Hi,
Am 10.08.2011 11:14, schrieb flakpit:
To see what matches the location table with locations in the inventory table,
I can issue the following command and it works returning 17 locations
matched and is correct. There are 21 locations in the locations table but
only 17 used in the inventory
On 10 Aug 2011, at 10:27am, Martin Engelschalk wrote:
Am 10.08.2011 11:14, schrieb flakpit:
I need to update the ItemCount column in the locations table with
'1'when there is a corresponding match in the inventory table but using the
query below marks all locations in the locations table so
update locations
set ItemCount='1'
where exists(
select Location from hive where locations.Location=hive.Location
)
Okay, seems that I wasn't too far off. Thank you very much for the help, I
certainly needed it:):)
update locations
set ItemCount='0'
where
flakpit gary.flakhe...@gmail.com wrote:
I was just using this to make sure my matches were going to be correct.
select * from locations t1 where exists (
select * from hive t2
where t1.Location=t2.Location
)
A slightly shorter form:
select * from locations where Location in
Hi,
I have the results from the tests (below). Alot of the time is spent in
checking file permissions and locking the file (40 %).
Inmem
% time seconds usecs/call callserrors syscall
-- --- --- - -
28.530.124727
I have just tried using SQLite pro. In the existing database I am
trying to manipulate there are several tables. On trying to import a
.csv file into one of them and replacing the current data in that table
it works OK.
However, all the data in one of the other tables also gets deleted
Malcolm Lander land...@blueyonder.co.uk wrote:
I have just tried using SQLite pro. In the existing database I am
trying to manipulate there are several tables. On trying to import a
.csv file into one of them and replacing the current data in that table
it works OK.
However, all the data
Look at disc transfer. With 16 queries in one thread on single disc,
disc may be accesed linearly (depeding on query). With 16 threads
accesing disc at the same time linear disc access is impossible
(however os may do some prefetching) and queries will by slower. You
may try increasing page size -
You can do both in one pass:
update locations set ItemCount =
case when Location in (select Location from hive)
then '1' else '0'
end;
Thanks for your help Igor, extremely elegant solution.
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Thanks for the reply. It looks like this in the DDL is the culprit:
CREATE TRIGGER [AircraftIDdeltrig]
BEFORE DELETE
ON [Aircraft]
FOR EACH ROW
BEGIN DELETE FROM Flights WHERE AircraftID = OLD.AircraftID;END;
Is there a way to disable it?
On 10/08/2011 13:14, Igor Tandetnik wrote:
Malcolm
On 10 Aug 2011, at 1:27pm, Malcolm Lander wrote:
Thanks for the reply. It looks like this in the DDL is the culprit:
CREATE TRIGGER [AircraftIDdeltrig]
BEFORE DELETE
ON [Aircraft]
FOR EACH ROW
BEGIN DELETE FROM Flights WHERE AircraftID = OLD.AircraftID;END;
Is there a way to disable
Thanks for that. Although that disables the DDL trigger, on running the
import I get a abort due to constraint violation error:
Exception:
-
2.1 Date : Wed, 10 Aug 2011 13:35:56 +0100
2.2
2011/8/10 Wiktor Adamski bardzotajneko...@interia.pl:
You
may try increasing page size - bigger block means less near-random
reads from the disc.
It's good way. With page size 8k instead of default 1k selects performance
may increasing ~3x. Note: PostgreSQL use 8k disk pages.
--
Best
On 10 Aug 2011, at 1:39pm, Malcolm Lander wrote:
Thanks for that. Although that disables the DDL trigger, on running the
import I get a abort due to constraint violation error:
You will probably need to import data into the TABLEs in an order that suits
the data hierarchy. For instance,
Thanks again, I will have a go at that
On 10/08/2011 13:53, Simon Slavin wrote:
On 10 Aug 2011, at 1:39pm, Malcolm Lander wrote:
Thanks for that. Although that disables the DDL trigger, on running the
import I get a abort due to constraint violation error:
You will probably need to
To Answer several questions at once.
Simon,
Just checking: by 'queries' you mean 'SELECT', right ? You're not making
changes, just searching
Yes to optimize we average about 5-6 indexes per table.
