On Thu, Jun 2, 2016 at 2:42 PM, Clemens Ladisch wrote:
> Gelin Yan wrote:
> >> In Process A
> >>
> >> insert a value into a table XX and commit.
> >>
> >> In Process B
> >>
> >> select from the same table XX
> >>
> >>and I didn't find the inserted record.
> >
> >I used python &
Gelin Yan wrote:
>> In Process A
>>
>> insert a value into a table XX and commit.
>>
>> In Process B
>>
>> select from the same table XX
>>
>>and I didn't find the inserted record.
>
>I used python & its sqlite3 module for this trial, the autocommit mode
> is default on. After I e
lite-users-boun...@mailinglists.sqlite.org] Im Auftrag von Gelin Yan
> Gesendet: Mittwoch, 01. Juni 2016 17:16
> An: sqlite-users@mailinglists.sqlite.org
> Betreff: [sqlite] a question about data synchronization
>
> Hi All
>
> I have a question about data synchronization. T
On Thu, Jun 2, 2016 at 1:51 AM, Simon Slavin wrote:
>
> On 1 Jun 2016, at 4:15pm, Gelin Yan wrote:
>
> > In Process A
> >
> > insert a value into a table XX and commit.
> >
> > In Process B
> >
> > select from the same table XX
> >
> > and I didn't find the inserted record.
>
> Did you
On 1 Jun 2016, at 4:15pm, Gelin Yan wrote:
> In Process A
>
> insert a value into a table XX and commit.
>
> In Process B
>
> select from the same table XX
>
> and I didn't find the inserted record.
Did you do process A by explicitly declaring BEGIN or did you let SQLite make
its
n: sqlite-users@mailinglists.sqlite.org
Betreff: [sqlite] a question about data synchronization
Hi All
I have a question about data synchronization. The question is:
I have two process A & B. Both of them connect to the same database
In Process A
insert a value into a table XX and co
Hi All
I have a question about data synchronization. The question is:
I have two process A & B. Both of them connect to the same database
In Process A
insert a value into a table XX and commit.
In Process B
select from the same table XX
and I didn't find the inserted recor
-users at
mailinglists.sqlite.org>
??: [sqlite] A question
I have a question:
there are two tables:
CREATE TABLE poiTable ( poiId INTEGER NOT NULL, catId INTEGER NOT NULL,
mortonCode INTEGER NOT NULL, versionId INTEGER NOT NULL, iconSetId INTEGER ,
catIconSetId INTEGER , brandIconSetId INTEGER , regi
I have a question:
there are two tables:
CREATE TABLE poiTable ( poiId INTEGER NOT NULL, catId INTEGER NOT NULL,
mortonCode INTEGER NOT NULL, versionId INTEGER NOT NULL, iconSetId INTEGER ,
catIconSetId INTEGER , brandIconSetId INTEGER , regionId INTEGER , attrBitMask
INTEGER , attrDisplayBitMa
??? wrote:
> sql4:SELECT ... FROM ... WHERE b.tileId=557467343 AND ...
> Execute sql4 consumes 500-600ms, returned 5847 records
>
> sql5:SELECT ... FROM ... WHERE b.tileId=67430683 AND ...
> Execute sql5 consumes 500-600ms, returned 14 records
>
> the records returned of sql5 is less than sql4, but
I had written code that I thought should cache the repeated user function
arguments used in a SQL statement generally like so:
SELECT a.id FROM a,b WHERE MyFunc(a.data,b.data);
But to my surprise, even though I was saving my (parsed and processed)
arguments using at the end of my function impleme
On 2/9/16, Peter Aronson wrote:
> So, why *isn't* metadata preserved between function calls for data values?
Because the database value will likely change, rendering the metadata
obsolete. The metadata is only preserved when the value is a
constant.
That mechanism is intended for operators like
On 6/03/2013 1:59 AM, Jay A. Kreibich wrote:
> In this case, it is any trigger that invokes any other trigger.
> Prior to 3.6.18 there was no trigger "stack" and triggers could be
> only one layer deep.
