This is not a simple tool. I is primarily designed to be embedded in
applications. Your opinion about the quality of the *install* instructions
leads people to believe that you may need a better understanding of the
skill level required to use Sqlite.
On Wed, Jul 22, 2009 at 1:43 PM, scabral wrot
On 23 Jul 2009, at 2:20am, Jim Showalter wrote:
> The query looks like this:
>
> select distinct * from tbl where a <> 0 order by a desc, b desc, c
> desc, d desc limit 2;
>
> where a, b, c, and d are all type INTEGER.
To add to Igor's point, how much use an index is varies depending on
how ma
Jim Showalter wrote:
> What is the overhead in O notation for adding an index to a column in
> SQLite?
You mean size overhead? O(n): the index is basically just another table
(usually with fewer columns than the original). There's one record in
the index for every record in the underlying table
I have everything working now, and am just tidying up. I want to add
indexes, if needed, but this is for a cellphone app, and I'm worried
about using up space, particularly when the data is unlikely to be
more than a couple thousand rows in total. But there is a query that
might be slow without
I believe that one poster (Rich Shepard?) touched upon the MDB-Tools in a
response. I concur, if you have the skills to build these tools from
source, the rest is easy ...
The MDB Tools project hosted on SourceForge has a set of utilities which
can enumerate tables, pull data, and schema info
Simon Slavin wrote:
>On 22 Jul 2009, at 12:40am, Steve Martin wrote:
>
>
>
>>$ fred testdb "create table bob(p1 text PRIMARY KEY, p2 text)"
>>SQLITE_DONE: 101 : unknown error
>>
>>
>
>You do know this, and all your subsequent commands, will fail if you
>still have your data in here from th
i don't get it...
Nuno Magalhães-2 wrote:
>
> On Wed, Jul 22, 2009 at 21:30, scabral wrote:
>
> [...]
>
>> the instructions on the SQLite website are pretty crappy to say the
>> least.
>> When i download the zip file, all i get is 3 txt files???
>
> [...]
>
> Oh... a troll.
> _
On Wed, 22 Jul 2009, scabral wrote:
> When i download the sqlite-amalgamation-3_6_16.zip i get 3 text files:
>
> sqlite3 C File
> sqlite3 H File
> sqlite3ext H File
> what am i supposed to do with those?
Well, based on what others wrote about your initial comments, I suggest
that you repl
On Wed, 22 Jul 2009, scabral wrote:
> does someone have 'good' instructions on what i need and how i need to
> install SQLite on Windows XP?
Scott,
I don't do Windows; haven't for more than a dozen years. However, it
doesn't look too hard.
> the instructions on the SQLite website are pretty
Not in the InstallShield/MSI format that I imagine you're looking
for no. But that's the whole point, really.
See the "Precompiled Binaries" section of the download page.
You'll find what you need (if not necessarily what you're looking for)
there.
-T
On Wed, Jul 22, 2009 at 4:42 PM, s
On Wed, Jul 22, 2009 at 01:30:58PM -0700, scabral wrote:
>
> Hi,
>
> does someone have 'good' instructions on what i need and how i need to
> install SQLite on Windows XP?
>
> I eventually want to create a desktop application to run on SQLite, but not
> sure what language i want to use yet (pythong
On Wed, Jul 22, 2009 at 3:42 PM, scabral wrote:
>
> When i download the sqlite-amalgamation-3_6_16.zip i get 3 text files:
>
> sqlite3 C File
> sqlite3 H File
> sqlite3ext H File
>
> what am i supposed to do with those?
>
> Is there no 'true' install?
Read that entire page carefully before cli
When i download the sqlite-amalgamation-3_6_16.zip i get 3 text files:
sqlite3 C File
sqlite3 H File
sqlite3ext H File
what am i supposed to do with those?
Is there no 'true' install?
