Dear All,
We are using SQLite for our application development which would be
deployed in a pocket pc.Here we are using a inner join query which takes
different time during different executions, the query which we using in our
application is
"SELECT DISTINCT MT.PcNo, MT.SubPcNo, MT.BrandNo,
If you just need the rtree extension, I believe it will be included by
default 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
Greetings Steve,
On 6/9/08, Stephen Woodbridge <[EMAIL PROTECTED]> wrote:
> Hi all,
>
> I was reading through the sqlite source and noticed that there appears
> to be an ability to build and extension that is statically linked and
> autoloaded, but I can not find any details on how to do
Hi all,
I was reading through the sqlite source and noticed that there appears
to be an ability to build and extension that is statically linked and
autoloaded, but I can not find any details on how to do this.
For example, if I want to build an application that uses the rtree
extension on
Alex Katebi wrote:
> I am trying to implement remote procedure calls (RPC) for SQLite API to be
> used in my application.
> In particular sqlite3_column_double( ) returns a floating point double.
> How can I write this double value into a TCP socket?
> I have tried writing 8 bytes as integer
On Jun 9, 2008, at 9:58 PM, Russell Leighton wrote:
>
> On Jun 9, 2008, at 8:52 PM, Igor Tandetnik wrote:
>
>> "Alex Katebi" <[EMAIL PROTECTED]>
>> wrote in message
>> news:[EMAIL PROTECTED]
>>> I am trying to implement remote procedure calls (RPC) for SQLite API
>>> to be used in my
Hello Alex,
How about a text representation? CSV over the network using the HTTP
protocol or something like that.
C
Monday, June 9, 2008, 8:40:39 PM, you wrote:
AK> I am trying to implement remote procedure calls (RPC) for SQLite API to be
AK> used in my application.
AK> In particular
On Jun 9, 2008, at 8:52 PM, Igor Tandetnik wrote:
> "Alex Katebi" <[EMAIL PROTECTED]>
> wrote in message
> news:[EMAIL PROTECTED]
>> I am trying to implement remote procedure calls (RPC) for SQLite API
>> to be used in my application.
>> In particular sqlite3_column_double( ) returns a floating
"Alex Katebi" <[EMAIL PROTECTED]>
wrote in message
news:[EMAIL PROTECTED]
> I am trying to implement remote procedure calls (RPC) for SQLite API
> to be used in my application.
> In particular sqlite3_column_double( ) returns a floating point
> double. How can I write this double value into a TCP
I am trying to implement remote procedure calls (RPC) for SQLite API to be
used in my application.
In particular sqlite3_column_double( ) returns a floating point double.
How can I write this double value into a TCP socket?
I have tried writing 8 bytes as integer values but the received valued at
Bruce Robertson wrote:
> Thanks, but I'm gonna need some further instruction or examples or pointers
> to a resource as none of these statements mean anything to me.
>
I also posted some sample code that is equivalent to the old sample code
at http://www.sqlite.org/quickstart.html which still
Bruce Robertson wrote:
> Thanks, but I'm gonna need some further instruction or examples or pointers
> to a resource as none of these statements mean anything to me.
>
Try reading this http://www.sqlite.org/cintro.html and see if it makes
more sense after that.
HTH
Dennis Cote
On Mon, Jun 09, 2008 at 03:39:01PM -0700, Bruce Robertson scratched on the wall:
> Thanks, but I'm gonna need some further instruction or examples or pointers
> to a resource as none of these statements mean anything to me.
These are C API function calls. If you're not using the C API, none
Thanks, but I'm gonna need some further instruction or examples or pointers
to a resource as none of these statements mean anything to me.
> Use this sequence:
>
> sqlite3_open
> sqlite3_prepare_v2//Compiles SQL statement
>
> loop
> sqlite3_bind... //Binds variables
>
>
Alexey Pechnikov wrote:
> В сообщении от Monday 09 June 2008 17:52:24 Dennis Cote написал(а):
>
>>If you
>>consider dates to be equal when the two dates are the same to within one
>>second, then you could use that value as your maximum difference. Since
>>a julian day number has units of days,
Can somebody point me to documentation or examples of sqlite prepare
statements and their purose?
