why the compiler would think this code
will never be executed, so I thought I'd bring it up with you guys.
Unless you have defined SQLITE_ENABLE_STAT4 (or STAT3), TERM_VNULL is
defined as 0:
http://www.sqlite.org/src/artifact/d3633e9b59210324?ln=273-277
Dan
://www.sqlite.org/src/artifact/69b2085076654
The code is quite easy to follow too.
Dan.
Simon.
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not hold the database mutex between non-nested API calls.
Dan.
In multithread mode, you are taking over this responsibility; if you take care,
you may nest several selects from different threads into a single transaction,
but need to be aware of the fact that they will all commit
mode?
Dan.
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for the remaining rows that need to be ordered.
btw this is in no way a feature request - if it's not possible I'm
just going to update the manual to say that throwing exceptions in the
collator callback will give undefined behavior.
cheers
Dan
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The fix should be in 3.8.9.
Dan.
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On 01/30/2015 10:49 PM, Dominique Devienne wrote:
On Fri, Jan 30, 2015 at 4:38 PM, Dan Kennedy danielk1...@gmail.com wrote:
On 01/29/2015 02:29 AM, farkas andras wrote:
[...] but searches based on ROWID are atrociously slow and hog massive
amounts of memory [...]
Looks like range
for reporting this. The issue with (1) and (2) is now fixed here:
http://www.sqlite.org/src/info/adc9283dd9b
I think it is a bug in the input data causing the problem in (4). The
values inserted into test and testdata are just slightly different.
Dan
with the same connection?
Dan.
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so that we can see it.
The first call to sqlite3_prepare_v2() needed to load the database
schema into memory. It does this by executing a regular SELECT ...
statement on the sqlite_master table, which involves calling
sqlite3VdbeExec(). Via sqlite3_exec(), as it happens.
Dan
the
new rows into it. Then running:
INSERT INTO target_tbl SELECT * FROM temp_tbl;
In this case, SQLite detects the similar schemas and copies keys in
sorted order from the indexes on temp_tbl to the corresponding index
on target_tbl.
Dan.
Note:
The tests were programmed in c# code
an implicit
transaction).
https://www.sqlite.org/c3ref/get_autocommit.html
https://www.sqlite.org/c3ref/next_stmt.html
https://www.sqlite.org/c3ref/stmt_busy.html
Dan.
However, I can add a few observations
I made:
WAL file size was about 70 MB (as reported by the OS) until the critical
invalid syntax I
believe.
Initially reported at: https://bugs.php.net/bug.php?id=68771 Apologies
in advance if this is a spurious report.
cheers
Dan
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around with the code you could probably get them to work
without too much trouble.
Dan.
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On 01/05/2015 06:22 PM, Simon Slavin wrote:
I have a database file which is 120GB in size. It consists of two huge tables
and an index.
Its journal_mode is DELETE.
It is on a partition with 803GB of free space. By my calculations I have 6.7
times the amount of free space as the database is
is accessed.
Dan.
Peter
On 1/2/2015 3:00 PM, Peter Aronson wrote:
If only the xDisconnect method is called on a virtual table create in
the temp database at disconnect time, is that the only time
xDisconnect will be called? The documentation at sqlite.org doesn't
seem to say. Jay
HAVING d=2;
2
Showing that given a choice, MySQL picks an original column over an
alias within the HAVING clause as well.
So, I guess, not a bug...
Dan.
-Ursprüngliche Nachricht-
Von: James K. Lowden [mailto:jklow...@schemamania.org]
Gesendet: Samstag, 03. Jänner 2015 00
On 01/05/2015 02:52 PM, Dan Kennedy wrote:
On 01/05/2015 01:39 PM, Hick Gunter wrote:
This is completely legal and well defined.
HAVING is applied to the RESULT set of a SELECT.
The select asks to count the distinct kontrola in each group of
kvadrat and datum, the HAVING clause specifies
parameters to be
passed to one of these system calls.
Running under [strace] or equivalent might help to figure out why the
system call is failing.
Dan.
