any idea ?
Your application have race conditions and corrupts memory.
Pavel
On Wed, Apr 6, 2011 at 2:36 PM, Vander Clock Stephane
svandercl...@yahoo.fr wrote:
hello,
in heavy multithread environnmeent we receive (one time a month, so not
very often), this error :
Access violation at
:
- sqlite3async_run()
Pavel
On Tue, Apr 5, 2011 at 1:45 PM, Ricky Huang rhhu...@soe.ucsd.edu wrote:
On Apr 4, 2011, at 7:10 PM, Pavel Ivanov wrote:
Can someone be so kind as to provide a short example of initializing
asynchronous module, opening DB for read/write, create a table, and write
some data
I can create the dll, but it does not work with BLOB data type. It works
with other data types. The dll that I downloaded from the sqlite.org website
works with BLOB data type.
Any help would be appreciated.
Any pointers on what doesn't work for you and how it works instead of
intended
, and null is
being written to that column. When I build my application on linux,
everything works just fine. But, on windows, it works fine the downloaded
sqlite dll but not with my own dll.
Pavel Ivanov-2 wrote:
I can create the dll, but it does not work with BLOB data type. It works
Can someone be so kind as to provide a short example of initializing
asynchronous module, opening DB for read/write, create a table, and write
some data to it?
There's nothing special in opening db, creating table or writing data
into it while using async module. You should use the same API
... that is to say, update table_a.value from table_b.value, but only
on rows where table_a.key = table_b.key
update table_a set value =
(select table_b.value from table_b where table_b.key = table_a.key)
Pavel
On Fri, Apr 1, 2011 at 8:42 PM, Robert Poor rdp...@gmail.com wrote:
I'd like to
http://sqlite.org/c3ref/step.html . See Goofy Interface Alert section
at the bottom.
I believe it was changed with recent versions of SQLite. Is call to
sqlite3_extended_result_codes
(http://www.sqlite.org/c3ref/extended_result_codes.html) not needed
anymore?
Pavel
On Thu, Mar 31, 2011 at
Yes, but I can not affect column type ... FreePascal SQLite3 connector must
be able to work with any user database.
If your goal is to work with any user database created outside of your
FreePascal connector then chances are that user will use the same
database outside of your FreePascal
Is there way how to store numeric values, which are out of REAL range ?
SQLite has no way of storing numbers other than REAL or INTEGER. If
you want the exact number to be stored your only option is to store it
as TEXT (and don't work with it as a number on SQL level).
Pavel
On Tue, Mar 22,
You can use a simple CREATE TABLE (without IF NOT EXISTS clause). If
it succeeds then you populate table with data (remember to do that in
the same transaction where you created the table). If CREATE TABLE
fails then you don't insert your data.
Pavel
On Mon, Mar 21, 2011 at 6:04 PM, Erich93063
What's wrong with compiling SQLite library by yourself with all
parameters you need?
Why do you need cross-compiler for that? What's wrong with compiler on
your linux box?
Pavel
On Fri, Mar 18, 2011 at 10:54 AM, Udon Shaun udon_sh...@yahoo.com wrote:
Hi Peeps.
I've noticed that the SQLite site
Oh, and BTW, reply to the whole list, not to me only, please.
Pavel
On Fri, Mar 18, 2011 at 9:41 PM, Pavel Ivanov paiva...@gmail.com wrote:
I still don't understand what you do. If you don't have Linux, you
don't compile on Linux and you don't test on Linux then why do you
need library
My tests show that, counter-intuitively, the second query takes between
3 and 5 times as long as the first query.
This seems weird to me - any ideas why this would be?
What does EXPLAIN QUERY PLAN for both queries say? And what SQLite
version do you use?
Also do you understand that '?'