D. Richard Hipp,
Open a separate database connection for each thread. Don't try to use the
same
I've never tried using this before for some reason but in a recent OS X version
of the command-line shell I tried using
.mode html
today. The content is fine, but it doesn't do TABLE or /TABLE.
Intentional ? Bug ? Oversight ? Trying hard to believe I'm not the first
person who has tried
On Wed, Aug 10, 2011 at 11:43 AM, Simon Slavin slav...@bigfraud.org wrote:
I've never tried using this before for some reason but in a recent OS X
version of the command-line shell I tried using
.mode html
today. The content is fine, but it doesn't do TABLE or /TABLE.
Intentional ? Bug
Where i can find c++ unicode unit for work with SQLite database? Thanks.
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On 08/10/2011 09:13 PM, Simon Slavin wrote:
The content is fine, but it doesn't do TABLE or /TABLE.
My shell copies the SQLite shell and also outputs only rows. The reason
is that multiple statements could be used to generate output so you do
not
On 8/10/2011 11:55 AM, NOCaut wrote:
Where i can find c++ unicode unit for work with SQLite database? Thanks.
What kind of unit? What is it that you want to do, but cannot, without
such a unit?
--
Igor Tandetnik
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If you want it just DIY...
.mode html
select table;
select * from stuff;
select /table;
Michael D. Black
Senior Scientist
NG Information Systems
Advanced Analytics Directorate
From: sqlite-users-boun...@sqlite.org
Sorry for my bad english)) I want find source code for work with sqlite..
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On Wed, Aug 10, 2011 at 5:55 PM, NOCaut per...@mail.ru wrote:
Where i can find c++ unicode unit for work with SQLite database? Thanks.
If you're looking for a generic unicode C++ library i can highly recommend:
http://utfcpp.sourceforge.net/
it's easy to use, header-only, and liberally
in the other forum say: You can get the SQLite source code and compile it
directly with C++ Builder (2010 and XE tested).
Come to home and see
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Thanks to everyone, including Michael for a fast work-around.
Simon.
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On 8/10/2011 12:08 PM, NOCaut wrote:
in the other forum say: You can get the SQLite source code and compile it
directly with C++ Builder (2010 and XE tested).
If you need SQLite source code, it's here:
http://sqlite.org/download.html . See also
http://sqlite.org/amalgamation.html
--
Igor
2011/8/10 Simon Slavin slav...@bigfraud.org:
I've never tried using this before for some reason but in a recent OS X
version of the command-line shell I tried using
.mode html
today. The content is fine, but it doesn't do TABLE or /TABLE.
Intentional ? Bug ? Oversight ? Trying hard to
Hello,
I am trying to learn how to use the incrblob command in the Tcl
interface and I can't get it to work. I create a one column table t,
insert one empty value into it, than do db incrblob t a 1, which
works fine, I get a file pointer back incrblob_1.
Then I do puts incrblob_1 hello world,
Depending on your preferred shell...the sqlite CLI is just crazy flexible.
Just pipe your output through sed for upper/lower preferences.
On Aug 10, 2011 12:18 PM, Kit kit.sa...@gmail.com wrote:
2011/8/10 Simon Slavin slav...@bigfraud.org:
I've never tried using this before for some reason but
If you don't like upper case then change the code and re-compile. That's the
nice part of source code.
Michael D. Black
Senior Scientist
NG Information Systems
Advanced Analytics Directorate
From: sqlite-users-boun...@sqlite.org
I work in VS2008 c++
i create data base my.db and wont use U N I C O D E function from this DLL
i find class or unit for connect to my base from VS2008
http://sqlite.org/download.html - this link help me?
you understand me?
--
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The 179148 failures on 'access' system call is due to access check of two
files - the journal file and the wal-file.
The journal mode was OFF as also WAL mode.
Why is sqlite checking access permissions for this file 179140 times?
Removing or optimising this will make it faster by 20% atleast!