Ah, thanks. That solves the problem. I can dynamically generate a single
inefficient trigg
On 03/05/2013 09:59 PM, Jay A. Kreibich wrote:
On Tue, Mar 05, 2013 at 11:20:27PM +1100, Philip Warner scratched on the wall:
On 5/03/2013 9:53 PM, Richard Hipp wrote:
Recursive triggers (triggers that invoke themselves either directly or
indirectly) were added in version 3.6.18, 2009-09-11.
On Tue, Mar 05, 2013 at 11:20:27PM +1100, Philip Warner scratched on the wall:
> On 5/03/2013 9:53 PM, Richard Hipp wrote:
> > Recursive triggers (triggers that invoke themselves either directly or
> > indirectly) were added in version 3.6.18, 2009-09-11.
>
> These are not strictly recursive; the
On 5/03/2013 9:53 PM, Richard Hipp wrote:
> Recursive triggers (triggers that invoke themselves either directly or
> indirectly) were added in version 3.6.18, 2009-09-11.
These are not strictly recursive; the 'when' clause means that trigger 1 will
cause trigger 2 to be called etc.
_
On Tue, Mar 5, 2013 at 1:11 AM, Philip Warner wrote:
>
> What I am seeing in 3.5.9 on Android is that the triggers are executed
> precisely once each, rather than once for each row.
>
Recursive triggers (triggers that invoke themselves either directly or
indirectly) were added in version 3.6.18,
This is a question about triggers in version 3.5.9...if anyone remembers it.
The reason I am asking is that I want to support
Android 2.1, which has 3.5.9 installed by default.
I have a set of triggers on a table:
tg1 before insert on sometable when new.f1 = 3
insert into sometable(f1, ...)
Григорий Григоренко wrote:
> Let's say app does the following (via the same connection):
> 1. BEGIN TRANSACTION;
> 2. prepare and step stmt A (SELECT * FROM foo WHERE rowid=1), A is not
> finalized or reset;
> 3. execute stmt B (DELETE FROM foo WHERE rowid=1), B is prepared, executed
> and final
Fri, 19 Oct 2012 13:16:31 -0700 от Pavel Ivanov :
>>> Var Alice := Db.SelectRecord('SELECT * FROM client WHERE client_name = ?',
>>> [ 'alice' ]);
>
>>
>
>> 1. If I drop record for "alice" from db and then access column data in
>> prepared stmt will it work OK?
>
>
>
> If the select statement
Fri, 19 Oct 2012 15:49:07 -0400 от "Igor Tandetnik" :
>Григорий Григоренко wrote:
>
> I am using prepared stmts to cache selected record for later use. I have a
> wrapper class, that has methods like AsString(name),
>
> AsFloat(name) etc to extract data for a column name.
>
>
>
> I prepare,
>> Var Alice := Db.SelectRecord('SELECT * FROM client WHERE client_name = ?', [
>> 'alice' ]);
>>
>> 1. If I drop record for "alice" from db and then access column data in
>> prepared stmt will it work OK?
>
> If the select statement wasn't reset or finalized, you won't be able to
> delete a re
Григорий Григоренко wrote:
> I am using prepared stmts to cache selected record for later use. I have a
> wrapper class, that has methods like AsString(name),
> AsFloat(name) etc to extract data for a column name.
>
> I prepare, bind and then do Sqlite3_step() to get record. Later I use
> sqli
Hello,
I am using prepared stmts to cache selected record for later use. I have a
wrapper class, that has methods like AsString(name), AsFloat(name) etc to
extract data for a column name.
I prepare, bind and then do Sqlite3_step() to get record. Later I use
sqlite3_column_XXX() to access data
On 30 Dec 2011, at 10:50pm, Black, Michael (IS) wrote:
> So can we get a link on the download page for this? Otherwise how are we
> supposed to find it?
Click the link right at the top that says 'file'.
Then click the 'd9be87f1c340285a' link.
Then copy-and-paste the code from that page.