Try this one:
select * from (select * from multiturnTable order by rowid desc limit 5000)
where (player1 = ? or player2 = ?)
and (complete=0 or p1SubmitScore=0 or p2SubmitScore=0)
Pavel
On Mon, Mar 14, 2011 at 1:58 PM, Ian Hardingham i...@omroth.com wrote:
Ah, sorry about this - my query is
http://lmgtfy.com/?q=SQLITE_ENABLE_UPDATE_DELETE_LIMIT+site%3Asqlite.orgl=1
If you look for description of SQLITE_ENABLE_UPDATE_DELETE_LIMIT on
the resulting page you'll see that it's not a bug or oversight, it's a
documented feature.
Pavel
On Sun, Mar 13, 2011 at 2:46 PM, Steven Hartland
Is there any sqlite function I can call, or some other technique, to reduce
the memory allocated and hung-onto by sqlite, particularly during a VACUUM?
Yes, execute pragma cache_size = 100 for example, or put other
number of your liking into there.
If closing and re-opening of the database
A favorite interview question is, given this line and no other
information, how big must buf_size be to never clip the output?
You can assume the default 1.6 precision (%1.6f).
snprintf( buf, buf_size, %f, v );
The answer? At least 318 characters.
This is very interesting. Jay, could
PM, Jay A. Kreibich j...@kreibi.ch wrote:
On Thu, Mar 03, 2011 at 11:06:33AM -0500, Pavel Ivanov scratched on the wall:
?A favorite interview question is, given this line and no other
?information, how big must buf_size be to never clip the output?
?You can assume the default 1.6 precision
I believe sqlite3_get_autocommit is what you need:
http://www.sqlite.org/c3ref/get_autocommit.html.
Pavel
On Wed, Mar 2, 2011 at 12:32 PM, Philip Graham Willoughby
phil.willoug...@strawberrycat.com wrote:
Hi all,
I use SQLite in an iPhone application, and for my own convenience I have
Your examples suggest that actually sqlite3-bind_text is not
accepting std::string, not sqlite3_prepare_v2. But how exactly it
doesn't accept?
You pass SQLITE_STATIC as 5th parameter there; are you sure you don't
destroy or change your strings before statement is executed?
Pavel
On Tue, Mar 1,
i also took the same statement and tried to run it in our app in a
method called as soon as the application launches, and it fails. so we have
something going on at a different level.
I suspect that as soon as the application launches means that no
parallel threads are working yet
From my debugging efforts, the issue appears to be that the process entered
the sqlite library at some point in its operation, acquired a read lock, and
returned from the library, but failed to release the read lock. Under what
circumstances can this occur?
This is a normal behavior for
The reason could be caching, swapping or things like that. When you
execute 4 queries concurrently in different connections each of them
have to create its own memory cache of database pages. Reading data
into cache involves syscalls to Linux kernel for reading from disk.
Although Linux has its
There are several problems:
1) You wrote to the wrong list. sqlite-dev is for those who develop
SQLite, sqlite-users is for those who develop using SQLite.
2) You didn't say what problem you have with that piece of code.
3) You didn't call sqlite3_step() after sqlite3_bind_text() to
actually
Is SQLITE_FCNTL_CHUNK_SIZE what you are looking for? See more
information about it here:
http://www.sqlite.org/c3ref/c_fcntl_chunk_size.html. Notice that this
feature appeared only in recent version of SQLite, so if you have some
earlier version you won't be able to control it and SQLite will
sending , my problem is that No update happened , I
also I read about sql_step , but I couldn't understand how to apply it ,
they said you should run it several times
Best regards
On Tue, Feb 22, 2011 at 3:24 PM, Pavel Ivanov paiva...@gmail.com wrote:
There are several problems:
1) You wrote
Please reply to the list, not to me only.
It's impossible to set chunk size to percentage of the database size,
you can only set a constant value.
Pavel
On Tue, Feb 22, 2011 at 9:13 AM, Sven L larvpo...@hotmail.se wrote:
Thanks a lot! :D
What do you think of setting the chunk size to
I don't know what's the best value for chunk size. I'm not even sure
that it's useful to set it to any value at all. So let your test
results guide you. The only thought I have is the chunk size should be
a multiple of page size (don't know if SQLite's code rounds up to such
multiple internally).
