then you should really reconsider the
> structure of your db... they really should be one table.
That's only true if every record/row in table X has a corresponding
record/row in table
> In reply to:
>
>> If the relationship is X.login = Y.login where each is a primary key
>> in the respective table then you should really reconsider the
>> structure of your db... they really should be one table.
>
> That's only true if every record/row in table X has a corresponding
>
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