Simon
On Nov 4, 2010, at 1:30 AM, Igor Tandetnik wrote:
> Pavel Ivanov wrote:
>>> 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 th
Pavel Ivanov wrote:
>> 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
> 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
jeff archer wrote:
> I am using SQLite from C++ and I have implemented a class to manager nested
> transactions using savepoints. I have currently implemented as a stack of
> transactions such that the first Begin uses BEGIN IMMEDIATE, while subsequent
> levels use SAVEPOINT T where is a
I am using SQLite from C++ and I have implemented a class to manager nested
transactions using savepoints. I have currently implemented as a stack of
transactions such that the first Begin uses BEGIN IMMEDIATE, while subsequent
levels use SAVEPOINT T where is a sequentially increasing
> This function returns the number of row changes caused by INSERT, UPDATE or
>> DELETE statements since the database connection was opened.
>>
>
> Either you're or this sentence on the site should be changed (in the final
> part)
Oops, missed the last part. But it seems not very useful for OP
bec
On Tue, Mar 2, 2010 at 6:36 PM, Pavel Ivanov wrote:
> OK, now I see the problem, but sqlite3_total_changes() will not help
> here too - it behaves the same way as sqlite3_changes(), it doesn't
> accumulate changes over several statements.
>
Hmm... are you sure about this?
A quote from the docs:
OK, now I see the problem, but sqlite3_total_changes() will not help
here too - it behaves the same way as sqlite3_changes(), it doesn't
accumulate changes over several statements. So without introducing
some difference between SELECT queries and any data-changing queries
in your program you won't
On Mon, Mar 1, 2010 at 6:31 PM, Pavel Ivanov wrote:
> sqlite3_changes() is exactly what you should use in this case. And I
> didn't understand why did you find it unsuitable for you?
>
> Pavel
>
I think I understand his confusion. Imagine if for some reason you don't
know whether last query is
sqlite3_changes() is exactly what you should use in this case. And I
didn't understand why did you find it unsuitable for you?
Pavel
On Mon, Mar 1, 2010 at 8:22 AM, yangchen wrote:
> HI,
>
> How could i get the rows affected by current sql statement ?
>
> "sqlite3_changes" can only get the rows
HI,
How could i get the rows affected by current sql statement ?
"sqlite3_changes" can only get the rows affected by the most recently sql
statement which really affect rows.
But i don't know whether current sql statement can affect rows.
For example:
1) First ,i open the database connection.
On Dec 25, 2009, at 1:45 AM,
wrote:
> Hey Dan,
> Please be patient with my English. I wonder if you would like to
> tell me what
> I am doing wrong. I use Borland C++ Builder 3.0, but it seems
> impossible to me
> to get sqlite3 up and running. I have included the sqlite3.c file in
> my
Hey Dan,
Please be patient with my English. I wonder if you would like to tell me what
I am doing wrong. I use Borland C++ Builder 3.0, but it seems impossible to me
to get sqlite3 up and running. I have included the sqlite3.c file in my
project. But the compiler reports some errors. The same go
On Tue, Sep 15, 2009 at 8:11 PM, Tito Ciuro wrote:
> On Sep 15, 2009, at 8:04 PM, Scott Hess wrote:
>> Do you have any reason to believe that your database had exactly a
>> single corruption?
>
> What do you mean by 'single corruption'? This particular database is
> prone to index corruption. We j
On 16 Sep 2009, at 4:11am, Tito Ciuro wrote:
> What do you mean by 'single corruption'? This particular database is
> prone to index corruption.
So use the sqlite3 command-line tool to dump it to a text file, then
read it back in again. See if the new database is prone to corruption
too.
S
Hi Scott,
On Sep 15, 2009, at 8:04 PM, Scott Hess wrote:
> Do you have any reason to believe that your database had exactly a
> single corruption?
What do you mean by 'single corruption'? This particular database is
prone to index corruption. We just don't know why yet. Why I reported
is wha
On Tue, Sep 15, 2009 at 7:04 PM, Tito Ciuro wrote:
> On Sep 15, 2009, at 6:59 PM, P Kishor wrote:
>
>> On Tue, Sep 15, 2009 at 8:50 PM, Tito Ciuro wrote:
>>> On Sep 15, 2009, at 6:42 PM, P Kishor wrote:
>>>
Could it be that those seemingly identical multiple rows actually
have
trai
On Sep 15, 2009, at 6:59 PM, P Kishor wrote:
> On Tue, Sep 15, 2009 at 8:50 PM, Tito Ciuro wrote:
>> On Sep 15, 2009, at 6:42 PM, P Kishor wrote:
>>
>>> Could it be that those seemingly identical multiple rows actually
>>> have
>>> trailing spaces or some other non-visible character? Check for
On Tue, Sep 15, 2009 at 8:50 PM, Tito Ciuro wrote:
> On Sep 15, 2009, at 6:42 PM, P Kishor wrote:
>
>> Could it be that those seemingly identical multiple rows actually have
>> trailing spaces or some other non-visible character? Check for their
>> length.
