Just curious why you wrap your SELECT statement into a 'TRANSACTION' ...
-Original Message-
From: sqlite-users-boun...@sqlite.org
[mailto:sqlite-users-boun...@sqlite.org] On Behalf Of Martin C.
Sent: quinta-feira, 16 de setembro de 2010 14:16
To: sqlite-users@sqlite.org
Subject: [sqlite]
Calling UPPER() for each field/value while querying is a pain, if you can
assume the names are all in uppercase
(forcing this in your program before passing them to SQlite), you could
speed up things a lot. But you need to
analyze what´s happening inside SQlite to check if indices are used, etc.
>> My question came purely from a mild curiosity. I was wondering about
>> the behavior of sqlite call sqlite3_bind_text when it is passed a range
>> of BYTES that includes nulls.
See this snipper for documentation:
"The third argument is the value to bind to the parameter.
In those routines
It´s good to try to reproduce all conditions that this problem happens, to
help with creating test-cases
and with bug fix.
[]'s
-Original Message-
From: sqlite-users-boun...@sqlite.org
[mailto:sqlite-users-boun...@sqlite.org] On Behalf Of P Kishor
Sent: sábado, 19 de dezembro de 2009 00:3
This is probably a bug in SQL parser, that doesn't reduced to one
parenthesis,
causing the side effect in VDBE engine, that doesn't returned all ID´s to IN
evaluator in first select.
This should be easily reproduced, but the fix you must wait for Richard or
other
that have knowledge on VDBE inst
Question 1 is a very good question, why pay for a partial copy if you can
use the full version for free?
Also, what is the sense of using SQLite database without SQL support? (this
remember Clipper/dBase GOTO LOCATE APPEND...)
I can't get the point... if you can't use a native SQLite in your plat
'Not using SQL directly' means you create a series data access interface
like an ISeries interface that browse in a cursor-style through your series
data, then implement it as a concrete class like DatabaseSeries that does
the SQL job for you.
Talking about scaling issues means that you could do s
I was trying to figuring out if you are doing something of graph data
analysis, I do it almost everyday in our Stock Trader applications...
I never did this way (direct SQL), cause our graph series data sources are
implement throught a common interface, that could be a SQL query, a stream,
a XML,
Curious... even it does not make sense, it pass also on oracle 11g (sql
server actively refused to run)
SQL Server 2008:
SELECT (SELECT COUNT(*) FROM T t_inner GROUP BY t_outer.c) FROM T t_outer
-- Msg 164, Level 15, State 1, Line 1
-- Each GROUP BY expression must contain at least one column tha
eed vfs to continue working on
> other databases but to be notified (or have possibility to
> check) when
> one particular database is no longer opened.
>
> Pavel
>
> On Thu, May 7, 2009 at 12:00 PM, Ken
> wrote:
> >
> > --- On Thu, 5/7/09, Virgilio Alexandre Forna
Close should wait for all file operations complete to meet that needs.
I think asynchronous VFS should take care of waiting in sqlite3_close()
call.
-Original Message-
From: sqlite-users-boun...@sqlite.org
[mailto:sqlite-users-boun...@sqlite.org] On Behalf Of Pavel Ivanov
Sent: quinta-feir
Virgilio Alexandre
Fornazin
Sent: Tuesday, May 05, 2009 12:23 PM
To: 'General Discussion of SQLite Database'
Subject: Re: [sqlite] Large SQLite3 Database Memory Usage
Are you using ADO or plain sqlite dll ?
May this be a leak in your provider ?
-Original Message-
From: sqlite-
Are you using ADO or plain sqlite dll ?
May this be a leak in your provider ?
-Original Message-
From: sqlite-users-boun...@sqlite.org
[mailto:sqlite-users-boun...@sqlite.org] On Behalf Of Kalyani Phadke
Sent: terça-feira, 5 de maio de 2009 16:13
To: General Discussion of SQLite Database
S
Where we can get the code ?
-Original Message-
From: sqlite-users-boun...@sqlite.org
[mailto:sqlite-users-boun...@sqlite.org] On Behalf Of stephen liu
Sent: terça-feira, 28 de abril de 2009 22:24
To: sqlite-users@sqlite.org
Subject: [sqlite] A memvfs for loading/saving database from buffer
Maybe RTOS kernel does not implement Wide-Char functions...
Windows VFS must guard them with a SQLITE_WINDOWS_NO_UNICODE
macro or something like that at compile time, but you should
do it yourself... then you can contribute it back to SQLite.
-Original Message-
From: sqlite-users-boun.
SQLite is file-based (no server behind DB), you must provide your own
synchronization (copying file, executing SQL on both databases, etc).
I don't know if there´s an application/library that does it for you
automatically.
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECT
Sure. I just tell to do this test to check if the bug is related to this
component, since it debuted on Vista.