Thanks and Regards
Aswin Waiba
===
Please access
On 01/02/2015 01:58 PM, Hick Gunter wrote:
Temporary virtual tables sounds like an interesting concept. Does the
xDestroy() function get called on such a beast (as opposed to xDisconnect()
when the connection is closed)?
Just xDisconnect().
Dan.
Should that function delete the backing
-journal, then close it and proceed to open the db in wal mode. Once
the db has been opened in wal mode, the cold journal file will be
ignored completely.
So the net effect will be a slight overhead when a connection opens its
first read transaction on the db.
Dan.
2014-12-29 9:40 GMT
.
What am I missing?
Creating an FTS4 table that uses the content= option does not
automatically populate the FTS index. It just creates an empty FTS index
that SQLite assumes the user will somehow take care of populating.
Dan.
Thanks,
Peter
On Dec 24, 2014, at 12:03 PM, Peter Truskier
On 12/18/2014 02:41 PM, Paul wrote:
I want to confirm that issue is fixed for me.
Thanks again, Dan!
Please ignore this update, patch fixes this problem as well.
I want to add even more input for this issue.
I understand why there is implicit savepoint, when I remove row from 'parent'
table
On 12/18/2014 04:16 PM, Paul wrote:
Hi, Dan.
On 12/18/2014 02:41 PM, Paul wrote:
I want to confirm that issue is fixed for me.
Thanks again, Dan!
Please ignore this update, patch fixes this problem as well.
I want to add even more input for this issue.
I understand why there is implicit
. Logging
this information along with the checkpoint attempts and return codes
might help to shed light on the problem.
Dan.
sqlite3_wal_checkpoint_v2() returns SQLITE_OK, and pnLog and Ckpt as
equal(around 4000), indicating complete wal file has been synced with main
db file. So next
is to prevent stack overflow. I guess to get
the old behavior, set it to a very large value.
Are you able to post the FTS query that caused a problem with the
default settings? Just the MATCH expression will be enough, we don't
need the table schema or contents.
Dan
on the fossil trunk that should fix the problem
with ON DELETE CASCADE:
http://www.sqlite.org/src/info/8c5dd6cc259e0cdaaddaa52ccfa96fee6b166906
Dan.
Best regards,
Paul
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thing.
Dan.
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modified per
delete, so closer to 400MiB of memory. Without the sub-transaction, the
implicit sub-transaction created by each DELETE becomes the outermost
and so the statement journal doesn't grow much at all. So not much
memory used in that case.
Dan.
test.c
#include stdio.h
On 12/15/2014 11:59 PM, Dan Kennedy wrote:
On 12/15/2014 11:11 PM, Paul wrote:
Hello, dear developers
Recently I've stumbled upon a very rare and strange bug.
The result of this is abnormal memory usage, that does not allow us
to remove
fair number of rows from a table due to the limit
On 12/12/2014 03:31 AM, Nick wrote:
On 11 Dec 2014, at 10:08, Dan Kennedy wrote:
On 12/11/2014 05:49 AM, Nick wrote:
On 10 Dec 2014, at 07:35, Dan Kennedy wrote:
Strictly speaking the database file may not be well-formed even if there is no
ongoing checkpoint. If:
a) process A opens
On 12/11/2014 05:49 AM, Nick wrote:
On 10 Dec 2014, at 07:35, Dan Kennedy wrote:
Strictly speaking the database file may not be well-formed even if there is no
ongoing checkpoint. If:
a) process A opens a read transaction,
b) process B opens and commits a write transaction
. So
it effectively copis only a subset of the modifications made by earlier
transactions into the db file - not necessarily creating a valid db file.
Dan.
A) Ensure all processes besides the backup process have the database closed
while it is being copied. Establish some kind
On 12/08/2014 09:55 PM, Nico Williams wrote:
Ideally there would be something like DEFERRED foreign key checking
for uniqueness constraints...
You could hack SQLite to do enforce unique constraints the same way as
FKs. When adding an entry to a UNIQUE index b-tree, you check for a
duplicate.
read overflow so the only consequence is just an
occasional Segmentation fault when allocated
piece of string is at the specific place: near the end of the page in front of
unmapped page.