>
> Here we go:
>
>> sqlite> SELECT clien
On Sep 15, 2009, at 6:42 PM, P Kishor wrote:
> Could it be that those seemingly identical multiple rows actually have
> trailing spaces or some other non-visible character? Check for their
> length.
Here we go:
> sqlite> SELECT clientName, entityName, length(entityName) FROM
> MyDBState ORDER
On Tue, Sep 15, 2009 at 8:34 PM, Tito Ciuro wrote:
> Hello,
> On Sep 15, 2009, at 6:15 PM, P Kishor wrote:
>
> well, your clientName, entityName combo is not unique in the list
> above, and it should be given it is a PK. I have no idea how you
> managed to insert these rows while the PK constraint
Hello,
On Sep 15, 2009, at 6:15 PM, P Kishor wrote:
> well, your clientName, entityName combo is not unique in the list
> above, and it should be given it is a PK. I have no idea how you
> managed to insert these rows while the PK constraint was active.
Precisely.
I cannot reproduce this easily
On 16 Sep 2009, at 2:15am, P Kishor wrote:
> well, your clientName, entityName combo is not unique in the list
> above, and it should be given it is a PK. I have no idea how you
> managed to insert these rows while the PK constraint was active.
What happens in SQLite if you load the data first,
On Tue, Sep 15, 2009 at 4:22 PM, Tito Ciuro wrote:
> Hello,
>
> On Sep 15, 2009, at 12:55 PM, D. Richard Hipp wrote:
>
>>
>> On Sep 15, 2009, at 3:33 PM, Tito Ciuro wrote:
>>
>>> Hello,
>>>
>>> Given the following pragma integrity_check output:
>>>
sqlite> pragma integrity_check;
rowid 1
Hello,
On Sep 15, 2009, at 12:55 PM, D. Richard Hipp wrote:
>
> On Sep 15, 2009, at 3:33 PM, Tito Ciuro wrote:
>
>> Hello,
>>
>> Given the following pragma integrity_check output:
>>
>>> sqlite> pragma integrity_check;
>>> rowid 106931 missing from index sqlite_autoindex_MyDBState_1
>>> rowid 106
On Sep 15, 2009, at 3:33 PM, Tito Ciuro wrote:
> Hello,
>
> Given the following pragma integrity_check output:
>
>> sqlite> pragma integrity_check;
>> rowid 106931 missing from index sqlite_autoindex_MyDBState_1
>> rowid 106933 missing from index sqlite_autoindex_MyDBState_1
>> rowid 106935 missi
Hello,
Given the following pragma integrity_check output:
> sqlite> pragma integrity_check;
> rowid 106931 missing from index sqlite_autoindex_MyDBState_1
> rowid 106933 missing from index sqlite_autoindex_MyDBState_1
> rowid 106935 missing from index sqlite_autoindex_MyDBState_1
> wrong # of ent
Thank you very much!
this is my first time to use sqlite3. using prepared statements is a little
difficult. Could I avert to another way(more simple way) to achieve the same
thing?
Or where could I get some example codes on the method of using prepared
statements?
Igor Tandetnik wrote:
>
> "l
"liubin liu" <7101...@sina.com> wrote in message
news:22176984.p...@talk.nabble.com
> the question is on the callback function's return values of
> sqlite3_exec()
>
> when using sqlite3_exec() to do "select * from ...", how to get all
> the return values by using the callback function?
