Itzchak Raiskin wrote:
> Hi
> I want to use SQLite in a GIS application where I create a database
> containing terrain data (coordinates, height).
> I would like to query this database with start and end points of a line and
> get a vector with all heights point along this line.
> I can, of course
Here is a relational model that I use for my genealogy. It is in
postgresql, but it should work fine in SQLite:
All people are stored in the indi table:
CREATE TABLE woodbridge.indi
(
indi character varying(10) NOT NULL,
lname character varying(30),
fname character varying(60),
Oyvind Idland wrote:
> Thanks for responses :)
>
> Whereby "objects" you mean "rows," no? You are getting upward of 5500
>> sustained inserts per second. That sounds pretty good. That said, are
>> you using transactions? See what difference that makes.
>>
>
> Yep, I meant rows. Inserting rows in
Oyvind Idland wrote:
> Hi,
>
> I am fiddling around with the r-tree module a bit, which works great and
> gives the effect I am looking for.
>
> The only thing is that I wish I could speed up inserts. Populating the
> rtree-index with 1 million objects
> takes about 180 seconds (using prepared
James,
I'm not sure I can answer your questions about speed issues other than
to suggest the you read up on the rtree index which is designed for this
type of query and should be extremely fast.
-Steve
James Pringle wrote:
> Hi-
>
> I am new to sqlite, and am having a puzzling problem. I
I think that the problem is with your understanding of what the
.databases command does. I could be mistaken, but I thought is only
listed attached databases. It is not a command to search for possible
databases that may exist on your file system.
So when you use the command:
sqlite3 foo.db
It also helps to know how you want to access/manipulate your data and
what you want to do with it in SQL versus with your application. For
instance, you could just store all the cad data as a blob, along with
the attributes in columns.
Then you can fetch the data based on attributes, and
D. Richard Hipp wrote:
> On Sep 21, 2008, at 8:51 AM, Russ Leighton wrote:
>
>> I am interested in ... a way
>> to constraint/control index selection on queries.
>>
>
> What other SQL database engines have this capability and what syntax
> do they use?
Richard,
Hope this are useful:
Oracle:
Kishor,
I think Marco may want to be able to know how to determine which tables
in a DB are real tables and which ones below to virtual tables. If you
want to do something like dump tables from the database, you do not want
to be dumping all the internally generated real tables. It might be
I'm +1 on this change.
While I have not run into it as a feature or mis-feature, I would concur
that it is ambiguous and problematic. A simple clear syntax benefits
everyone.
BTW, Thanks for all you effort to produce this wonder software.
Best regards,
-Steve W
D. Richard Hipp wrote:
>
Stephen Oberholtzer wrote:
> On Wed, Aug 6, 2008 at 6:26 PM, Brown, Daniel <[EMAIL PROTECTED]> wrote:
>
>> Good afternoon list,
>>
>> I would like to load my current database file completely into memory,
>> mostly as an experiment to check SQLite's maximum memory footprint,
>> however searching
Jeffrey Becker wrote:
> I have a table 'SiteMap' defined as :
>
> Create Table SiteMap
> (
> NodeID blob not null PRIMARY KEY,
> Title text NOT NULL UNIQUE,
> Url text NOT NULL
> );
>
> I'd like to index on the node's parent value as defined by the
> expression
csabi81 wrote:
> Hi everyone
>
> I want to clone a database: copy all data from original database to the
> destination database with a condition, so not all the entries need to be
> copied. I have tried the following:
> Obtain SQL from mastertable and create the tables in the new database, and
>
John Stanton wrote:
> Adding Javascript to Sqlite as a stored procedure language was a fairly
> simple operation. Try it if you need stored procedures.
This sounds really interesting.
How to you make access to the sqlite3 api in javascript? Would you need
to? Seems like you would need to at
I'm seeing a similar speed different with the 3X performance difference:
[EMAIL PROTECTED]:~/work$ true && ( set -x
> sqlite3 sample.db 'create table bar (foo text)'
> seq -w 1 200 | sed 's/^/id/' > list.txt
> sqlite3 sample.db '.imp "list.txt" "bar"'
> time -p sqlite3 sample.db 'select
Scott Hess wrote:
> On Sat, Jul 26, 2008 at 1:28 PM, Stephen Woodbridge
> <[EMAIL PROTECTED]> wrote:
>> Alexey Pechnikov wrote:
>>> I'm know that ispell, myspell, hunspell and trigrams are used in PostgreSQL
>>> FTS. A lot of languages are support
Alexey Pechnikov wrote:
> Hello!