On Wed, Aug 10, 2011 at 12:24 PM, Victor Mayevski vit...@gmail.com wrote:
Hello,
I am trying to learn how to use the incrblob command in the Tcl
interface and I can't get it to work. I create a one column table t,
insert one empty value into it, than do db incrblob t a 1, which
works fine,
On Wed, Aug 10, 2011 at 12:40 PM, Sreekumar TP sreekumar...@gmail.comwrote:
The 179148 failures on 'access' system call is due to access check of two
files - the journal file and the wal-file.
The journal mode was OFF as also WAL mode.
Why is sqlite checking access permissions for this file
2011/8/10 Brian Curley bpcur...@gmail.com:
Depending on your preferred shell...the sqlite CLI is just crazy flexible.
Just pipe your output through sed for upper/lower preferences.
It is not entirely primitive. It needs only tags in lowercase.
cite href=http://www.sqlite.org/sqlite.html;
The
On Aug 10, 2011, at 12:39 PM, NOCaut wrote:
I work in VS2008 c++
i create data base my.db and wont use U N I C O D E function from this DLL
i find class or unit for connect to my base from VS2008
http://sqlite.org/download.html - this link help me?
you understand me?
No, but maybe
Thanks for the explanation. The journal mode was OFF which means there is
no journal file created. So why is it the check still performed ?
On Wed, Aug 10, 2011 at 10:24 PM, Richard Hipp d...@sqlite.org wrote:
On Wed, Aug 10, 2011 at 12:40 PM, Sreekumar TP sreekumar...@gmail.com
wrote:
The
On 8/10/2011 12:39 PM, NOCaut wrote:
I work in VS2008 c++
i create data base my.db and wont use U N I C O D E function from this DLL
Why won't you?
Which DLL is 'this DLL'?
i find class or unit for connect to my base from VS2008
http://sqlite.org/download.html - this link help me?
I
Then you'd need your sed regex to handle that mask accordingly. The CLI is
understandably your best friend in this case.
A rogue's gallery just awaiting you to tell it what to do...I prefer to
model my app using views, and feed it .import files. You might even replace
time and date retrieval
On 10 Aug 2011, at 5:58pm, Kit wrote:
2011/8/10 Brian Curley bpcur...@gmail.com:
Depending on your preferred shell...the sqlite CLI is just crazy flexible.
Just pipe your output through sed for upper/lower preferences.
It is not entirely primitive. It needs only tags in lowercase.
cite
Hello,
Is it possible to get more info when I get a constraint failed error
from the C API?
I am interested in the column name, table name and type of constraint.
Regards,
Julien
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On 10 Aug 2011, at 6:01pm, Sreekumar TP wrote:
Thanks for the explanation. The journal mode was OFF which means there is
no journal file created. So why is it the check still performed ?
Because the journal mode might have been 'ON' the last time that database was
used.
On Wed, Aug 10,
@Simon: I'd disagree, unless you mean to make it less specific, since it's
really an exercise for the reader to infer mark-up...not just HTML over
XHTML. But that's just me...
On Aug 10, 2011 1:06 PM, Simon Slavin slav...@bigfraud.org wrote:
On 10 Aug 2011, at 5:58pm, Kit wrote:
2011/8/10
On 10 Aug 2011, at 6:10pm, Brian Curley wrote:
@Simon: I'd disagree, unless you mean to make it less specific, since it's
really an exercise for the reader to infer mark-up...not just HTML over
XHTML. But that's just me...
The SQLite page states specifically XHTML:
The journal mode was always OFF when the code executes. The db was/is never
opened with a journal.
I havent analysed when exactly these calls are made, but definitely, it
quite a lot..
On Wed, Aug 10, 2011 at 10:39 PM, Simon Slavin slav...@bigfraud.org wrote:
On 10 Aug 2011, at 6:01pm,
On Wed, Aug 10, 2011 at 1:09 PM, Simon Slavin slav...@bigfraud.org wrote:
On 10 Aug 2011, at 6:01pm, Sreekumar TP wrote:
Thanks for the explanation. The journal mode was OFF which means there
is
no journal file created. So why is it the check still performed ?
Because the journal mode
Ok, its getting a bit clear.
If there is only one process that is writing to the database, but has more
than one process that reads the database, the locking mode can still be
exclusive ?
