t size_t. There is of
course one notable caveat: MSC does not support inttypes.h/stdint.h BUT
there are free drop-in replacements available here:
http://code.google.com/p/msinttypes/
--
- stephan beal
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-tool=callgrind --callgrind-out-file='callgrind.out' ./myapp
and then feed callgrind.out to kcachegrind or similar to get enough
detailed statistics to keep you busy for days.
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- stephan beal
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http://gplus.to/sgbeal
_
On Sun, Jun 17, 2012 at 8:35 PM, Stephan Beal <sgb...@googlemail.com> wrote:
> Pedantic note: cin.get() will wait for ENTER to be pressed before
> returning, AFAIK. There is no portable way (in C/C++) to grab only the next
> keystroke from the console.
>
But i was in d
ER to be pressed
before returning, AFAIK. There is no portable way (in C/C++) to grab only
the next keystroke from the console.
> Now, my next step is to create data tables, but that will be on another
> email.
>
sqlite3_exec(), sqlite3_prepare(), sqlite3_bind_xxx(), sqlite3_step()
same way we described yesterday when you posted the
exact same question.
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xtra argument (??1) where the db handle ()
goes. The final parameter should be NULL unless you specifically know
otherwise (you would know if that were the case).
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http://wanderinghorse.net/home/stephan/
http://gplus.to/sgbeal
skipws;
std::istream_iterator begin(is);
std::istream_iterator end;
std::copy( begin, end, std::ostream_iterator(os, "")
now the contents are in os.str() resp. os.str().c_str().
--
- stephan beal
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___
thing. The preferred activity at
the moment seems to be a Fossil code sprint.
On Tue, May 15, 2012 at 6:20 PM, Stephan Beal <sgb...@googlemail.com> wrote:
> Hello, all,
>
> (i'm writing this post on behalf of/in conjunction with Richard,
> cross-posting to the sqlite and Fo
. The second is my current
preferred API but it is driver-agnostic, not sqlite3-specific. The CPDO C++
API is trivially simple to use, though. Feel free to contact me off-list
with questions.
Happy Hacking!
--
- stephan beal
http://wanderinghorse.net/home/stephan/
http
at 6:20 PM, Stephan Beal <sgb...@googlemail.com> wrote:
> Hello, all,
>
> (i'm writing this post on behalf of/in conjunction with Richard,
> cross-posting to the sqlite and Fossil mailing lists...)
>
> Management summary: DRH will be in Munich, Germany on July 3rd. Woul
her continents.
>
But those visiting this first time around will always be able to say, "we
saw him before he was famous!" ;)
Happy Hacking!
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Hi!
Did the call to sqlite3_close() _succeed_? It will fail (iirc) if any
statements are still open.
- stephan beal
http://wanderinghorse.net/home/stephan/
http://gplus.to/sgbeal
On May 24, 2012 2:33 PM, "Alfred Sawaya" <alfred.saw...@nadratec.com> wrote:
> Hello,
>
the API docs already say).
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ite3_unlock_notify().
#define SQLITE_BUSY 5 /* The database file is locked */
#define SQLITE_LOCKED 6 /* A table in the database is locked */
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sqlite-
tabase. Perhaps you can recommend a
good one? ;)
[5] = again, my words, not his ;)
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Keith, this type of detailed response is why i rate this list so highly
above most others. These are the threads i learn the most from :-D.
+1
Sorry for top-posting - writing on a phone.
- stephan beal
http://wanderinghorse.net/home/stephan/
http://gplus.to/sgbeal
On May 7, 2012 4:44 PM
On Mon, Apr 30, 2012 at 7:40 PM, Stephan Beal <sgb...@googlemail.com> wrote:
> "You cannot provide a table and column"
>
Ignore me, please - i'm confusing DB.TABLE with TABLE.COLUMN.
Sorry about that.
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must
be a single-column table. This final style is most
frequently used with temporary tables. If you need to
execute the same test multiple times, it can be more
efficient to build a temporary table (for example, with
CREATE TEMP TABLE...AS SELECT), and use it over and over,
umn table.
>
That seems to conflict with the diagram, which clearly shows db.table as
being an option:
http://sqlite.org/syntaxdiagrams.html#expr
about 80% of the way through that picture. Perhaps an improvement for the
3rd edition of the book (or for the syntax diagrams?).