Scott
P Kishor-3 wrote:
>
> On Wed, Jul 22, 2009 at 3:30 PM, scabral wrote:
>>
>> Hi,
>>
>> does someone
Zachary Turner
wrote:
> I still don't understand the transactions. For example, I issue a
> single BEGIN at the start of my application and then insert about
> 500MB of data through many small inserts (about 4KB each). During
> this whole time I never issue a commit. But the main db file grows
On Wed, Jul 22, 2009 at 3:30 PM, scabral wrote:
>
> Hi,
>
> does someone have 'good' instructions on what i need and how i need to
> install SQLite on Windows XP?
>
> I eventually want to create a desktop application to run on SQLite, but not
> sure what language i want to use yet (pythong, ruby, e
On Wed, Jul 22, 2009 at 21:30, scabral wrote:
[...]
> the instructions on the SQLite website are pretty crappy to say the least.
> When i download the zip file, all i get is 3 txt files???
[...]
Oh... a troll.
___
sqlite-users mailing list
sqlite-user
Hi,
does someone have 'good' instructions on what i need and how i need to
install SQLite on Windows XP?
I eventually want to create a desktop application to run on SQLite, but not
sure what language i want to use yet (pythong, ruby, etc...)
the instructions on the SQLite website are pretty c
On 22 Jul 2009, at 6:29pm, scabral wrote:
> The OS is Windows XP. I know some VB script, some pearl and i'v
> used Visual
> VB and C# as well.
Post on programming fora about VB (I assume you mean Visual Basic)
(whichever version you're using) about accessing SQLite databases.
They'll tel
On Wed, Jul 22, 2009 at 1:42 PM, Pavel Ivanov wrote:
>
> Again, try to call sqlite3_memory_used() several times during work of
> your application. What does it say to you?
It says it's using about 3MB. Which suggests maybe it's my application.
I believe I've identified the problem in my code but
Robert Citek wrote:
> Anyone know of a way to preview the index, the table of contest, or
> some sample chapters? I tried viewing form the Lulu site, but no
> luck.
It appears it has not been scanned by Google yet. However a limited
preview of the other book "The Definite Guide to SQLite" can be
> Assuming I don't do any manual commits, what does sqlite do with the
> data that has yet to be committed?
If you don't do commits (and "begins") of transactions by yourself
then SQLite does that automatically after each executed statement. So
when sqlite3_step returns you can be sure that everyt
On Wed, Jul 22, 2009 at 10:47 AM, Pavel Ivanov wrote:
> SQLite synchronizes with disk during every commit (either issued by
> yourself or automatic) at least 2 times (I don't know exact number).
> So it's quite natural that it spends most of the time in winSync().
> But I still didn't understand fr
Thanks Simon for detail explaination about the indexes!
JP
From: Simon Slavin
To: General Discussion of SQLite Database
Sent: Tuesday, July 21, 2009 3:57:22 PM
Subject: Re: [sqlite] Indexes on the table
On 21 Jul 2009, at 11:12pm, Joanne Pham wrote:
> CREAT
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Since the solution is now specific to Python, I suggest continuing on
the pysqlite/APSW mailing list -
http://itsystementwicklung.de/cgi-bin/mailman/listinfo/list-pysqlite and
http://news.gmane.org/gmane.comp.python.db.pysqlite.user
Le Hyaric Bruno wr
I would recommend Talend (http://www.talend.com/). It allows for
export/import to/from almost any structured data source (including sqlite
and Access) and has very good scripting capabilities (a visual designer
which generates java or perl code). It doesn't have a scheduler but this may
be managed
On Wed, 22 Jul 2009, scabral wrote:
> The OS is Windows XP. I know some VB script, some pearl and i'v used Visual
> VB and C# as well.
>
> I was thinking that the script would called from a windows scheduled task
> and the script would then import the text file into the table in
> SQLite...Sounds
The OS is Windows XP. I know some VB script, some pearl and i'v used Visual
VB and C# as well.