Could you please explain what is Oracle compatibility mode? And how
can anyone make an attempt to use it for SQLite if SQLite doesn't have
such feature?
Pavel
On Tue, Feb 22, 2011 at 9:28 PM, Phil Oertel philli...@gmail.com wrote:
Hi sqliters,
After a recent failed attempt to use SQLite as
I find especially the *-wal access attempt pretty strange as we do not have
WAL enabled for our database: it is set to the default journal mode (DELETE).
Is this normal behaviour? Or is this influenced by some setting I don't know
of?
I think when SQLite opens the database it can't trust
I believe doubling the single quote inside the string literal should help.
Pavel
On Sun, Feb 20, 2011 at 2:23 PM, Sam Carleton
scarle...@miltonstreet.com wrote:
This is a bit crazy and I know the ideal way would be to not allow the
apostrophy in the first place but, my focus is easy of use
Nico, it looks like your don't understand what you are saying.
Windows and Unix processes and threads have similar semantics, and thus
roughly comparable performance envelopes.
Windows processes and threads don't have similar semantics, unix
processes (and threads) are not comparable to
/HOWTO/Secure-Programs-HOWTO/avoid-vfork.html.
Pavel
On Sat, Feb 19, 2011 at 4:42 PM, Nico Williams n...@cryptonector.com wrote:
On Sat, Feb 19, 2011 at 1:45 PM, Pavel Ivanov paiva...@gmail.com wrote:
Nico, it looks like your don't understand what you are saying.
I think you misunderstood what I
I'd appreciate it if anyone could let me know if this pragma still
works and how to use it if so.
You can get away without pragma. Just implement your own VFS which
will redirect all calls except lock-related to the standard VFS.
Lock-related methods would be implemented as no-op and thus won't
So my question is, does it maintain the other 3 parts of ACID, so that
the database will never be in a corrupted state after a power loss,
even though it may be missing some writes that were confirmed?
Jim, I think the answer to your question is already in Max's tests:
the USB drive is
I do a transaction on connection 1 using BEGIN IMMEDIATE, some rows updated,
COMMIT.
Then, when I attempt same sequence on connection 2, when I do first call to
step
to execute begin transaction and it never returns.
Do you check result code from COMMIT and is it successful? My guess is
you
Just wondering, are the wal and shm files suppose to stick around after the
process exits?
They should disappear when you call sqlite3_close() for the last handle.
And if your process exits without calling sqlite3_close() then those
files are supposed to stick around.
Pavel
select [a] from (select * from x);
You'll get the following buggy output:
[a]
1
It's not buggy. Name of the column in result set is not defined
unless you use as.
CREATE TABLE y([a] INT);
I came across this issue as statements like the following failed with the
Zaryab,
There's no need to repeat your email several times.
Question1: Can I have multiple connections opened for each thread to
the same in-memory dbase.
No. Each connection to :memory: creates unique in-memory database
which will be deleted when that connection is closed.
x);
select a a from (select a from x);
I consider this a bug.
Bye.
--
Reinhard Nißl
-Ursprüngliche Nachricht-
Von: sqlite-users-boun...@sqlite.org [mailto:sqlite-users-boun...@sqlite.org]
Im Auftrag von Pavel Ivanov
Gesendet: Donnerstag, 10. Februar 2011 13:48
, Zaryab M. Munir zaryabmu...@yahoo.com wrote:
Thanks, my reply inline:
Sincerely,
Zaryab
--- On Thu, 2/10/11, Pavel Ivanov paiva...@gmail.com wrote:
From: Pavel Ivanov paiva...@gmail.com
Subject: Re: [sqlite] SIGSEGV Error when using sqlite3_exec( )
To: General Discussion of SQLite Database
but I am wondering if there is any
(somewhat) easy way to get direct fd access and maintain asyncronicity without
threads.