>
> it could
the question is on the callback function's return values of sqlite3_exec()
when using sqlite3_exec() to do "select * from ...", how to get all the
return values by using the callback function?
struct olt_info
{
int olt_index;
int olt_logo;
char* olt_line;
// int nmber;
};
int m
Carlos Suarez
wrote:
> I need to know how I can sum and count the field assoiated by record
> more especifically this:
>
> I got several tables associated
> ie: client --- buys
>name idbuy
>idcli idcli
> date
> and I need to count how many buys got every clien
thanks for answers so quickly,
I need to know how I can sum and count the field assoiated by record
more especifically this:
I got several tables associated
ie: client --- buys
name idbuy
idcli idcli
date
and I need to count how many buys got every client
Carlos Suarez
wrote:
> I need to know how I can split a date field with a slash in -, being
> straight I need to convert the the date format
> /mm/dd to -mm-dd
replace('/mm/dd', '/', '-')
http://sqlite.org/lang_corefunc.html
Igor Tandetnik
__
Hi,
I need to know how I can split a date field with a slash in -, being
straight I need to convert the the date format
/mm/dd to -mm-dd or something alike because flex builder
date format is with slash but sqlite operation results are return with (-)
in example:
STRFTIME('%J','20
Matthew:
I simply called tzset() after I extract the timezone file. It worked
like a charm. Thank you very much! I was having a heck of a time
information online.
On Thu, Jun 19, 2008 at 4:53 PM, Matthew L. Creech <[EMAIL PROTECTED]> wrote:
> On Thu, Jun 19, 2008 at 4:35 PM, Matthew L. Creech <
On Thu, Jun 19, 2008 at 4:35 PM, Matthew L. Creech <[EMAIL PROTECTED]> wrote:
>
> I think this behavior is probably due to the way localtime() works in
> glibc. From what I've seen (at least on my embedded ARM-Linux board),
> localtime() only invokes tzset() the first time it's run by an
> applica
On Thu, Jun 19, 2008 at 3:28 PM, Rich Rattanni <[EMAIL PROTECTED]> wrote:
>
> So this email isn't blaming SQLite for my improper timestamps even
> after I set the correct zoneinfo file. I am just trying to
> understand what is going on. Should I assume that my observation of
> 'Set zoneinfo first
All:
I noticed the following when using sqlite to timestamp flags in an
embedded system. I will lay out the tests performed and the results I
got.
First, an overview. I am working with a linux 2.6.26 kernel and
sqlite v3.5.0. For the handling of timezones, I use the zoneinfo
files. /etc/local
Lee Crain wrote:
Igor,
I have a question.
Why is it "highly recommended" to use the function call sequence you
iterate in preference to the sqlite3_exe call, since it is implemented
using that sequence?
Lee Crain
The callback method did not turn out to be such a good idea in practice
and w
Igor,
I have a question.
Why is it "highly recommended" to use the function call sequence you
iterate in preference to the sqlite3_exe call, since it is implemented
using that sequence?
Lee Crain
_
-Original Message-
From: Igor Tandetnik [mailto:[EMAIL
I have an unusual problem where one database I access becomes, and
stays locked (any attempt to BEGIN, PREPARE, etc results in
SQLITE_BUSY). I am at a loss after 5 hours of debugging to see where
I am, undoubtedly, screwing up. The particular database houses system
operating parameters, and the C
ct: RE: [sqlite] A Question About Creating and Accessing a SQLite Database
in a RAM Drive
> Rich,
>
> We're going to delete and rewrite ~109,369 records in 5 tables
> every week.
>
>
> Hard drives are a minimum of 10,000 times slower than RAM. I'll
> let you
> kn
!
*
- Original Message -
From: Rich Shepard <[EMAIL PROTECTED]>
Date: Wednesday, August 22, 2007 1:14 am
Subject: RE: [sqlite] A Question About Creating and Accessing a SQLite Database
in a RAM Drive
> O
to a hard drive.
Lee Crain
_
-Original Message-
From: Rich Shepard [mailto:[EMAIL PROTECTED]
Sent: Tuesday, August 21, 2007 11:15 AM
To: sqlite-users@sqlite.org
Subject: RE: [sqlite] A Question About Creating and Accessing a SQLite
Dat
TED]
> Sent: Tuesday, August 21, 2007 11:15 AM
> To: sqlite-users@sqlite.org
> Subject: RE: [sqlite] A Question About Creating and Accessing a SQLite
> Database in a RAM Drive
>
> On Tue, 21 Aug 2007, Lee Crain wrote:
>
> > The approach I planned was a little different t
Lee Crain
_
-Original Message-
From: Rich Shepard [mailto:[EMAIL PROTECTED]
Sent: Tuesday, August 21, 2007 11:15 AM
To: sqlite-users@sqlite.org
Subject: RE: [sqlite] A Question About Creating and Accessing a SQLite
Database in a RAM Drive
On Tue, 21 Aug 2007, Lee C
On Tue, 21 Aug 2007, Lee Crain wrote:
The approach I planned was a little different than what you proposed.
