hi all,
once the database file is opened is some other function how to check the
db file is opened or not opened?
is there any function like "isopen()" in sqlite???
thanks
kris
--
View this message in context:
> I have the commanline sqlite3.exe in the same folder as the .db and need to
> now manipulate the db to manually remove a corrupt record.
> I tried: .tables to show trables but nothing happens
Don't forget to run sqlite3.exec followed by the name of your database
file. Otherwise you will be
"Dave Dyer" <[EMAIL PROTECTED]>
wrote in message news:[EMAIL PROTECTED]
> Is it ever possible for subsequent calls to sqlite_step
> to return either a different number of column values or
> a different set of columns?
No. The set of columns is fixed at the time you call
sqlite3_prepare[_v2].
>
Thanks I'll try the fossil database tomorrow morning.
I just tried creating a new test application using Visual Studios built
in C++ wizards (not our proprietary system) using Dennis's test
application source code with a copy of the 3.6.1 amalgamation and my
test database. I'm still seeing a
Is it ever possible for subsequent calls to sqlite_step
to return either a different number of column values or
a different set of columns?
In other words, if I'm doing something based on the column
names, can I check only the first step, and assume the
rest are the same?
Hi Igor,
I used SQLite versio n 3.5.9.
I read the SQLite online document and the suggession that we need to finalize
all the prepare statement associated with database connection before closing
the connection as below
while( (pStmt = sqlite3_next_stmt(pDb, 0))!=0 ){
On Aug 21, 2008, at 7:33 PM, Brown, Daniel wrote:
> if anyone has a fairly meaty test
> database they don't mind sharing that I could fling at my test
> application...
A project repository with "fossil" is a (meaty) SQLite database. You
could (for example) go clone one of the various fossil
1. Is anyone else on the list using Visual Studio 2005? It would be
handy to see if they got similar results with the test application or
not, that would rule out the build environment to an extent.
2. And the other thing to try would be if anyone has a fairly meaty test
database they don't
Ok so after reading your feedback I tried:
1. "PRAGMA cache_size =10" no change in memory usage.
2. "PRAGMA page_size = 4096" no change in memory usage.
I'm doing both those queries (in C++) after the 'sqlite3_open(
":memory:", _pDataBase );' in my test but before the database file is
attached or
Nicolas Williams wrote:
>
> I thought the DB was 9MB; forgive me for wasting your time then. If
> it's 17.4MB then the memory usage seems a lot more reasonable.
Daniel, the OP's, database is 9 MB. I don't have his database file, but
I do have his test code. I used a database of my own that is
Hi,
Try
DELETE FROM ticket WHERE ticket.FIELDNAME =102
Regards
Denis
On 08/22/2008 09:02 AM, jojobo wrote:
> hello.
> I am not a coder so I aplogise for my naivety. I am using TRAC with a sqlite
> db called trac.db
>
> I have the commanline sqlite3.exe in the same folder as the .db and need
hello.
I am not a coder so I aplogise for my naivety. I am using TRAC with a sqlite
db called trac.db
I have the commanline sqlite3.exe in the same folder as the .db and need to
now manipulate the db to manually remove a corrupt record.
Once opened sqlite2 shows:
sqlite>
I need to know the
Shawn Wilsher <[EMAIL PROTECTED]> wrote:
> I'm looking to clarify the behavior of transactions when it comes to
> threads. When using the same sqlite3 object, and you begin a
> transaction on one thread, does it also group work that is being done
> on another thread until you end the transaction?
Hey all,
I'm looking to clarify the behavior of transactions when it comes to
threads. When using the same sqlite3 object, and you begin a transaction on
one thread, does it also group work that is being done on another thread
until you end the transaction? Or is it the case that each thread
On Thu, Aug 21, 2008 at 04:02:32PM -0600, Dennis Cote wrote:
> I built a copy of my test database using a 4096 byte page size and it
> reduced the database file size from 17.5 MB to 12.2 MB. When I repeat
> the tests using this database file I get the same 18102 KB of memory
> used, but a
Nicolas Williams wrote:
>
> I wonder too, what does the page cache do when doing full table scans?
> If the cache has an LRU/LFU page eviction algorithm then full table
> scans should not be a big deal. Ideally it should not allow pages read
> during a full table scan to push out other pages,
Hi Ron,
I've encountered that as well.