--
- stephan bea
On Fri, Apr 27, 2012 at 10:00 PM, Tim Streater <t...@clothears.org.uk> wrote:
> delete from addressbook where absid=(select personnick from grouplinks
> where groupnick='27')
>
i think what you want is IN instead of =.
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ght not work is all speculation
about undefined behaviour. There is no "supported" solution, at least
according to the docs.
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sqlite-
spare time and
> the fix is not too expensive for them.
>
The second "important note" does not appear to be specific to the
amalgamation build. It appears to (in my interpretation) be making a
blanket statement about those options.
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- stephan beal
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ese options may be
removed from the code in future releases and without warning. For any
particular release, some of these options may cause compile-time or
run-time failures, particularly when used in combination with other options.
--
----- stephan beal
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http://
re-packaged C code files. SQLITE_OMIT_* compile-time options only
work correctly when SQLite is built from canonical source files.*
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sqlit
Try the sticky bit:
chown user:apache theDir
chmod 4775 theDir
:-?
- stephan beal
http://wanderinghorse.net/home/stephan/
http://gplus.to/sgbeal
On Apr 22, 2012 1:19 PM, "Steinar Midtskogen" <stei...@latinitas.org> wrote:
> Patrik Nilsson <nipatriknils...@gmail.com&
bout that. You could use a
> different thread of the same process, but of course "Threads are evil.".
>
In my experience every open() of :memory: is a difference instance? My hand
is injured, making typing difficult, so i won't try it out right now :/.
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http://
On Thu, Apr 12, 2012 at 6:07 PM, Sako Youssouf <
youssouf.s...@renault-trucks.com> wrote:
> # ar -rvs libsqlite3.a sqlite3.o
> # gcc -L. -lsqlite -L/usr/lib/ -ldl -lpthread -o compil compil.c
>
You're back to the first problem you had: linking against
/usr/lib/libsqlite.*
--
---
On Thu, Apr 12, 2012 at 5:31 PM, Sako Youssouf <
youssouf.s...@renault-trucks.com> wrote:
> Others ideas?
>
Can you paste in the last thing (or two) you tried? You might also try
passing -s to ar (it's equivalent to calling ranlib, from what i
understand).
--
----- steph
hat happens if you replace -l... -L... with sqlite3.o?
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On Thu, Apr 12, 2012 at 5:00 PM, Sako Youssouf <
youssouf.s...@renault-trucks.com> wrote:
> compil.c:(.text+0x6f): multiple definition of `main'
>
Remove shell.o from your libsqlite.a.
--
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http://gpl
IGGER14 /* Trigger NameTable Name
*/
#define SQLITE_TESTCTRL_RESERVE 14
sounds like the first one.
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ing -L. to your compile command?
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> at any point of time. In other words with this implementation your
> function may return incorrect value.
Thanks for that clarification. i incidentally removed it because it causes
a huge number of malloc()s in my test app.
--
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h
ome time last year, and i've just
always had it in the back of my mind (in the context of my db wrapper API).
i appreciate the link to the docs - that certainly clarifies it for me (as
a non-problem).
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__
?
>
On a full-blown machine you could use shared memory, probably. How about
using your :memory: db as the main one and simultaneously queue the commits
into an on-disk db which other apps would then read? (Or do they need to
also update the db?) They would be a little bit behind the master, of
co
an implementation in the fossil source repo:
http://fossil-scm.org/index.html/artifact/41357470cd8b147dcea8c684ed131ebf29643650?ln=53-105
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type='table';
type|name|tbl_name|rootpage|sql
table|t1|t1|2|CREATE TABLE t1(a)
table|t2|t2|3|CREATE TABLE t2(a)
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ht
On Wed, Feb 22, 2012 at 11:14 PM, Petite Abeille
<petite.abei...@gmail.com>wrote:
> http://www.sqlite.org/lang_keywords.html
>
@sqlite3 committers: there's a minor error on that page: is says "There are
three ways of quoting..." and then goes on to show four ways.