How do you see it's possible? Even if we assume that all files were
opened in async mode and only aio functions were used what would that
mean? You are calling
Mabye one of our experts can explain why distinct takes to long.
Seems to me if you have an index you're just returning the values in the
index, aren't you?
If index is unique then you just count number of values in the index
and that's it. If index is not unique then it contains many
i'm not sure at all it's practical to create an 80MB string with one giant
SQL statement in it to send all that data at once.
80MB string is not too bad after all (probably even less than 1% of
the whole memory). So you better do it this way. BTW, it won't be one
SQL statement, it will be 40k
presuming this timeline is chronological, may i assume that step 4 is
committed first in the database?
You mean as a third transaction? No.
and that steps 5 and 6 operate independently?
No.
even when threads 1 and 2 open their individual transactions, i see only ONE
journal file
i understand that one commit will block all other threads from doing a
commit, rollback or any atomic transaction, until it's done, but are you
saying i can't even add data on another thread while one has an open
transaction?
There can be several simultaneous read-only transactions. But as
. And it had no problems. IIRC, there were
examples of such behavior on this list too, also no problems were
reported. So maybe this is really old stuff.
Pavel
On Thu, Feb 3, 2011 at 1:59 PM, Ulrich Telle ulrich.te...@gmx.de wrote:
Am 03.02.2011 15:53, schrieb Pavel Ivanov:
It seems
What problems did you meet when you tried to do what you want?
Pavel
On Thu, Feb 3, 2011 at 4:39 AM, Stefano Mtangoo mwinjili...@gmail.com wrote:
Hi,
I use SQLite3 with wxSQLite3 wrapper and all is fine until I wanted to
shift the DB thing into the secondary thread.
What I want to do is
result in problems.
---
So what advice do you give me in such need that are thread safe? Any
other approach?
On 02/03/2011 03:09 PM, Pavel Ivanov wrote:
What problems did you meet when you tried to do what you want?
Pavel
On Thu, Feb 3, 2011 at 4:39 AM
Instead use operating system commands to retrieve the full path to the first
file, then construct a full path to the second file.
But if a I have an arbitrary SQL script/procedure to perform, that starts
with an attach statement, I don't have creation control over the path
specified in
Thanks. I understand this. But my file will be on a read-only medium.
So no other connection opening for writing is not possible.
SQLite doesn't know if media is read-only, or is not accessible for
writing for current user, or whatever else. So sorry, locks will
persist and no speed-up for
(1) Is there any API I can/should use to predictably get the name of
the journal file so that I can delete it, without knowing what is should be?
Suffix -journal is hardcoded and won't change in the future to keep
compatibility (journals left by any previous version should be read by
AFAIK, this was fixed in versions after 3.6.23. See
http://www.sqlite.org/src/info/f3162063fd and
http://www.mail-archive.com/sqlite-users@sqlite.org/msg51588.html.
Pavel
On Fri, Jan 14, 2011 at 9:48 AM, Simon Slavin slav...@bigfraud.org wrote:
I've never seen this before. In my application I
There are some challenges, for example to allow arbitrary undo
operations we should also log transaction boundaries since undoing to some
points in between not only makes little sense, but also dangerous. But I
think if implemented with those challenges solved, such implementation would
help
On Fri, Jan 14, 2011 at 1:31 PM, Max Vlasov max.vla...@gmail.com wrote:
On Fri, Jan 14, 2011 at 8:55 PM, Pavel Ivanov paiva...@gmail.com wrote:
There are some challenges, for example to allow arbitrary undo
operations we should also log transaction boundaries since undoing to
some
points
When we do execQuery:
1. Does sqlite fetches complete result of query and keep it in separate memory
2. OR Does sqlite fetches result of query in chunks, when we use
sqlite3_step and keep it in separate memory
3. OR Does sqlite fetches records one by one, when we use sqlite3_step
Number 3
Is there a way to do this today? How hard would it be to add commit to
savepoint if not?