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On Mon, Jun 9, 2008 at 3:49 PM, Bruce Robertson <[EMAIL PROTECTED]> wrote:
>> select f || ' ' || group_concat(t, ' ')
>> from w
>> where f in (1, 2, 3);
>> group by f;
>>
>> HTH
>> Dennis
>
> Can you explain that?
>
> What's the || ' ' || part?
|| is the string concat operator. e.g.
> David Baird wrote:
>>
>> Okay, just built SQLite 3.5.9 and group_concat does in fact work:
>>
>> select group_concat(t, ' ') from w where f=1;
>
> You forgot the parent value at the beginning. Also, the OP may want to
> do this for several parents which can be accomplished by grouping the
В сообщении от Monday 09 June 2008 17:52:24 Dennis Cote написал(а):
> If you
> consider dates to be equal when the two dates are the same to within one
> second, then you could use that value as your maximum difference. Since
> a julian day number has units of days, you can use a value of 1/86400
Each pair of columns (min/max) represents one dimension. So for
latitude/longitude coordinates you would have 5 columns: 1 id column and 2
columns each for latitude and longitude. 5 "columns" equates to 2
dimensions of data. 7 "columns" equates to 3 dimensions of data. Etc.
HTH.
-Shane
On
> You can improve performance (space/speed) a little by changing the
> RTREE_MAX_DIMENSIONS at the top of rtree.c to match you data set. It
> defaults to 5 dimensions, but you could reduce to this to 2, or 3 with city
> size.
>
> #define RTREE_MAX_DIMENSIONS 5
>
Hi Shane,
thanks for the
sqlite>select level from sqlGuruOMeter where name="Ron Wilson";
2
Ron Wilson, S/W Systems Engineer III, Tyco Electronics, 434.455.6453
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Wilson, Ron P
Sent: Monday, June 09, 2008 1:49 PM
To: General
On Mon, Jun 9, 2008 at 11:40 AM, Dennis Cote <[EMAIL PROTECTED]> wrote:
> David Baird wrote:
>>
>> Okay, just built SQLite 3.5.9 and group_concat does in fact work:
>>
>> select group_concat(t, ' ') from w where f=1;
>
> You forgot the parent value at the beginning. Also, the OP may want to
>
Wicked. Thanks David and Dennis!
And this works like a charm for all parents:
select f || ' ' || group_concat(t, ' ') from w group by f;
This pushes me up to a '2' on the SQL Guru Meter.
RW
SQLGuru-O-Meter |0-+--510|
Ron Wilson, S/W Systems Engineer III, Tyco Electronics, 434.455.6453
Yes. I have been lurking here long enough to hear that response 100x -
and it is a fair answer. Thanks!
RW
Ron Wilson, S/W Systems Engineer III, Tyco Electronics, 434.455.6453
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Igor Tandetnik
Sent:
David Baird wrote:
>
> Okay, just built SQLite 3.5.9 and group_concat does in fact work:
>
> select group_concat(t, ' ') from w where f=1;
You forgot the parent value at the beginning. Also, the OP may want to
do this for several parents which can be accomplished by grouping the
results.
On Mon, Jun 9, 2008 at 11:19 AM, David Baird <[EMAIL PROTECTED]> wrote:
> On Mon, Jun 9, 2008 at 11:09 AM, Igor Tandetnik <[EMAIL PROTECTED]> wrote:
>> Wilson, Ron P
>> <[EMAIL PROTECTED]>
>> wrote:
>>> select t from w where f=1;
>>> 2
>>> 3
>>> 4
>>> 5
>>> 6
>>> 7
>>>
>>> I would like the output
You can improve performance (space/speed) a little by changing the
RTREE_MAX_DIMENSIONS at the top of rtree.c to match you data set. It
defaults to 5 dimensions, but you could reduce to this to 2, or 3 with city
size.