--
-
SQL statements terminated with a ";"
sqlite> create table t([Col 1]);
sqlite> .h on
sqlite> insert into t values('a');
sqlite> select * from t;
Col 1
a
sqlite> select [Col 1] from t;
Col 1
a
Hope that helps,
--
- stepha
Or you can use the ATTACH command to
connect multiple database files at once:
http://www.sqlite.org/lang_attach.html
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(e.g. JavaScript engines traditionally don't) then using double is an
option.
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ns the raw sqlite3 handle
then you can use
http://www.sqlite.org/capi3ref.html#sqlite3_create_function
on that handle to register the functions (do this right after opening the
db if at all possible). If it does not provide such a handle then you're
out of luck :/.
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To expand on Simon's warning about types: any given column can contain
different types in different rows in sqlite, so examining just the first
row to get the types is not necessarily reliable (but may be for any given
app, depending on how the app inserts/updates data).
- stephan beal
http
Hi!
Check the column count after sqlite3_prepare(). You don't need to execute
the query to get the column count.
- stephan beal
http://wanderinghorse.net/home/stephan/
http://gplus.to/sgbeal
On Feb 14, 2012 5:50 PM, "Marc L. Allen" <mlal...@outsitenetworks.com>
wrote
.
Feel free to contact me off-list with questions.
- stephan beal
http://wanderinghorse.net/home/stephan/
http://gplus.to/sgbeal
On Feb 7, 2012 7:53 AM, "Truls Haaland" <trul...@yahoo.com> wrote:
> > Hello everyone,My project used sqlite3x, a sqlite c++ wrapper. No
trictly legal in C++.
>can see any more i think, that the program do no enter to any >method.
And please show us what the DBG macro expands to - maybe the problem is in
the first DBG() call?
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On Fri, Feb 3, 2012 at 8:25 PM, Stephan Beal <sgb...@googlemail.com> wrote:
> i take that back - if that were the case then the crash would almost
> certainly happen later on (after your init routine returns). But it still
> can't hurt to try.
>
But please try this:
On Fri, Feb 3, 2012 at 8:22 PM, Stephan Beal <sgb...@googlemail.com> wrote:
> sqlite3_declare_vtab()[1] does not document the lifetime requirements of
> the string passed to it, and it's "conceivable" that the lifetime of the
> table_structure string is the pro
ust guessing here);
std::cerr << "virtual_table_name="<http://www.sqlite.org/c3ref/declare_vtab.html
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http:
>
That's the reason for the crash but not the backtrace, so i can't say what
let up to the crash, but the "Reason" part is telling - the address 03b8 is
invalid. Are you sure you've properly initialized all of the
memory/variables in initialize_niurouting()?
--
- stephan beal
http
sqlite3 dbfile
then run it as normal until it crashes, then type "bt" to get a backtrace.
That will show what led up to the error.
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But finding out exactly where it fails requires either adding debug output
to the plug or running it (in this case the sqlite shell) through a
debugger.
- stephan beal
http://wanderinghorse.net/home/stephan/
http://gplus.to/sgbeal
On Feb 3, 2012 4:35 PM, "Jorge Eliécer Osorio
i dont know how it happend its my code:
>
> http://paste.ideaslabs.com/show/OPNHBY7xPG
A segfault can be caused by at least 300 million different things. The
easiest way to figure out where the problem is is to run your app through
gdb (or equivalent) and get a backtrace after
Google for " sqlite3_column_type".
----- stephan beal
http://wanderinghorse.net/home/stephan/
http://gplus.to/sgbeal
On Feb 2, 2012 8:22 AM, "bhaskarReddy" <uni...@gmail.com> wrote:
>
> Hi Friends,
>
> I have to find a type of a value in s
p://www.sqlite.org/capi3ref.html#sqlite3_open
sqlite3_open_v2() has the ability to require that a DB exists before it is
opened.
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sqlite-use
ohn Elrick's determination and
stamina have been a treat to watch. IMO he should be made an honorary
member of the dev team (or at least get a coffee mug).
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; first place!!
Lol! Fair enough.
> http://www.adp-gmbh.ch/sqlite/**bind_insert.html<http://www.adp-gmbh.ch/sqlite/bind_insert.html>
>>
> Ha!! That example doesn't use the destructor arg.