It's impossible to do the thing you want in SQLite. And it won't be
feasible to add that.
What you really want is for database engine to allow to have two
parallel writing transactions and for it to not
so i guess it's because the windows cache in memory the database file ?
If you launch your application again then yes it's OS disk cache. If
you execute same query later in your application without stopping it
and maybe even without closing connection to SQLite database then it
could be SQLite's
For example: the INSERT inserts a row into table and invokes
registered ON INSERT (AFTER) trigger.Would the state of database lock
be RESERVED (presuming there is space in cache)?
Trigger is always executed inside the same transaction as the
statement causing trigger to execute. So, yes the
Can you tell us what is producing that log text you found ?
I am developing network appliances using EZchip network processors and
for implementing some backend code I recently switched to SQLite.
Mmm. Well, it could be overwriting some of your memory, or overwriting the
filespace. My bet
You may probably already know this but maybe I'll remind you. The pointer
returned by c_str() is only valid in the statement where it is used or
possibly
as long as the life of the basic_stringchar it came from.
Good catch, Jeff! I thought it's so obvious that I didn't even
consider that as
:36 Pavel Ivanov said the following:
Can you tell us what is producing that log text you found ?
I am developing network appliances using EZchip network processors and
for implementing some backend code I recently switched to SQLite.
Mmm. Well, it could be overwriting some of your memory
]
On Behalf Of Pavel Ivanov
Sent: Friday, December 17, 2010 4:44 PM
To: General Discussion of SQLite Database
Subject: Re: [sqlite] Troubleshooting...
So you can see that when I add the hard-coded data, everything looks fine
in the
results of the select statement, which leads me to believe
, john darnell
john.darn...@walsworth.com wrote:
-Original Message-
From: sqlite-users-boun...@sqlite.org
[mailto:sqlite-users-boun...@sqlite.org]
On Behalf Of Pavel Ivanov
Sent: Thursday, December 16, 2010 2:53 PM
To: General Discussion of SQLite Database
Subject: Re: [sqlite
and UTF16 output.
Does SQLite3 have problems dealing with basic_strings?
R,
John
-Original Message-
From: sqlite-users-boun...@sqlite.org
[mailto:sqlite-users-boun...@sqlite.org]
On Behalf Of Pavel Ivanov
Sent: Friday, December 17, 2010 9:22 AM
To: General Discussion of SQLite
std::string strText = GetWindowsTitle(...);
the GetWindowsTitle occupied sometime with the umlaut.
so how will you do, if you want save std::string into sqlite with keeped
umlaut?
My bet would be that GetWindowsTitle (even if it's not GetWindowTitle
from Win32 API) returns string to you in
Once I bind the data to the Insert statement, how can I look at the final
statement to see what I have done wrong when the statement does not work?
There's no way to do that. You should print what you bind yourself.
For me it looks like you insert into database some UTF-8 string and
then try
:
Hello Pavel,
Thanks.
The substr() compares the first character only.
For example, if the data is [CAT=$, CAT1$], it has to be sorted as
[CAT1$, CAT=$] because when '=' and '1' are compared, '1' has to come first.
Thanks for any suggestions.
-Harish
Pavel Ivanov-2 wrote:
If you want to do
If you want to do that completely in SQL without using collations you
can do something like this:
select name,
case when substr(name, 1, 1) between 'A' and 'Z' or
substr(name, 1, 1) between 'a' and 'z'
then upper(name)
when susbtr(name, 1, 1) between '0' and '9' then '|' ||
Given that even with LIMIT 2, the entire table's data might be read into
memory, what's the fastest/lightest method of finding the id of the next (or
previous) record ?
I believe your conclusion here is slightly wrong. SQLite reads whole
table into memory and processes all rows only if it
To use OFFSET ... LIMIT ... you need to know row number, not the id of
a particular row.