>
> В сообщении от Saturday 26 July 2008 21:37:19 Stephen Woodbridge написал(а):
>> I have thought a lot about these issues and would appreciate any
>> thoughts or ideas on how to implement any of these concepts or others
>> for f
Alexey Pechnikov wrote:
> Hello!
>
> And how about stemming? Can I'm using ispell, myspell, hunspell? And trigrams?
Hello Alexey,
There are currently two stemmers available:
simple - which just breaks the input into tokens based on spaces and
punctuation that is first converted to spaces.
Hartwig Wiesmann wrote:
> The latest sqlite3_close(sqlite3*) documentation states:
>
> Applications should finalize all prepared statements and close all
> BLOB handles associated with the sqlite3 object prior to attempting to
> close the object. The sqlite3_next_stmt() interface can be used
tines, but I do not think this is a time critical step in the first
place. You debug routines do provide some additional information that my
approach does not provide.
I will definitely give your code a try.
Thanks,
-Steve
> On Sat, Jul 5, 2008 at 9:30 PM, Stephen Woodbridge
> <[EM
LMcLain wrote:
> Thanks for the replay Igor!
>
> I would heartily agree about getting a textbook. Do you have one that you
> could recommend?
I like "The definitive Guide to SQLite" by Michael Owens, it is
excellent, except the index which sucks. It is a very good read and
covers a lot of the
Igor Tandetnik wrote:
> "Nikolaus Rath" <[EMAIL PROTECTED]> wrote in
> message news:[EMAIL PROTECTED]
>> What happens if
>>
>> 1. I prepare and execute a select statement
>> 2. I retrieve a couple of rows
>> 3. I execute a new query that would change the result of the
>>query in 1
>
> On the
, offset, ...], [doc_id, offset, ...], ...
is this correct? where is this stored?
Best regards,
-Stephen Woodbridge
Original Message
Subject: [sqlite] FTS statistics and stemming
Date: Sat, 05 Jul 2008 23:30:55 -0500
From: Stephen Woodbridge <[EMAIL PROTECTED]>
Reply-To: G
Rael Bauer wrote:
> Hi,
>
> Is it possible to obtain partial matches to a search term using the fts
> search?
>
> E.g. field data contains: apple
> Search term: app
> will return a match (optionally with match info).
>
> If not, please add this as a feature request :).
MATCH 'app*'
should
Dan wrote:
> On Jul 12, 2008, at 2:42 AM, Steve Friedman wrote:
>
>>
>> Filip Navara wrote:
>>> how about actually attaching the patch? :)
>>>
>>> - Filip
>>>
>>> On Fri, Jul 11, 2008 at 9:23 PM, Steve Friedman
>>> <[EMAIL PROTECTED]> wrote:
I've just started using the rtree extension, and
y awesome in reducing
> over/under matches.
>
> Woody
>
> --- On Sat, 7/5/08, Stephen Woodbridge <[EMAIL PROTECTED]>
> wrote:
>
> From: Stephen Woodbridge <[EMAIL PROTECTED]> Subject: Re:
> [sqlite] Fuzzy Matching To: "General Discussion of SQLite Databas
Stephen Woodbridge wrote:
> I would be interested in having something like this also.
>
> What I don't understand in your approach is how you compute the
> (Levenstein) distance during a search. It seems like you have a fixed
> set of tokens from your document text and th
I would be interested in having something like this also.
What I don't understand in your approach is how you compute the
(Levenstein) distance during a search. It seems like you have a fixed
set of tokens from your document text and these are indexed. Then you
have a query token the you want
Alexey Pechnikov wrote:
> Hello!
>
> I found article about spatial extensions for SQLite
> http://www.perrygeo.net/wordpress/?p=115
>
> Do you know other GIS extensions? I'm migrating from PostgreSQL+PostGIS to
> SQLite and searching GIS extensions for SQLIte.
Tim Streater wrote:
> Hi,
>
> I have a PHP script that I run in Terminal under OS X, which opens an sqlite
> db and works on it. Trouble is, if the db doesn't exist then the PHP library
> silently creates an empty db with the given name. Given this, I need to
> detect that the empty db has
>
Stephen Woodbridge wrote:
> Hi all,
>
> I'm on Linux and I would like to build sqlite3 with rtree and ft3
> support. How do I do that? I have read through the docs, website, the
> wiki and have evidently missed the needed page(s).