>
It does, actually: it uses SQLITE_STATIC, which is a no-op function with
the signatu
nd_blob
though it is admittedly somewhat confusing that one passes a (char const *)
as opposed to (char *) even when expecting (depending on the value of the
last parameter) it to be freed.
Here's an example of its usage:
http://www.adp-gmbh.ch/sqlite/bind_insert.html
--
----- st
On Mon, Jan 23, 2012 at 7:01 PM, dotolee <woo_ju...@yahoo.com> wrote:
> can you point me in the right direction?
> aka. what data type am i using to store the date in my sqlite database? is
> TEXT correct?
> how do I do a select on it?
>
http://en.wikipedia.org/wiki/Unix_ti
.
IMO Unix timestamps are the most portable form out there. "Portable"
meaning, in this context, the ability to work with them (more or less
easily) in a wide variety of contexts.
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_
wording implied the opposite).
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On Mon, Jan 16, 2012 at 8:02 PM, Bill McCormick <wpmccorm...@gmail.com>wrote:
> I assume that you are *NOT* naming the few that don't, rather these
> scripting languages *DO* have sqlite3 binding support.
Yes, sorry - a bad choice of wording on my part. :/
--
----- steph
JavaScript (v8 and SpiderMonkey engines)
- Python
...
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le uploads in each transaction then of course it will be slow. You also
haven't told us what type of storage you're using. Someone posted recently
about a server process which writes to an SD card (which is bound to be
somewhat slow).
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- stephan beal
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http
other clients. i think what you
want is load_extension:
http://sqlite.org/lang_corefunc.html
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Try:
# export LD_LIBRARY_PATH=/path/to/your/libs:$LD_LIBRARY_PATH
# your commands here...
(sorry, i'm on a mobile phone lying in bed or i'd be more
specific/detailed!)
- stephan beal
http://wanderinghorse.net/home/stephan/
On Jan 5, 2012 12:07 AM, "Tilsley, Jerry M." <
rmed
on a build where that kludge was _not_ used. If the build linked to one
copy of libtcl but is trying to use a different one at runtime, a segfault
would almost certainly result.
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___
ame user attaching to it multiple
times concurrently.
> . how can one achieve it like in sqlserver etc
sqlite3 is not a client-server db, and is missing several features which
you may be assuming it has. See:
http://sqlite.org/whentouse.html
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ect your use of sqlite3 (unless of course you are on a very
space-constrained device).
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4*
-rw-r--r-- 1 root root 726308 Feb 25 2011 /usr/lib/libtcl8.4.so.0
As a quick workaround, you can simply create a symlink to it, e.g.:
# sudo su -
# cd /usr/lib
# ln -s libtcl8.4.so libtcl8.4.12.so
that is of course philosophically arguable, but it might get your build
working.
--
- st
For example:
echo "123" >> mydbfile
that could effectively corrupt it even though it doesn't actually modify
any bytes used by the db. (Whether or not that _does_ corrupt it depends
largely on how sqlite3 tracks the logical end-of-file.
hich sqlite API you want to use. There are 2 or 3 active sqlite
APIs for PHP (i personally prefer PDO but others on this list can/will
likely recommend other APIs).
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On Wed, Nov 2, 2011 at 1:11 PM, Stephan Beal <sgb...@googlemail.com> wrote:
> about undefined behaviour is true in that case, but i am 100% convinced
> that i've seen that usage cause problems before. Perhaps it was the
> compiler in question (one of the MSVC variants) which mad
standard.
In any case (undefined or not), calling ostringstream::str() twice there is
unnecessary, and downright inefficient if the user's STL does not use CoW
(all of them do, AFAIK, but that's an implementation detail clients
shouldn't count on).
--
- stephan beal
http://wanderinghors
you can use
std::ostringstream as a replacement for sprintf():
std::ostringstring q;
q << "SELECT " << x << " ... ";
dbStatements.push_back( q.str() );
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- stephan beal
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_
() and s.size() instead of query.str().xxx().
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ago and someone (don't remember who)
pointed out that platforms exist which can return >0 from read() when
interrupted. My man page says:
POSIX allows a read() that is interrupted after reading some data to return
-1 (with errno set to EINTR) or to return the number of bytes already read.