And in this case SQLite indeed must scan all records up to a requested one.
Pavel
On Tue, Dec 14, 2010 at 12:35 PM, Simon Slavin slav...@bigfraud.org wrote:
On 14 Dec 2010, at 5:22pm, Pavel Ivanov wrote
I couldn't understand, development environment is 32-bit version. However,
production environment is 64-bit version.
Do you by any chance try to use the same sqlite3 library from both
environments? 64-bit applications cannot load 32-bit dlls into them.
So you need to compile a 64-bit version of
Given that the WAL index is mmap'ed, you're unlikely to see improvement
in performance by storing it in heap memory. Reads/writes will go at
main memory speeds once mapped into your address space, and under memory
pressure, it will be no slower than if the heap was pushed to the swapfile.
I'd like to know if there are differences between the optimizers in the
sqlite in-memory DB and on disk DB.
No, there's only one optimizer in SQLite.
Is there a way to narrow down the measurement of time to see where the time
is spent?
How do you want to narrow it down? Maybe you want to
On Fri, Dec 10, 2010 at 10:05 AM, Christian Smith
csm...@thewrongchristian.org.uk wrote:
On Fri, Dec 10, 2010 at 09:49:46AM -0500, Pavel Ivanov wrote:
Given that the WAL index is mmap'ed, you're unlikely to see improvement
in performance by storing it in heap memory. Reads/writes will go at
main
Did you try a compound index?
Given WHERE conditions wouldn't have any benefit from compound index -
only first column will be used anyway.
Pavel
On Fri, Dec 10, 2010 at 10:11 AM, Jim Morris jmor...@bearriver.com wrote:
Did you try a compound index?
it's sad that this simple select is not possible under sqlite3 :(
This query is not so simple as you think, it requires pretty
complicated advanced techniques to be executed differently than SQLite
executes it. And even using those techniques you are not guaranteed to
have good performance - it
I Writed A FULL OUTER JOIN Query In Sqlite But I Got A Message Like Not
Supported. What Should I Do To Do This
You should re-think once more: do you really need a full outer join?
Maybe you can change your schema so that it was more clear and didn't
require full outer join for querying.
Pavel
'));
}
sql_exec(conn, END TRANSACTION);
sql_exec(conn, PRAGMA wal_checkpoint);
sqlite3_close(conn);
return 0;
}
On 29/11/2010 5:13 PM, Pavel Ivanov wrote:
Well, I love sqlite, and I want to continue using it (small, fast,
reliable ...).
I think it is better to solve such problems inside
Makes no difference. Doing an UPDATE inside your SELECT violates the rule no
matter how you structure your transaction. A SELECT is a single operation
and you can't do anything else until it is finished.
I didn't see in OP's email any information on whether he updates the
same rows or same
Another question - What kind of impact does a limit clause have? The columns
being used in the where clause are indexed. My current design is bad, I am
forced to use limit to get one row at a time. Since I have an index the
impact should be minimal. Please let me know if I am wrong.
You
1) How expensive is a call to sqlite3_open. Does a call to
sqlite3_enable_shared_cache make it cheaper?
Its cost depends on the size of your schema as it gets parsed during
open. Shared cache doesn't make it cheaper. It can make somewhat
cheaper (in some cases) to use several connections to
1) How expensive is a call to sqlite3_open. Does a call to
sqlite3_enable_shared_cache make it cheaper?
Its cost depends on the size of your schema as it gets parsed during
open.
Isn't this contradictory with an answer by Igor made in a recent thread?
It's not contradictory. I say that real
Well, I love sqlite, and I want to continue using it (small, fast,
reliable ...).
I think it is better to solve such problems inside sqlite
It's impossible. Just try to design the solution you want. Think of
how SQLite should behave to make you happy, think of it with all
details and don't
So, if you have a large scale system, you have two choices: block during
the checkpoint, or suffer from huge WAL file (and a crash if the file is
too big).