Should I fill a bug report?
It's certainly very suspicious. Which SQLite version are you using?
Dan
- there is no
chance of an overwrite or database corruption. Easiest workaround is to
append () to your CREATE VIRTUAL TABLE statement. i.e.
CREATE VIRTUAL TABLE temp.vtb_enyqkyxs USING vtable_module_343()
Dan.
Thanks.
On 11/27/2014 03:20 PM, Paul wrote:
Here is how it looks with debug symbols
(2147487744=2^31+4Ki, extra 4Ki from glibc), I guess, but int is not
capable to hold more than 2Gi.
Is this a known problem?
It is now.
Do you have a large cache-size configured?
Thanks,
Dan.
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On 11/26/2014 12:41 AM, Marcin Sobieszczanski wrote:
Do you have a large cache-size configured?
Yes:
PRAGMA cache_size = 10
PRAGMA page_size = 16384
Thanks for reporting this. I think it should be fixed here:
http://www.sqlite.org/src/info/623827192532f08b
Dan
overruns for all regular malloc/free allocations. If
lookaside is omitted these fencepost checks will be done for small
allocations as well, which may reveal the source of the memory corruption.
An assert() will fail if any of the fencepost checks indicate a buffer
overwrite.
Dan
On 11/14/2014 03:37 PM, Noel Frankinet wrote:
Impressive !
It is that. Perhaps not as functional as a native app (so far), but
looking really good! And you can't beat the deployment.
Dan.
On 12 November 2014 12:08, Kirill kir...@aidagw.com wrote:
Good day,
Full line manager to work
. It should probably be documented though.
Dan.
RP
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in debug) and
return NULL if any statements are busy?
I think we likely should. In both debug and non-debug builds.
Thanks for reporting this.
Dan.
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improved since then. It's not quite as detailed as your proposal, but it
is much better than it was.
Dan.
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think that number is only supposed to change if the new
release is not ABI compatible with the previous. It's a coincidence that
8.6 matches the tail of the previous release number. Earlier releases
also used libsqlite3.so.0.8.6.
Dan.
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here:
http://www.sqlite.org/vfs.html
Dan.
--
View this message in context:
http://sqlite.1065341.n5.nabble.com/Bug-993556-SQLite-crash-in-walIndexTryHdr-due-to-Windows-EXCEPTION-IN-PAGE-ERROR-exception-tp78695.html
Sent from the SQLite mailing list archive at Nabble.com
?
I don't think so. See the final paragraph here:
http://sqlite.org/c3ref/c_vtab_constraint_support.html
Looks like you have to implement the OR REPLACE support in the xUpdate
method.
Dan.
Thanks,
-dave
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On 10/15/2014 07:19 AM, Sam Carleton wrote:
When I use the SQLite Manager, I am able to run this query just fine:
UPDATE EventNode
SET IsActive = 1
WHERE EventNodeId IN (SELECT w.EventNodeId
FROM EventNode as w, EventNode as m on
m.objectId =
could temporarily add a SELECT statement before the INSERT to check
if a record with the specified versionName is already present in the
table.
Dan.
There are multiple insert statements and multiple tables. The insert
statements look like below.
params = versionName, versionNumber, updateFrom
and they turn out to be simpler than
they look.
Regards,
Dan.
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On 10/09/2014 07:23 PM, Sohail Somani wrote:
On 2014-10-09, 7:32 AM, Dan Kennedy wrote:
Got it, thanks for the explanation. Just to make sure that I
understand you correctly, is the clause MATCH '*l0l* *h4x*' getting
translated to MATCH 'l0l* h4x*'?
Yes, that's right.
Dan.
In that case
'101* h4x*'.
This should only affect FTS tables that use custom tokenizers (not the
default simple or porter tokenizers).
Dan.
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UNION ALL
SELECT id FROM t2 WHERE id=10
ORDER BY data
is not a valid statement in SQLite.
Dan.
