Thanks all for your input.
Thanks to your feedback I have been able to advance quite a long way in my
studies... And yes my big problem is in fact understanding C++ (still in
learning phase).
4) I will check if this option is avaialable too on the express edition.
5) I did try to install System.
Hi,
Here is my database:
CREATE TABLE room (roomIdINTEGER PRIMARY KEY,
roomName TEXT);
CREATE TABLE range(level INTEGER,
roomIdMin INTEGER,
roomIdMax INTEGER,
CHECK (roomIdMin<=roomIdMax) );
CREATE TRIGGER room_i
2010/1/22 Tiberio, Sylvain :
> Hi,
>
> Here is my database:
>
.
.
.
> CREATE TRIGGER range_del BEFORE DELETE ON range FOR EACH ROW
> BEGIN
> SELECT RAISE(FAIL,'Room exist in this range')
> WHERE (SELECT count(*)
> FROM room
> WHERE room.roomId BETWEEN OLD.roomIdMin AN
Hi ,
I'm planning to use SQLite as a replacement of an home made data
storage file format.
In the current home made format, I use keywords followed by strings or
floats .
The issue is that number and type of data vary from one keyword to the
other:
Example :
Keyword-01Foo 12.007 Bar 24
Can you please check if the following sqlite3.6.21 compile errors on solaris 8
would critically affect sqlite functionality (pls see the attached)?
1) "conftest.c", line 15: undefined symbol: choke
"conftest.c", line 15: syntax error before or at: me
.
"conftest.cpp", line 26: Error: ch
hi
I wanna ask a naive question: are there commands to
lock/unlock a database? I only found SQL LOCK command
for tables.
thanks
Qianqian
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hi
I wanna ask a naive question: are there commands to
lock/unlock a database? I only found SQL LOCK command
for tables.
thanks
Qianqian
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> So my question is : how to create a table in which rows (keywords)
> could contain variable type and number of data ?
You cannot create table containing variable number of data values - it
contradicts relational data model. You can either create 2 tables -
one containing keywords, another all va
SQLite cannot lock/unlock tables. But by executing "BEGIN IMMEDIATE
TRANSACTION"/"BEGIN EXCLUSIVE TRANSACTION" and "COMMIT"/"ROLLBACK" you
can lock/unlock the database.
Pavel
On Fri, Jan 22, 2010 at 12:06 AM, Qianqian Fang
wrote:
> hi
>
> I wanna ask a naive question: are there commands to
> lo
I am doing mobile development, and the size of my application is
getting too large for comfort. I'd like to find a way to reduce the
file size, but maintain the performance.
I have a database that is read only. It is ordered and each row is
unique. It has only one table, which is significantly
Hi,
perhaps you could drop the primary key. The query you mentioned,
SELECT count(*) FROM table WHERE column = '%q'
does not utilize it, and if you do execute queries which do, do not
update the db, and have no other tables, then the primary key serves no
function.
Martin
Michael Thomason wrot
On Thu, Jan 21, 2010 at 07:55:14AM -0800, newlog scratched on the wall:
> Keyword-01Foo 12.007 Bar 24.9682
> Keyword-0264738 65535 12.12 3.1415 2.710.007
> Keyword-03SingleString
> ...
>
> So my question is : how to create a table in which rows (keywords)
> could contain
Thank you. I like that answer and I'll give it a try.
The application is a word game, and I have a dictionary of words. The
user enters a word, and the application checks against that word to
see if it exist. That's the only query ever used.
Would the following be any better?
SELECT rowid FRO
Uhh, sounds like a search function of a text editor or a simple routine you
could write (or find) in your development language. I can't see the magic of
using sqlite.
Tom
"Michael Thomason" wrote
in message
news:3cbb39411001220619j1c6cc8f5x46e0aeb4d0b91...@mail.gmail.com...
Thank you. I lik
Martin Engelschalk wrote:
> perhaps you could drop the primary key. The query you mentioned,
> SELECT count(*) FROM table WHERE column = '%q'
> does not utilize it
Does too. Primary key provides the index for the search. Without it, SQLite
would do full table scan. Use EXPLAIN QUERY PLAN to convi
On Fri, Jan 22, 2010 at 8:19 AM, Jay A. Kreibich wrote:
> On Thu, Jan 21, 2010 at 07:55:14AM -0800, newlog scratched on the wall:
>
>
>> Keyword-01 Foo 12.007 Bar 24.9682
>> Keyword-02 64738 65535 12.12 3.1415 2.71 0.007
>> Keyword-03 SingleString
>> ...
>>
>> So my question is
>
> Primary key provides the index for the search. Without it, SQLite would do
> full table scan. Use EXPLAIN QUERY PLAN to convince yourself.
I could use a binary search, but I worry about having a ten MB array
in memory on a mobile device, though it should work fine.
>Uhh, sounds like a search
I just discovered that attachments can be sent through this newsgroup so I
have attached a small database with which you should be able to reproduce
the problem. The one table in it has a field collated RMNOCASE. The
following query produces these results in three different versions of
sqlite:
Can you verify that changes for ticket
http://www.sqlite.org/src/info/1258875e07 checked-in yesterday resolve your
issue?