You're using the sqlite3 commandline interface program, I'm sure.
I think it was intended as a test and demo utility, but it's found its
way into a number of released products.
I'm not aware of a way to make this work with the current utility.
Since the
Got it!
Thanks a lot for your answer.
JP.
- Original Message
From: Igor Tandetnik <[EMAIL PROTECTED]>
To: sqlite-users@sqlite.org
Sent: Thursday, August 21, 2008 1:52:15 PM
Subject: Re: [sqlite] sqlite3_close
Joanne Pham <[EMAIL PROTECTED]> wrote:
> Is it necessary to call only
Jeffrey Becker wrote:
> Just out of curiosity what happens if you call
> "PRAGMA page_size=4096"
> before running the import?
>
As I expected, it has no effect. The page size pragma only effects the
:memory: database he is copying into. The page size of the database file
was set when it was
Joanne Pham <[EMAIL PROTECTED]> wrote:
> Is it necessary to call only sqlite3_close(pDb) before open another
> connection. Thanks,
No (though it's not clear why you would want multiple connections open
at the same time). You can open several connections and close them in
any order.
But in your
Is it necessary to call only sqlite3_close(pDb) before open another connection.
Thanks,
JP
- Original Message
From: Igor Tandetnik <[EMAIL PROTECTED]>
To: sqlite-users@sqlite.org
Sent: Thursday, August 21, 2008 12:03:58 PM
Subject: Re: [sqlite] sqlite3_close
Joanne Pham <[EMAIL
Here is an easy way to reproduce the symptom. Given the following file
as input for the .import command:
---csvtest.csv---
"1","wilson, ron"
"2","momma, your"
-
Here is the sqlite output:
SQLite version 3.5.9
Enter ".help" for instructions
sqlite> create table names (id
Great answer, thank you very much.
doug
Thursday, August 21, 2008, 3:42:12 PM, you wrote:
ML> Doug Porter wrote:
>> Is there a way to get a list of connections that are opened on a
>> particular SQLite database file?
>>
>> Our software uses SQLite to save our data and we want to warn a user
>>
Doug Porter wrote:
Is there a way to get a list of connections that are opened on a
particular SQLite database file?
Our software uses SQLite to save our data and we want to warn a user
who opens a file that is already opened by another user. I tried a
homebrewed approach (keep a table of open
Hello!
В сообщении от Thursday 21 August 2008 22:45:33 Doug Porter написал(а):
> Our software uses SQLite to save our data and we want to warn a user
> who opens a file that is already opened by another user. I tried a
> homebrewed approach (keep a table of open connections manually), but
> ran
Mihai Limbasan wrote:
Hello there.
I've re-read your mail a few times, however you seem to have forgotten
to actually *ask the question.*
On a sidenote, though: You're storing the database connection in a
local variable (sqlSt) instead of returning it - so when you return
from the
Hello there.
I've re-read your mail a few times, however you seem to have forgotten
to actually *ask the question.*
On a sidenote, though: You're storing the database connection in a local
variable (sqlSt) instead of returning it - so when you return from the
function, you've opened a
Joanne Pham <[EMAIL PROTECTED]> wrote:
> I have a question related toSQLite db handle(pDb in my codes).
> I have the function below to open the database connection. I have to
> call sqlite3_close(sqlite3 *)(sqlite3_close(pDb) in my case)
> before open another database connection( by calling
Sorry! Resend an email because no subject in previous email.
Again. Your help is greatly appreciated.
Thanks,
JP
- Original Message
From: Joanne Pham <[EMAIL PROTECTED]>
To: General Discussion of SQLite Database
Sent: Thursday, August 21, 2008 11:54:13 AM
Hi All,
I have a question related toSQLite db handle(pDb in my codes).
I have the function below to open the database connection. I have to call
sqlite3_close(sqlite3 *)(sqlite3_close(pDb) in my case)
before open another database connection( by calling openDb) for releasing the
memory which is
Is there a way to get a list of connections that are opened on a
particular SQLite database file?
Our software uses SQLite to save our data and we want to warn a user
who opens a file that is already opened by another user. I tried a
homebrewed approach (keep a table of open connections
On Thu, Aug 21, 2008 at 10:32:23AM -0400, Jeffrey Becker wrote:
> Just out of curiosity what happens if you call
> "PRAGMA page_size=4096"
> before running the import?