Thanks,
Yuanzhong
On Fri, Sep 19, 2014 at 8:16 PM, Yuanzhong Xu y...@utexas.edu wrote:
Hi,
In SQLite 3.8.6, suppose I have two tables in the same format:
CREATE TABLE t1 (id INTEGER PRIMARY
On 09/19/2014 02:53 PM, Paul wrote:
Paul wrote:
My goal is to make structure initialization of an *abstract* database atomic.
[...] if database file is missing it must be created and initialized.
http://www.sqlite.org/transactional.html
Just do the check for the database structure and the
to this is if you use the incremental-blob API:
http://www.sqlite.org/c3ref/blob_open.html
Dan.
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On 09/15/2014 06:19 PM, Dominique Devienne wrote:
On Mon, Sep 15, 2014 at 12:29 PM, Dan Kennedy danielk1...@gmail.com wrote:
On 09/15/2014 03:18 PM, Dominique Devienne wrote:
On Fri, Sep 12, 2014 at 11:48 PM, Eric Rubin-Smith eas@gmail.com
wrote:
Looking at the sqlite web site
of problems with
FTS4 that could be fixed in FTS5, don't keep them to yourself!
Dan.
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On 07/27/2014 09:30 PM, Alan Hourihane wrote:
Hi all,
I logged this bug via Gentoo, but it should be done here...
https://bugs.gentoo.org/show_bug.cgi?id=517110
Is this still present on the trunk? It may have been fixed here:
http://www.sqlite.org/src/info/612b6d1b1f
Dan
to sqlite3_bind_text(), bind_result() or similar?
Dan.
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On 07/16/2014 03:22 AM, Dan Kennedy wrote:
On 07/15/2014 09:06 PM, Mathieu Clabaut wrote:
Hello,
Digikam bug https://bugs.kde.org/show_bug.cgi?id=323888#c89 seems
to be
caused by a sqlite memory leak
It looks very much like the program is not calling sqlite3_close().
If you have a small
On 07/13/2014 12:29 AM, Staffan Tylen wrote:
The following statement is flagged as invalid, so what's the correct way of
coding it?
WITH A AS (SELECT 'A'),
B AS (SELECT 'B')
SELECT *
FROM A
UNION
SELECT *
FROM B
;
This statement should work in SQLite 3.8.3 or
/67bfd59d9087a987
http://www.sqlite.org/src/info/31a19d11b97088296a
The fix appeared in 3.8.4. If you upgrade, the statement will work.
You'll note that I said the statement should work in 3.8.3. Not that
it does. :)
Dan.
On Sat, Jul 12, 2014 at 8:06 PM, Dan Kennedy danielk1...@gmail.com
way or the other. I'd like to take advantage of this, but not if it is
undefined behaviour that just happens to work.
I don't see why that would be undefined behaviour. Adding WHERE 0 to
the SELECT would also work.
Dan.
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() or sqlite3_step() depends on the pragma and on the
specific release of SQLite.
Do either of them explain what you are seeing?
https://www.sqlite.org/pragma.html
Dan.
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://www.sqlite.org/draft/fts3.html
FTS4 has been updated to match the documentation. So that unicode61 is
now enabled by default or disabled by SQLITE_DISABLE_FTS3_UNICODE. As of
3.8.6, SQLITE_ENABLE_FTS4_UNICODE61 will no longer exist.
http://www.sqlite.org/src/info/0cc0230ae9cf
Regards,
Dan
On 06/25/2014 04:44 PM, João Ramos wrote:
The sample column has some sensitive data that I can't share, so I'll have
to change it and then try to reproduce the problem (I removed it before
because I assumed that it wouldn't be important).
On Mon, Jun 23, 2014 at 3:26 PM, Dan Kennedy danielk1
On 07/07/2014 03:12 AM, Nissl Reinhard wrote:
Hi,
while preparing this statement
create table gpBestellvorschlagInfo as
select GanttPlanID
, BestellterminRaw
, case when not (
select max(HinweisCodiert)
from Bestellvorschläge
where ArtikelOID = o.ArtikelOID
and
this, and both work with SQLite connections in
serialized mode. SQLite is re-entrant.
Dan.
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to
serialised mode.
Looks like a corrupted heap. If you run your app under valgrind it will
probably point you to the problem.
Dan.
