"INTEGER PRIMARY KEY" declares an alias for the rowid. It is always NOT NULL
(it is the record number) and it is always and integer (it is not ducky-typed).
Specifying NULL for the rowid causes the generation of the "next" rowid/record
number. AUTOINCREMENT modifies "next" to mean "one
On Monday, 18 April, 2016 08:47 Olivier Mascia wrote:
> Just to clarify: you mean compiled using SQLITE_CONFIG_MULTITHREAD (and
> not SQLITE_CONFIG_SERIALIZED), is that it?
> Then, if using threads in the application, each thread has its own
> connection (or multiple connections) but no thread
t18970237136 at web.de wrote:
>>> after updating to 1.0.100.0 which uses SQLite 3.12.1, we are getting the
>>> following error
>>>
>>> SQLite error (1): AUTOINCREMENT is only allowed on an INTEGER PRIMARY KEY
>
> The problem is ... the "[" and "]" in this syntax:
> CREATE TABLE Customer (
>
On 04/16/2016 04:59 PM, Cecil Westerhof wrote:
> I am playing a bit with SQLite. I first had a table with 1E8 elements. When
> trying to drop this it looked like SQLite got hung. I tried it from DB
> Browser and a Java program.
> I just tried it with a table of 1E7 elements. That was dropped in
Hi Clemens,?
> Gesendet:?Montag, 18. April 2016 um 16:07 Uhr
> Von:?"Clemens Ladisch"
> t18970237136 at web.de wrote:
> > after updating to 1.0.100.0 which uses SQLite 3.12.1, we are getting the
> > following error
> >
> > SQLite error (1): AUTOINCREMENT is only allowed on an INTEGER PRIMARY
t18970237136 at web.de wrote:
> after updating to 1.0.100.0 which uses SQLite 3.12.1, we are getting the
> following error
>
> SQLite error (1): AUTOINCREMENT is only allowed on an INTEGER PRIMARY KEY
>
> The problem seems to be that the tables have been created using the following
> SQL:
>
[Sorry, I sent an HTML email which doesn't seem do be allowed by the mailing
list. I'm sending the message again as plain text]
Hi,
we are using SQLite in a C# (.Net 4.6, x86 and x64) Application on Windows 10/7
using the System.Data.Sqlite wrapper from https://system.data.sqlite.org.
We use
> Le 18 avr. 2016 ? 15:10, Detlef Golze a ?crit :
>
> thank you for the hints. I think I do it correctly, I compiled with
> SQLITE_CONFIG_MULTITHREAD and attach the database with the URI option
> cache=shared.
Do you really *need* to use shared cache in favor of private cache?
There are more
Detlef Golze wrote:
> I attach the database with the URI option cache=shared.
This makes all threads share a single connection. Don't do it.
Regards,
Clemens
On 18 Apr 2016, at 2:10pm, Detlef Golze wrote:
> I compiled with SQLITE_CONFIG_MULTITHREAD
That bit's okay.
> and attach the database with the URI option cache=shared
Try turning that bit off and see if it results in an overall speed-up.
Simon.
> Le 18 avr. 2016 ? 14:17, Detlef Golze a ?crit :
>
> Hi,
>
> I am using SQLite C amalgamation version 3.08.11.01 compiled for Multi
> Threading Mode and using WAL Journal Mode.
>
> Sometimes I need to execute a SELECT statement which takes a very long time
> to complete. I realized that
I don't mean to poke a busy thread with a possibly stupid newbie question, but
here goes.
How is this that much different than say, the SQLITE_DEFAULT_FILE_FORMAT
compile option? (Pasting it here then continuing comment below)
Text pasted here
SQLITE_DEFAULT_FILE_FORMAT=<1 or 4>
Hi,
Do you know if there is a way how to get n-th column of row during
sqlite3_update_hook callback ? I saw there are (in experimental version)
some functions like sqlite3_preupdate_new that are able to get this
information during sqlite3_preupdate_hook but this is not in stable
version.
A by
> Detlef Golze wrote:
> > I attach the database with the URI option cache=shared.
>
> This makes all threads share a single connection. Don't do it.
>
>
> Regards,
> Clemens
That was indeed the problem. During my initial tests this option provided the
best performance. I probably need to
I had a similar thought, until I imagined
Program uses sqlite DLL
The program creates dbs, and sometimes does inserts with null primary
keys. (Why is beyond the scope, it just does sometimes.)
Upgrading the DLL would start making files in the new format, but the
program using the dll doesn't
On 4/18/16, Clemens Ladisch wrote:
> t18970237136 at web.de wrote:
after updating to 1.0.100.0 which uses SQLite 3.12.1, we are getting the
following error
SQLite error (1): AUTOINCREMENT is only allowed on an INTEGER PRIMARY
KEY
>>
>> The problem is ... the "[" and "]"
Hello Olivier,
thank you for the hints. I think I do it correctly, I compiled with
SQLITE_CONFIG_MULTITHREAD and attach the database with the URI option
cache=shared. Also, each connection is used by one thread at a time. But
another thread may reuse a connection - I hope that is allowed.
Are
> Le 18 avr. 2016 ? 12:30, Dan Kennedy a ?crit :
>
>> I am playing a bit with SQLite. I first had a table with 1E8 elements. When
>> trying to drop this it looked like SQLite got hung. I tried it from DB
>> Browser and a Java program.
>> I just tried it with a table of 1E7 elements. That was
Hi,
I'm getting a crash in the sqlite shell on Windows 7 in sqlite3 version 3.12.1.
I can reprduce it with the console commands
echo "SELECT 1;" > tmp.sql
sqlite3 :memory: -init tmp.sql >log
What seems to happen is that sqlite3_initialise is never called and
consequently the
Hi,
I am using SQLite C amalgamation version 3.08.11.01 compiled for Multi
Threading Mode and using WAL Journal Mode.
Sometimes I need to execute a SELECT statement which takes a very long time to
complete. I realized that during that time other functions are blocked for a
significant amount
You could use a binary PList or some other form of structured data -
the BPList blob could then contain, ints, floats, strings byte arrays
or even embedded binary plists. As it is a structured format then to
an extent it is self documenting (in terms of the stored data types)
Paul
On 18 April 2016 at 06:55, Cecil Westerhof wrote:
> ?I put a strace on it. This was what I got:
> Process 26455 attached with 20 threads
> % time seconds usecs/call callserrors syscall
> -- --- --- - -
> 99.80 11245.498406
On 4/18/16, Martin Trnovec wrote:
>
> Do you know if there is a way how to get n-th column of row during
> sqlite3_update_hook callback ? I saw there are (in experimental version)
> some functions like sqlite3_preupdate_new that are able to get this
> information during sqlite3_preupdate_hook but
2016-04-17 18:23 GMT+02:00 Simon Slavin :
>
> On 17 Apr 2016, at 5:13pm, Cecil Westerhof wrote:
>
> > Or is this normal
> > in Java programs?
>
> Yes. You're discovering that Java is rubbish. 'futex' for Java is what
> most environments call 'mutex' and Java doesn't do locking well. It's this
2016-04-17 21:59 GMT+02:00 Scott Robison :
> On Sun, Apr 17, 2016 at 1:44 PM, Cecil Westerhof
> wrote:
>
> > 2016-04-17 18:13 GMT+02:00 Cecil Westerhof :
> >
> > > 2016-04-17 17:13 GMT+02:00 Keith Medcalf :
> > > The strange thing is that the blob variant takes a lot of time now
> also.
> > >
25 matches
Mail list logo