For a large scale system you have a third choice: use some other RDBMS
which is implemented in one process and has a much better control
Could there be any other
consequences like unpredictable behavior and such?
Yes, it will be unpredictable and undefined behavior.
I can't say exactly how SQLite will behave in such situation. What I
know is it doesn't execute all select at once, it fetches row by row
on each sqlite3_step call
Would it be possible to create an in-memory database and fill it from a byte
stream or a file?
If your Java driver allows you to attach your own VFS (Virtual File
System) then you can achieve your goal using it. Otherwise there's no
way to do that.
Pavel
On Mon, Nov 22, 2010 at 9:42 AM,
I do not set anything for the application defined page cache, so
what is the behavior of the default one?
Default implementation of page cache uses all the size you said it to
use and in some cases even more. So don't worry about that. Just
remember that cache_size is not a global setting, it's
I'd say the performance of a local in-process cache can be comparable
with performance of OS cache only in one case: if your process is the
only process in the system and no other files are read from disk. In
all other (common) cases OS caches much larger set of data than is
used by SQLite and
for value in SELECT main_column IN mytable:
UPDATE mytable SET other_column='foobar' WHERE main_column=value
Exactly this sequence is safe. Things can go nuts in case if you have
index on other_column and you do something like this:
for value in SELECT main_column IN mytable WHERE
1. When is it acceptable for sqlite to leave a corrupt database that
can't be used?
It's never acceptable. SQLite specifically written and tested to
manager out of disk space errors appropriately without database
corruption.
I've got the data moved off to the side after it
whom to trust?
Trust Kees. Borgan's thought about keeping the lock and transaction
management inside sqlite3_exec is incorrect.
as for Kees Nuyt reply, did you toke int account that select
last_insert_rowid()
and insert query combined in single query and executed via single call
of
Is it correct behavior of sqlite that COMMIT will not proceed unless
no other transactions are present in the system?
No, SQLite never behaves like that. Probably you executed in the
second thread some SELECT query (besides INSERT) and it wasn't
finished yet by the time of COMMIT. In this
However, I am surprised that it does not at least possess a
list of all open handles to a given database. If I had that, then I could
close all DB connections either before the delete or after. Are you sure
that such a list does not exist?
If SQLite was able to obtain such list (not in the
int ret = sqlite3_exec(m_ppDb, query.c_str(), hwLMsqlite3TableCallback, rs,
zErr);
I get SQLITE_BUSY and hwLMsqlite3BusyHandler is not getting called.
What query do you use?
Pavel
On Fri, Nov 12, 2010 at 4:51 PM, Prakash Reddy Bande
praka...@altair.com wrote:
Hi,
I have set a busy
We're planning to upgrade SQLite to the latest version (atleast to v3.5.0)
The latest version is 3.7.3.
Can somebody point me to the RPM download link location of the same?
SQLite doesn't have RPM. You can download SQLite's sources or prebuild
library from here:
That's I don't know SQLite have stored procedure support?
No. There's only limited support of triggers, i.e. triggers don't have
some full-featured programming language, they are just a set of
selects, updates, deletes or inserts
Pavel
On Tue, Nov 9, 2010 at 2:29 AM, Tran Van Hoc
Yes. That's precisely the intended use case. Remember though that the
transaction is not really committed until COMMIT statement runs: if your
application crashes or machine loses power, all changes to the beginning of
the transaction are rolled back, not just those since last committed
This works:
sqlite select a,case when a='test' then 'true' else 'false' end from (sele
ct 'test' as a) as errval;
I guess OP meant it like this:
select a,case when a='test' then 'true' else 'false' end as errval
from (select 'test' as a);
And to answer the question:
Is this the expected
order of 10 to 100 of these tables. When doing operations on these tables, I
want to avoid having to do a prepare_query every time for performance
reasons.
Did you measure your performance and find that prepare_query is a bottleneck?
Since the tables have exactly the same schema, in theory I
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