Virgilio Alexandre Fornazin
High performance and realtime systems development
Rua Brigadeiro Vicente Faria Lima, 268
Bela VistaLeme-SPCEP 13611-485
Phone: +55 19 3571-5573
Note that Windows Server 2008 use the same 'core' as Windows Vista.
If you´re detecting and redirecting by using GetVersion() or other
approach you might test for Server 2008 too.
Virgilio Alexandre Fornazin
High performance and realtime systems development
Rua Brigadeiro Vicente
Could not this bug be related with Vista feature called 'Superfetch' ?
It tries to keep in memory the most accessed files for user, avoiding
disk for read access.
If you disable (or stop) this service, the problem remains or not ?
Virgilio Alexandre Fornazin
High performance an
that we'll lose the ability to do multiple reads at
the same time, however. I'm open to suggestions on a better way to
fix this problem.
Cheers,
Shawn
On Wed, May 21, 2008 at 1:05 PM, Virgilio Alexandre Fornazin
<[EMAIL PROTECTED]> wrote:
> Not to putting flame in question, but
Not to putting flame in question, but why not use any connection per thread
? At this way you can guarantee:
- Correct transaction processing;
- Avoid waiting on R/W locks, allowing more than one read to run
concurrently;
We also use this model with ODBC / ADO database layers.
You don't need to
A good and new safe could be a sqlite3_close_v2() call prototyped like
int sqlite3_close_v2(sqlite3 * db, int closePendingStatements);
and current sqlite3_close() call could become
int sqlite3_close(sqlite3 * db)
{
return sqlite3_close_v2(db, 0);
}
In this way, current running code does
The best you can do actually with SQLite is a 'mirror-replicating' mode
engine
that works like Microsoft Windows Active Directory Database, to build a king
of
High Availability / Load Balancing server.
You have a farm of servers (or workstations, etc) receiving SQL commands by
a
channel (socket,
The database contains all pragmas commands you had executed.
Why keep storing in a configuration file, since it´s not a database server?
Please keep in mind that SQlite is a general purpose 'embedded' database
engine,
not a DBA-managed database server.
Also WHY SQlite should have a configuration
Imagine the following cenario (I assume you know c++ stdlib)
A map of strings (filenames) to in-memory file handlers (the objects that
will handle the shared memory or heap files).
These files handlers will exists until the process exists and do not receive
a delelefile() vfs call.
File handlers
You must have to do a run inside gdb to get sqlite shell working then you
can get your segfault
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of dark0s dark0s
Sent: domingo, 13 de abril de 2008 11:00
To: sqlite-users@sqlite.org
Subject: [sqlite] segmentati
gdb is your friend here. compile with:
gcc -O0 -g -shared labsinf.c -o soundex.so
then run sqlite with gdb
gdb sqlite3
()
gdb> run
then you can get the backtrace of your exception
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of dark0s dark0s
S
Yes. I did this in my custom version of SQLite. If statement is ALTER TABLE,
and SQLite returns error, I check if it´s ALTER TABLE (t) MODIFY COLUMN ou
DROP COLUMN, doing the exact flow you did.
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Derrell Lipma
gcc support this, msvc++ and other compilers does not.
-Original Message-
From: Russell Leighton [mailto:[EMAIL PROTECTED]
Sent: terça-feira, 30 de outubro de 2007 23:32
To: sqlite-users@sqlite.org
Subject: Re: [sqlite] Proposed sqlite3_initialize() interface
On Oct 30, 2007, at 10:18 A
There is a better workaround: get the code from the .dump command of sqlite3
utility and use it...
it creates a fresh copy of your database like using
sqlite3 dbold .dump | sqlite3 newdb (not sure about the syntax, there´s a
example of this
case on internet)
-Original Message-
From: Ron
SQLite use the 'cursor' style like SQL Server / ORACLE in stored procedures:
you fetch in a unidirectional (forward only) way.
To achieve bi-directional support you must have to store the results in
memory as you fetch them (not so difficult to accomplish if you have enough
memory to do it, a bit
You can create a 'shared memory VFS' to share a memory database against
other thread / processes, and you can also 'copy' the RAW bytes of your
memory with memcpy from/to another storage to accomplish the serialize /
load you want to wire transfer SQLite memory databases. But this is not a
simple c
Did you closed the cursor opened at 'select *...' ?
Thats probably the reason you have getting a 'table is locked' error.
-Original Message-
From: RaghavendraK 70574 [mailto:[EMAIL PROTECTED]
Sent: quinta-feira, 30 de agosto de 2007 19:24
To: sqlite-users@sqlite.org
Subject: Re: [sqlite]
l in error, please notify the sender by
phone or email immediately and delete it!
*
- Original Message -
From: Virgilio Alexandre Fornazin <[EMAIL PROTECTED]>
Date: Tuesday, August 28, 2007 8:42
Hi
There´s possible to share a sqlite3 handle to a memory database in all
threads of application?
Or there´s a way to duplicate the handle (sqlite_open() or something like
that)?
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