--
;;
There's no reason why the overhead of sprintf() should be applied to a
string which contains no formatting specifiers.
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On Fri, Oct 21, 2011 at 1:05 AM, Prashant Prabhudesai <
prashantprabhude...@gmail.com> wrote:
> $row = $res->fecth();
>
...
After the script exits successfully I inspect the value in the Token column
>
Are you 100% sure the above command executes correctly?
--
-
when locking was enabled, even though
it only made a few lock/unlock calls.
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On Wed, Oct 19, 2011 at 9:23 PM, Stephan Beal <sgb...@googlemail.com> wrote:
> race conditions, unclean network connection errors, blah blah blah. That
> goes for all applications, not just databases.
>
>
And not just for CIFS, but NFS and other networked filesystems as well.
that file locking on networked
filesystems has, historically speaking, always been problematic.
Communicating the locks between separate machines, race conditions, unclean
network connection errors, blah blah blah. That goes for all applications,
not just databases.
--
- stephan beal
http://w
On Tue, Oct 18, 2011 at 12:37 PM, Sune Ahlgren <sune_ahlg...@hotmail.com>wrote:
> What can I do to make SQLite run safely on CIFS?
>
Nothing. Even MS Access cannot (or could not way back when i used it) be
safely used on SMB/CIFS storage.
--
----- stephan beal
http://wanderingho
t (whereas the version you post is providing the name
"memory:", which is not correct).
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is one.
>
Some things to try:
Can you open the file with the command-line sqlite3 client? Is the file
still there? Are the file permissions still correct (readable by your
server's user id)?
--
- stephan beal
http://wanderinghorse.net/home/stephan/
__
; to do just by reading the SQLite C documentation.
>
Amen.
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here something I'm obviously doing
> wrong?
>
http://www.php.net/manual/en/pdo.query.php
says:
Executes an SQL statement, returning a result set as a PDOStatement object
"an" is singular, and result set implies a single statement.
--
- stephan beal
http
l
injection attack" and then read up on PDO::prepare() for how to avoid that
problem:
http://php.net/manual/en/pdo.prepare.php
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e if it's NULL (which you of course must initialize
it to, or else it has an unspecified value).
sqlite3 * db = NULL;
int rc = sqlite3_open(, );
if(rc) { ... error ... ; sqlite3_close(db); }
else {
sqlite3 is open
}
After you close it, assign it to NULL again, and there's your "is ope
a signal is caught or whatever.
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a process is
independent of each other. At least that was my experience when i tried it
out a few years ago.
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say
"unlimited", is your db (or the amount of data being queried at one time)
anywhere close to the size it gives out? From my (very limited)
understanding of mmap(), it uses(?) the same address range as malloc() would
[have if mmap() hadn't stolen it].
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se undefined
behaviour, as described earlier).
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brary from many apps.
>
A tiny expansion to that: someone recently reported a problem when serving a
singleton db instance from a DLL (he was getting 2 different instances of
the singleton, IIRC), but that's not an sqlite3-specific problem.
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lgamation in my tree works around
that.
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On Thu, Sep 22, 2011 at 4:16 PM, Magnus Thor Torfason <
zulutime@gmail.com> wrote:
> SQLite version 3.3.6
>
Just to preempt the inevitable request to try it on a current version: this
is reproducible on 3.7.2 (Ubuntu 10.10).
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----- stephan beal
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On Thu, Sep 22, 2011 at 2:04 PM, Jay A. Kreibich <j...@kreibi.ch> wrote:
> The PK (first column). The CREATE TABLE showed it as an INTEGER
> PRIMARY KEY
Ah, indeed. i skipped that and looked at the unique index :/.
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----- stephan beal
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any
duplicates (all have a unique 3rd column value).
...
> Here the dn name is unique but still i am seeing duplicate dn names.
>
Please show us the duplicates.
i don't see any dupes in your inserts and you didn't present any SELECT data
which shows duplicates.
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te 3.7.7.1, the keys in each result row do
> not include the table name in the key, but are solely the column name. Is
> this expected?
>
Yes, it's expected and well documented. The names of ANY columns is
UNSPECIFIED unless you use an AS qualifier to give them the names you want.
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-
do to work around
it. Other database engines have also run into this same problem."
But notice those last two sentences.
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