Here is the backtrace:
#0 0x7f4f78f0d08d in nanosleep () from /lib/x86_64-linux-gnu/libc.so.6
#1 0x7f4f78f0cf2c in sleep () from /lib/x86_64-linux
on Linux, set the TMPDIR
(or SQLITE_TMPDIR) environment variable.
Dan.
Any advice?
Rinat Hadashi
-
Intel Israel (74) Limited
This e-mail and any attachments may contain confidential material for
the sole use
because it contains embedded 0x00 bytes. And without the
sqlite_stat4 data, it seems that SQLite picks the good query plan in
either case.
Can you dump the sqlite_stat1 and sqlite_stat4 tables using the shell
.dump command instead?
Thanks,
Dan.
sqlite_stat4 (before - good planning
On 06/19/2014 11:57 PM, Mohit Sindhwani wrote:
Hi Wolfgang,
On 19/6/2014 11:54 PM, Wolfgang Enzinger wrote:
Not sure why you think you have to store those point coordinates twice.
This works:
sqlite CREATE VIRTUAL TABLE abc USING rtree(id,x,y);
sqlite INSERT INTO abc VALUES(1,20,30);
sqlite
The other
columns are pairs, one pair per dimension, containing the minimum and
maximum values for that dimension, respectively.
Alysson Gonçalves de Azevedo
Anarcho-syndicalism is a way of preserving freedom. - Monty Python
2014-06-19 14:06 GMT-03:00 Dan Kennedy danielk1...@gmail.com
FTS has a list of matches within the current row for
each phrase in the query. Each match is stored as a column and token
offset - the number of tokens that precede the match within the column text.
Is that what you need? Do you have any ideas for an fts4 interface it?
Dan.
I implemented
is NOT a valid sqlite comment line, and hence
an incomplete sqlite statement
#.headers on
sqlite3 -init my_init.sql my_db.sq3
Cannot reproduce here. Any special options when you built SQLite?
Do you have valgrind installed? If so, can you run this under it and
post the output? Thanks.
Dan
file. So I'd say if the
comment appears inside the parenthesis it will probably be preserved.
Of course, even if that is correct, it's just an artifact of the
implementation, not part of a published interface that one would expect
not to change in future versions.
Dan
for each vtab.*=? condition) and merges the
results before returning them to the caller.
Dan.
Any
experiences with this issue? Or any suggestions for other query processing
engines I might use?
Thanks,
Andris
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queries. But I suspect it's very
easy to find cases where the prepare() is at least as heavy as the step().
Dan.
In theory very complex queries would be the exception, except that query
planners long ago developed heuristic shortcuts. Mathematically, an
N-way join is a combanatorial
script is somehow created automatically.
If it's easy enough to add the missing close commands (assuming they
really are missing), I'd like to see if it still leaks.
Thanks,
Dan.
$ cat smaller.trace | valgrind --leak-check=yes ~/a.out lsm
==24046== Memcheck, a memory error detector
==24046
/8a39847dafa3047ba5d6107f0032c6b39d0ef104
Dan.
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problem. And the above is just guesswork... It would
be good to verify experimentally that the index really does grow
indefinitely
with this kind of input before trying to fix anything.
Dan.
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On 05/02/2014 04:13 PM, Andrew Moss wrote:
On 2 May 2014 07:57, Dan Kennedy danielk1...@gmail.com wrote:
On 05/01/2014 03:30 PM, andrewmo wrote:
We are using the FTS3 extension to sqlite to store large numbers of short
(~300 byte) documents. This is working very well and providing us
On 05/02/2014 07:30 PM, Stadin, Benjamin wrote:
Is the delete marker also set on old keys on UPDATE? Or just DELETE -
INSERT?
Internally, FTS implements an UPDATE as a DELETE followed by an INSERT.
Dan.
I ran into the ever-growing FTS index issue last year. I’m creating DB
diffs which
to return LSM_FULL for any transaction too
large to handle. But the real fix should be to change things so that LSM
can begin flushing data to the database file mid-transaction.
Dan.