#define RTREE_MAX_DIMENSIONS 5
-Shane
On 6/9/08, Dennis Cote <[EMAIL
On Mon, Jun 9, 2008 at 11:09 AM, Igor Tandetnik <[EMAIL PROTECTED]> wrote:
> Wilson, Ron P
> <[EMAIL PROTECTED]>
> wrote:
>> select t from w where f=1;
>> 2
>> 3
>> 4
>> 5
>> 6
>> 7
>>
>> I would like the output to look like this:
>>
>> 1 2 3 4 5 6 7
>>
>> i.e. parent child1 child2 ... childN
>
>
Wilson, Ron P
<[EMAIL PROTECTED]>
wrote:
> select t from w where f=1;
> 2
> 3
> 4
> 5
> 6
> 7
>
> I would like the output to look like this:
>
> 1 2 3 4 5 6 7
>
> i.e. parent child1 child2 ... childN
SQL is not formatting or reporting library. It gives you raw data, and
it's up to your
Given the following:
create table w (f, t);
begin;
insert into w (f, t) values (1, 2);
insert into w (f, t) values (1, 3);
insert into w (f, t) values (1, 4);
insert into w (f, t) values (1, 5);
insert into w (f, t) values (1, 6);
insert into w (f, t) values (1, 7);
...
commit;
select t from w
> I would expect that sqlite3_prepare would be faster in such a case, and
> maybe Toms is pointing out a circumstance where recreating the query
> seems to be faster. Or am I misreading the post?
One possible explanation (stab in the dark):
If many of the bound parameters are text (or blob)
Chiming in a thought, but isn't there a subtle difference between the two?
As I am reading Toms post, sqlite3_prepare would be called once and the
parameters would be bound up to 384 times
The call to sqlite3_exec should finalize the prepared query and
re-prepare it 384 times.
I would expect
Dennis Cote wrote:
>
> flakpit wrote:
>
> You could try
>
>select distinct category, subcategory
>from documents
>order by category, subcategory;
>
> Then your application can do the display formatting, such as suppressing
> the display of the category when it is the same as
flakpit wrote:
>
> There may be thousands of category and subcategory duplications as they are
> not the primary record identifier.
>
> I.e. A record has a category of "Manuals" and a subcategory "Audio"
> Another record has a category of "Manuals" and a subcategory "Phone"
> A
Hi Gary,
Does
SELECT DISTINCT category, subcategory from documents;
not provide what you want? If not you may need to be more specific.
Rgds,
Simon
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On Mon, 9 Jun 2008, Francesco Pietra wrote:
> [EMAIL PROTECTED]:~/sqlite$ sqlite biology_text.txt (text file)
This in incorrect syntax. You cannot import text or other data when
invoking sqlite. You need to invoke sqlite with the name of a new or
existing sqlite database, then import your data
Sqlite3_exec just encapsulates sqlite3_prepare. You very likely have
something wrong with your code if yor version works slower.
toms wrote:
> Hi all
> I tried to use the sqlite3_prepare to increase my performances during
> requests for both writing / reading.
> The strange thing is that when
Hi all
I tried to use the sqlite3_prepare to increase my performances during
requests for both writing / reading.
The strange thing is that when using prepare on a request used many
times with many parameters (many times = 384 max, many parameters = 15)
it os slower than simply using the
Hello, due to the wonderful help that I have recieved before, I dare to ask
"I have records in a database with Category and Subcategory fields. How
would I formulate the query to return distinct results and return for
whatever I need to do with them?"
There may be thousands of category and
Christophe Leske wrote:
>
> - one can somehow index the fields of an rtree table, and if so how?
> - if there could be any other information in an rtree table other than
> the integer ID and then the real values for the rectangles.
>
> The reason i am asking for this is because this yields to
Alexey Pechnikov wrote:
>
> and compare is right, but is this correct way for date values?
>
Yes, this is correct, or at least expected, for date values stored as
floating point julian day numbers.
The binary floating point values used are the best approximations to the
decimal rational
Hi:
To start with I installed sqlite 2.8.17 from Debain Linux lenny. I
know about 3.5.9: I'll come to later.
I am tired from using the database Asksam though the Windows emulator
wine. At the moment it does not work. I had previously expoted thre
Asksam files as
text file
text-delimited file
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