Thanks.
-Shane
On Fri, Jan 22, 2010 at 9:51 AM, ve3meo wrote:
> I just discovered that attachments can be sent through this newsgroup so I
> have attached a small database w
> Maybe I'll try a binary search, or something else along those lines.
>
You can mix binary search with sqlite as a storar. The idea is to place your
words ordered by text and use rowid as indexes.
So after creating a new table
CREATE TABLE Table2 AS SELECT * FROM Table ORDER BY Text
you now ca
I can confirm that the crash problem has been fixed by
http://www.sqlite.org/src/info/1258875e07 checked-in .
Now executing following sql will report no such collation sequence: RMNOCASE
instead of crash.
SELECT
Surname || ', ' || Given COLLATE NOCASE AS Person ,
Adr.Name COLLATE NOCASE AS Add
Hi,
I've spotted a very few places where the use of realloc or sqlite3_realloc
*may* constitute memory leaks if the realloc fails. Hope this helps;
please ignore if I've misread the code...
Line numbers should correlate to version 3.6.22, but I've included the
name of the function the line is
On 22 Jan 2010, at 2:19pm, Michael Thomason wrote:
> Thank you. I like that answer and I'll give it a try.
>
> The application is a word game, and I have a dictionary of words. The
> user enters a word, and the application checks against that word to
> see if it exist. That's the only query e
On Jan 22, 2010, at 10:21 PM, wcl...@gfs-hofheim.de wrote:
> Hi,
>
> I've spotted a very few places where the use of realloc or
> sqlite3_realloc
> *may* constitute memory leaks if the realloc fails. Hope this helps;
> please ignore if I've misread the code...
>
> Line numbers should correlate
Hiya,
Got a quick question. I perform the following on a table:
select * from table
How do I know when the select has completed all its transactions?
sqlite3_exec(db,query.c_str(),callback, this, &db_err);
I'm using the above statement,the callback is getting called as expected.
Thanks,
gary
On Fri, Jan 22, 2010 at 07:57:50AM -0800, gary clark scratched on the wall:
>
> Hiya,
>
> Got a quick question. I perform the following on a table:
>
> select * from table
>
> How do I know when the select has completed all its transactions?
>
> sqlite3_exec(db,query.c_str(),callback, this, &d
Oh boy. Thanks.
--- On Fri, 1/22/10, Jay A. Kreibich wrote:
> From: Jay A. Kreibich
> Subject: Re: [sqlite] grabbing row contents?
> To: "General Discussion of SQLite Database"
> Date: Friday, January 22, 2010, 10:01 AM
> On Fri, Jan 22, 2010 at 07:57:50AM
> -0800, gary clark scratched on the
Hello,
I've got a setup, where one process/thread writes data (multiple inserts
in one transaction ) to db and other which reads data (one select) from
db. These two threads use their own db connections. When "write" thread
and "read" thread access the database at the same time, then processing
> Does any sqlite MVP know what could be beyond this strange
> error message.
Exactly what message says: you tried to insert data that is not
allowed by constraints in the table. "Read"/"write" threads construct
doesn't have anything to do with that - everything can be reproduced
in one "write" th
Instead of using sqlite3_exec() and a callback, use sqlite3_prepare_v2() on
your statement and then run it with sqlite3_step() in a loop (there will be
one iteration be row of the result set). sqlite3_step() will return
something other than SQLITE_ROW when it's done. When it returns
SQLITE_ROW,
On Fri, 22 Jan 2010, Jan Bilek wrote:
> processing
> of write transaction fails with strange "constraint failed" error (no. 19).
> I've tried to search the web for any solution, but i haven't found
> anything.
While a web search can be useful, it is often more useful to go straight
to the releva
OK. Let's assume that my db design is buggy (messed up foreign keys or
something). Could you then explain why i receive "constraint failed"
error ONLY when any select query is in progress? No select in progress =
no error.
Thanks for reply.
Jan
cmar...@unc.edu wrote:
> On Fri, 22 Jan 2010, J
That's great! I'm an end-user and cannot compile it to check myself. Thanks
to shane, drh, Hub Dog for the rapid fix. I will have to dig around to
figure out how/when that shows up in a release.
That leaves the question about the change of syntax between 3.5.4 and
3.6.17. In the earlier it was
But why it only happens when any concurrent select query is in progress?
Thanks for any response.
Jan
Pavel Ivanov wrote:
>> Does any sqlite MVP know what could be beyond this strange
>> error message.
>>
>
> Exactly what message says: you tried to insert data that is not
> allowed by cons
>> Maybe I'll try a binary search, or something else along those lines.
>>
>
> You can mix binary search with sqlite as a storar. The idea is to place your
> words ordered by text and use rowid as indexes.
>
I tried this, and it works surprisingly well.
I'm also going to try a straight binary sea
> But why it only happens when any concurrent select query is in progress?
Probably you don't tell us all necessary information about your set up
(or maybe you don't know it yourself) because concurrent select cannot
cause this kind of error in any way. It can cause only SQLITE_BUSY
error. Are you
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