>
> For example:
> http://www.sqlite.
Hi all,
I'm on Linux and I would like to build sqlite3 with rtree and ft3
support. How do I do that? I have read through the docs, website, the
wiki and have evidently missed the needed page(s).
For example:
http://www.sqlite.org/compile.html
talks about compilation options but does not say
Shawn Wilsher wrote:
> Hey all,
>
> I'm working with a partitioned table setup with a permanent table and
> a temp table with the same columns and indexes. Every X time we dump
> all the records in the temp table over to the permanent one. In order
> to make selection queries easier to manage,
Alex Katebi wrote:
> The problem with the view is that you can not pass a parameter or variable
> from the outer select to the views select.
Right that is not the purpose of a view. Think of a view as a virtual
TABLE. You can not pass a parameter to a table either. You can just
query the table
D. Richard Hipp wrote:
> On Jul 1, 2008, at 11:03 AM, Martin.Engelschalk wrote:
>
>> Hi all,
>>
>> i create and fill database files which reach quite a large size
>> after a
>> while, because i only add data and never remove it.
>> The database files themselves become quite fragmented on the
Hi all,
DROP TABLE IF EXISTS foo;
does not seem to work via the C-API. If I type it in sqlite3 it works fine.
When I tried via the C-API, I got the following:
SQL: drop table if exists addr;
SQL error: near "exists": syntax error
My code is:
strcpy(sql, "drop table if exists ");
c.panel wrote:
> Oh yes! "set" is the solution.
> I know that I have missed something...
> thanks a lot.
>
> no possibilities for indexing on an expression : is it a particularity of
> SQL or SQLite ?
postgresql provides function based indexes.
___
Alex Katebi wrote:
> I have no way of knowing which rows a select command has visited for an
> indexed table.
>
> create table t(a);
> create index it on t(a);
> insert ...
> select * from t where a=5;
>
> Is there a select hook for debugging?
How about:
explain select * from t where a=5;
This looks interesting:
http://sqlitedbms.sourceforge.net/index.htm
Alexey would this work for your multi-master replication? Maybe you
modify this to work for the specific task you have in mind.
-Steve
___
sqlite-users mailing list
Alexey Pechnikov wrote:
> В сообщении от Thursday 19 June 2008 20:23:22 Stephen Woodbridge написал(а):
>> Alexey Pechnikov wrote:
>>> Hello!
>>>
>>> Is any method for multy-master replication of SQLite databases?
>> http://www.google.com/search?num=100=en
Alexey Pechnikov wrote:
> Hello!
>
> Is any method for multy-master replication of SQLite databases?
>
http://www.google.com/search?num=100=en=1=sqlite++replication
___
sqlite-users mailing list
sqlite-users@sqlite.org
Dennis Cote wrote:
> Alexey Pechnikov wrote:
>> I think, you can use index directly as
>> create index id_idx on mytable(id);
>>
>> select count(id) from mytable where id>0;
>>
>> explain query plan select count(id) from mytable where id>0;
>> 0|0|TABLE mytable WITH INDEX id_idx
>>
>> It's better
In general, I have been very happy with it. It is a great introduction
and provides lots of examples. I think of it as more of a tutorial than
a reference manual. The SQLite web site is a better reference manual,
but lacks the examples and sample code that the book offers. Once you
get the
Hi all,
I would like to compile sqlite and spatialite using Windows VC++ 2008
Express Edition. I looked around on the website and wiki but knowing
almost nothing about these tools there was no obvious answer to me.
Does anyone have a step by step howto compile sqlite with VC++ 2008
Express
efault in the next version of the core sqlite library.
>
> -Shane
>
> On Tue, Jun 10, 2008 at 12:39 AM, Stephen Woodbridge <
> [EMAIL PROTECTED]> wrote:
>
>> Hi all,
>>
>> I was reading through the sqlite source and noticed that there appears
>> to b
and paths and things that can go wrong if the user
messes with things and since it is a dedicated application it will
always need the extension.
If this is already documented somewhere, please just point to it.
Thanks,
-Stephen Woodbridge
http://imaptools.com
Christophe Leske wrote:
> Shane Harrelson schrieb:
>> Dennis-
>>
>> Your last "simplification":
>>
> I never got that email from Dennis, I would be very interested in it.
>
> Dennis, this is actually what i am currently doing.
>
> However:
>
> i see no speed up for large areas (half the
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