If the other process opens the db connection as read_only, will the hot
journal check be still done (during
On Wed, Aug 10, 2011 at 1:35 PM, Sreekumar TP sreekumar...@gmail.comwrote:
Ok, its getting a bit clear.
If there is only one process that is writing to the database, but has more
than one process that reads the database, the locking mode can still be
exclusive ?
PRAGMA
2011/8/10 Simon Slavin slav...@bigfraud.org:
However, the tags the shell tool generates are upper case. There are two
possible fixes:
a) change the tool to generate lower-case tags.
b) change the documentation to say that the tags are HTML, not XHTML.
Simon.
OK, here is the patch.
--
Kit
If you have one reader and many writers, consider PRAGMA journal_mode=WAL;
Richard meant one writer and many readers of course.
If the other process opens the db connection as read_only, will the hot
journal check be still done (during queries operations of the second
process)?
How is the
Ok.. But I sqlite can still check the number of db connections open and
optimise the checking= as long as there is only one writer, do not check
for hot journals.
Can a database have two connections opened with two different journal modes
?
On Wed, Aug 10, 2011 at 11:35 PM, Pavel Ivanov
On Wed, Aug 10, 2011 at 2:13 PM, Sreekumar TP sreekumar...@gmail.comwrote:
But I sqlite can still check the number of db connections open
No it cannot.
In unix, there is no way for one process to know whether or not another
process has a particular file open. And if there is a mechanism to
Oh Yes. I missed that point !
On Wed, Aug 10, 2011 at 11:57 PM, Richard Hipp d...@sqlite.org wrote:
On Wed, Aug 10, 2011 at 2:13 PM, Sreekumar TP sreekumar...@gmail.com
wrote:
But I sqlite can still check the number of db connections open
No it cannot.
In unix, there is no way for
Under Linux:
man fuser
Will detect other processes which have the DB open.
It's done by looking at all the /proc entries.
Under windows
http://www.codeproject.com/KB/IP/OpenFiles.aspx
Michael D. Black
Senior Scientist
NG Information Systems
Advanced Analytics Directorate
From:
But I sqlite can still check the number of db connections open
Even though as Michael have shown this is possible (with guaranteed
results only when run as root) it will still have races. Because if
you see only one process accessing database file at the end of
transaction and only one process
Hi,
I have downloaded the SQLite version 3.7.7.1 from the *Legacy Source Code
Distribution Formats . *
**
Here I am just compiling the source code from the src folder and I am
seeing lot of compilation errors by saying the header files missing and some
of the header files are really missing.
Hi, I'm getting an error message whenever I reboot my computer stating
procedure entry point sqlite3_wal_checkpoint could not be located in the
dynamic link library sqlite3.dll
How do I fix this?
Thanks
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On Wed, Aug 10, 2011 at 9:15 PM, Lisa Davey steinwa...@gmail.com wrote:
Hi, I'm getting an error message whenever I reboot my computer stating
procedure entry point sqlite3_wal_checkpoint could not be located in the
dynamic link library sqlite3.dll
How do I fix this?
Reinstall iTunes.
What
On Wed, Aug 10, 2011 at 9:35 PM, Lisa Davey steinwa...@gmail.com wrote:
In the past few weeks I installed uptates to Bonjour, itues, safari, apple
application support. A program called HyperCam 3, The Garmin communicator
plugin and usb drivers.
And you don't know which of these was the last
Hi guys,
I want a readonly connection wait for locked database instead of error
return immediately.
The question is equivalence to how to let a reaonly connection have
busy_handler triggered
when the database is locked.
In my practice, the readonly connection will fail when db locked and
On 11 Aug 2011, at 3:35am, Wenbo Zhao wrote:
I want a readonly connection wait for locked database instead of error
return immediately.
The question is equivalence to how to let a reaonly connection have
busy_handler triggered
when the database is locked.
In my practice, the readonly
Pls list the compilation errors..
--Original Message--
From: Raja Kondu
Sender: sqlite-users-boun...@sqlite.org
To: sqlite-users@sqlite.org
ReplyTo: General Discussion of SQLite Database
Subject: [sqlite] sqlite-src-3070701.zip compilation issues
Sent: Aug 11, 2011 4:36 AM
Hi,
I have
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