On Monday, April 28, 2014 01:41:02 PM sql...@charles.derkarl.org wrote:
Hi,
I'm not exactly sure
* FROM b;
a b
-- --
1 2
1
sqlite
Thanks for reporting this. Now fixed on the trunk. Ticket is here:
http://www.sqlite.org/src/info/f67b41381acce9a881fb081c4a20ecbeb2429b0d
Dan.
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You could try:
CREATE TRIGGER audit_test_a_audit_update
AFTER UPDATE OF (all-columns-except-last_changed) ON ...
Dan.
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On 04/02/2014 06:08 PM, Engin Guelen wrote:
Hello,
i noticed that Instead of Update Triggers on Views do not fire as soon as the Views get a bit more involved.
The Following View and Trigger Code compiles w/o Errors.
But when changing the SYNC column nothing happens to REF_TAB, that
and bite you
to me.
Dan.
On Fri, 2014-03-21 at 09:35 -0500, Ben Peng wrote:
Dear sqlite experts,
disclaimerI'm far from an sqlite expert, others should be able to
provide a more authoritive answer/disclaimer
I think what you want is rather to simply define your own custom
function to implement
?
There's a good chance it will be, yes.
Dan.
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the same way it overrides the
built-in upper() and lower() functions. If we were to add case-folding
to ICU collations, we would have to use a different name.
It does look like nunicode would solve the OP's problem nicely though.
Dan.
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continue to use it.
Dan.
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COLLATE NOCASE);
As noted in the documentation, this is not Unicode-aware, which is why I
turned to the ICU extension. What should be the equivalent usage where
sqlite does case folding using ICU?
I don't think there is a way to do that with the current SQLite ICU
extension.
Dan
in the database, SQLite requires
roughly 2N bytes of free space wherever temp files are created on your
system to work with. It uses this space as temporary storage to sort the
index entries.
Dan.
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On 03/11/2014 04:17 AM, St. B. wrote:
Hi,
On Mon, Mar 10, 2014 at 6:37 PM, Dan Kennedy danielk1...@gmail.com wrote:
On 03/10/2014 06:49 PM, St. B. wrote:
Hi,
I posted this question last year, but did not get any feed back. Is this
something that can be handled on the ML, or should I ask
;,
if there will only ever be a single connection to the database.
Or you could build with SQLITE_DISABLE_DIRSYNC, which omits all
syncs on directories. Of course, that will slightly increase the
chances of a power failure causing database corruption.
Dan
point.
During run time I find that the following exception occurs.
vtable constructor failed: MapLevel_Idx3
How is virtual table MapLevel_Idx3 created? Is it an rtree table?
SQLite version?
Dan.
Occurence ratio is about 1 in 1 queries on the range index. Am I doing
something wrong
On 03/08/2014 08:53 PM, Kees Nuyt wrote:
Someone called zzo38 posted a quine (self-replicating program)
on Internet Relay Chat in network: Freenode, channel: #sqlite
[2014-03-08 11:01:59] zzo38 I made a quine program in SQL.
[2014-03-08 11:02:10] zzo38
with q(q) as
(select 'with q(q) as
On 03/09/2014 01:25 AM, Zsbán Ambrus wrote:
In the sqlite3 console, the following very simple statement gives
Error: out of memory:
SELECT char();
I think this is a bug.
It is. Thanks for the report. Now fixed here:
http://www.sqlite.org/src/info/ba39df9d4f
Dan.
This query should
.
Trying simple SELECT r.name FROM resource AS r WHERE r.name = ? gets Out of
memory too calling preparev2.
Does the out of memory error come from sqlite3_prepare_v2()
directly or from sqlite3_errmsg()? Is the sqlite3* pointer
a NULL?
Dan
either of these without creating either an incompatible
file-format or a broken build, it's probably Ok. Does look a bit odd though.
Dan.
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SetEndOfFile() to extend the size of the *-shm file to
32KB (from 0KB). I have no idea why it is failing.
What version of SQLite is this? Newer versions provide more
detail for debugging, particularly if you also turn on
sqlite3_log() logging:
http://sqlite.org/c3ref/log.html
Dan.
OPEN 40 D:\blp
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