I wonder too, what does the page cache do when doing full table scans?
If the cache has an LRU/LFU page eviction algorithm then
Hello.
Has anyone used sqlite in a freestanding embedded environment? If anyone
had success with it, how about the footprint? And storage medium, direct
flash access?
Thanks,
Ricardo
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On the miniscule chance anyone's itching to see Informix ver 9
behaviour, here are the results:
IBM Informix Dynamic Server Version 9.40.TC7
CREATE temp TABLE t1(a INTEGER, b INTEGER);
INSERT INTO t1 VALUES(1,2);
INSERT INTO t1 VALUES(9,8);
SELECT a AS b, b AS a FROM t1
I'm trying to update records in one table based on joined data in another
table. MSSQL has support for a "FROM" clause within an UPDATE statement
which makes this type of thing very easy. Is there any equivalent in
SQLite? The only way I've found to achive the same results is to use a
subselect
Brown, Daniel wrote:
>
> I just tried with rebuilt data from SQLite Analyzer in SQLite 3.6.1, I'm
> still seeing a memory usage that is roughly three times the size of the
> source database file, looking at your changes to my test there doesn't
> seem to be any fixes that would resolve that.
>
hi, I am using a GdkPixbuf and want to store the pixbuf created to
the sqlite3 database . can you tell me how to store a pixbuf in
sqlite3 database. Thanks in advance.Regards,Jitender
Singh
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MySQL:
mysql> SELECT a AS b, b AS a FROM t1 ORDER BY a;
+--+--+
| b| a|
+--+--+
|1 |2 |
|9 |8 |
+--+--+
2 rows in set (0.00 sec)
mysql> SELECT b AS a, a AS b FROM t1 ORDER BY a;
+--+--+
| a| b|
+--+--+
|2 |
On 8/21/08, alp <[EMAIL PROTECTED]> wrote:
>
> Hello,
>
> I have to tables(TBL_OBJECTS, TBL_TAGS) and I want to use the ROWID of the
> last inserted row from table TBL_OBJECTS to insert a new row in TBL_TAGS
> table with the ID_OBJECT foreign key set to the ROWID value from the
> precedent
Igor Tandetnik wrote:
>
> "alp" <[EMAIL PROTECTED]> wrote in
> message news:[EMAIL PROTECTED]
>> I have to tables(TBL_OBJECTS, TBL_TAGS) and I want to use the ROWID
>> of the last inserted row from table TBL_OBJECTS to insert a new row
>> in TBL_TAGS table with the ID_OBJECT foreign key set to
"alp" <[EMAIL PROTECTED]> wrote in
message news:[EMAIL PROTECTED]
> I have to tables(TBL_OBJECTS, TBL_TAGS) and I want to use the ROWID
> of the last inserted row from table TBL_OBJECTS to insert a new row
> in TBL_TAGS table with the ID_OBJECT foreign key set to the ROWID
> value from the
Why two tables? Define a unique table and redefine your tables as views.
alp a écrit :
> Hello,
>
> I have to tables(TBL_OBJECTS, TBL_TAGS) and I want to use the ROWID of the
> last inserted row from table TBL_OBJECTS to insert a new row in TBL_TAGS
> table with the ID_OBJECT foreign key set to
"Alex Katebi" <[EMAIL PROTECTED]>
wrote in message
news:[EMAIL PROTECTED]
> For a in memory connection I get table lock error 6.
> I have one in memory connection with many prepared statements for
> different tables.
> Depending how the statements are interleaved I get a table lock error
> when
Hi,
For a in memory connection I get table lock error 6.
I have one in memory connection with many prepared statements for different
tables.
Depending how the statements are interleaved I get a table lock error when
dropping a table.
What is causing of this?
I did turn on tracing. I am
Hello,
I have to tables(TBL_OBJECTS, TBL_TAGS) and I want to use the ROWID of the
last inserted row from table TBL_OBJECTS to insert a new row in TBL_TAGS
table with the ID_OBJECT foreign key set to the ROWID value from the
precedent table.
This is the tables definition:
CREATE TABLE
Brown, Daniel wrote:
Perhaps, when is the next release due? I'd be interested to see the
differences, if an upgrade reduces memory overhead that significantly it
would be most excellent :)
3.6.2 is (tentatively) due this Monday :)
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