I was thinking that the script would called from a windows scheduled task
and the script would then import the text file into the table in
SQLite...Sounds easy, but i'm not sure what's available to cre
On 22 Jul 2009, at 5:34pm, scabral wrote:
> 1. Need to automatically import text file into SQLite database on
> local
> machine (machine always on). I was thinking of using scheduled task
> to run
> a script to do this, but not sure if that is possible.
What programming languages or script
On Wed, 22 Jul 2009, scabral wrote:
> i am new to SQLite and i currently have an access database that i would like
> to convert over to a SQLite database.
>
> 1. Need to automatically import text file into SQLite database on local
> machine (machine always on). I was thinking of using scheduled
On Wed, Jul 22, 2009 at 12:12 PM, scabral wrote:
>
> Do you know of any third party applications that i could use to build the
> front end? This will need to run on local machines, not on servers. So,
> some sort of desktop application i would imagine
Applications that build applications? I
On Wed, 22 Jul 2009, scabral wrote:
> Do you know of any third party applications that i could use to build the
> front end? This will need to run on local machines, not on servers. So,
> some sort of desktop application i would imagine
Scott,
Each language has its own. However, from yo
> Do you know of any third party applications that i could use to build the
> front end? This will need to run on local machines, not on servers. So,
> some sort of desktop application i would imagine
That would be OS-dependent now, wouldn't it? Unless you're going to
use Java or PHP or simi
Do you know of any third party applications that i could use to build the
front end? This will need to run on local machines, not on servers. So,
some sort of desktop application i would imagine
thanks
Scott
P Kishor-3 wrote:
>
> On Wed, Jul 22, 2009 at 11:34 AM, scabral wrote:
>>
>> HI,
On Wed, 22 Jul 2009, P Kishor wrote:
> Sure it is possible. You will have to choose your favorite programming
> language, write a program to locate and import the local text file, and
> set up a scheduler to do so periodically.
> Lots of third-party applications. You might end up writing your own
On Wed, Jul 22, 2009 at 11:34 AM, scabral wrote:
>
> HI,
>
> i am new to SQLite and i currently have an access database that i would like
> to convert over to a SQLite database.
>
> there are a couple of processes that would need to take place in order for
> this to work and i'm not sure if SQLite
HI,
i am new to SQLite and i currently have an access database that i would like
to convert over to a SQLite database.
there are a couple of processes that would need to take place in order for
this to work and i'm not sure if SQLite has these capabilities:
1. Need to automatically import text
just a point:
In your pseudocode you precreate statements for the
begin and commit and trying to reuse them later on.
If your real code is like this I would suggest to
take a look at this. I think it is not possible
to "re-step" a begin or commit, you may try to
recreate these statements completely
SQLite synchronizes with disk during every commit (either issued by
yourself or automatic) at least 2 times (I don't know exact number).
So it's quite natural that it spends most of the time in winSync().
But I still didn't understand from your explanation how exactly your
application works and whe
On Tue, Jul 21, 2009 at 6:45 PM, Pavel Ivanov wrote:
>> If I remove or comment out the
>> three lines with //* in the code above, I get no memory leaks.
>
> So basically you're saying that if you don't insert any data into your
> database and thus effectively don't do with your database anything an
On 22 Jul 2009, at 12:40am, Steve Martin wrote:
> $ fred testdb "create table bob(p1 text PRIMARY KEY, p2 text)"
> SQLITE_DONE: 101 : unknown error
You do know this, and all your subsequent commands, will fail if you
still have your data in here from the last test, don't you ?
Simon.
Hi thanks again Igor,
I've successfully use sqlite3 on a quite real volume of data with custom
bitwise functions for data selection.
Here is the script Python 2.5 that serves as a proof of concept :
import os
import sqlite3
def blob_and(b1,b2):
op1 = str(b1)
op2 = str(b2)
i = 0
Hi List,
I am new to sqlite and having trouble determining if an update has worked.
I am using the C/C++ API.
For an update, when sqlite3_step is executed it returns SQLITE_DONE when
a record is updated or if a record does not exist. I have not found an
answer by reading and searching the do
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