That's fine, Lee.
This technique for performing database updates offline and then updating
the original database via a file copy operation has worked very well on
hard drives. I am o
tes.
Lee Crain
-Original Message-
From: Rich Shepard [mailto:[EMAIL PROTECTED]
Sent: Monday, August 20, 2007 5:36 PM
To: sqlite-users@sqlite.org
Subject: Re: [sqlite] A Question About Creating and Accessing a SQLite
Database in a RAM Drive
On Mon, 20 Aug 2007, Lee Crain wro
7 7:35 am
Subject: Re: [sqlite] A Question About Creating and Accessing a SQLite Database
in a RAM Drive
> On Mon, 20 Aug 2007, Lee Crain wrote:
>
> > Is there any reason why this would not be possible?
>
> Lee,
>
> Not at all. You can create the databse in memory as
On Mon, 20 Aug 2007, Lee Crain wrote:
Is there any reason why this would not be possible?
Lee,
Not at all. You can create the databse in memory as long as you have
sufficient storage for it. See the web pages for syntax. If you do not
specify a filename when you invoke sqlite3, it's an in-m
Is there any reason why this would not be possible?
Data persistence is not required.
Thanks,
Lee Crain
-
To unsubscribe, send email to [EMAIL PROTECTED]
---
Mario Frasca uttered:
Christian Smith wrote:
You can use the rowid to track the row version, and a unique constraint on
your key to track conflicts. When updating a record, read the row,
including the rowid. Update any columns.
When writing the row out, delete the existing rowid, then inser
Christian Smith wrote:
You can use the rowid to track the row version, and a unique
constraint on your key to track conflicts. When updating a record,
read the row, including the rowid. Update any columns.
When writing the row out, delete the existing rowid, then insert the
new updated row,
hongdong uttered:
I just have a base question:
assume user A and user B now both connection to a same database and both of
them want to update a same record,but only one is allowed
in this condition:
A begin to browse the data in a client application,and load rowid into GUI
and keep it in memo
thank you all,all your ideas are good.btw,Stanton's logic transaction is a
little hard to understand,can you show me a link where I can read the
detail.
2006/12/7, Nicolas Williams <[EMAIL PROTECTED]>:
On Wed, Dec 06, 2006 at 12:51:29PM -0600, John Stanton wrote:
> To fully handle the situatio
On Wed, Dec 06, 2006 at 12:51:29PM -0600, John Stanton wrote:
> To fully handle the situation you need to know how many users have a
> transaction pending and are pondering ordering the item. That requires
> some form of journal or "committed" total. If you have three items and
> there are thr
Nicolas Williams wrote:
On Wed, Dec 06, 2006 at 11:36:11AM -0600, John Stanton wrote:
I fully understood. It is an age old problem that has puzzled
generations of system designers. My first exposure was over thirty
years ago. The approach we discovered worked was to treat it as a
transacti
On Wed, Dec 06, 2006 at 11:36:11AM -0600, John Stanton wrote:
> I fully understood. It is an age old problem that has puzzled
> generations of system designers. My first exposure was over thirty
> years ago. The approach we discovered worked was to treat it as a
> transaction in the logical s
Nicolas Williams wrote:
On Wed, Dec 06, 2006 at 10:04:42AM -0600, John Stanton wrote:
hongdong wrote:
I just have a base question:
assume user A and user B now both connection to a same database and both of
them want to update a same record,but only one is allowed
in this condition:
A begin
On Wed, Dec 06, 2006 at 10:04:42AM -0600, John Stanton wrote:
> hongdong wrote:
> >I just have a base question:
> >assume user A and user B now both connection to a same database and both of
> >them want to update a same record,but only one is allowed
> >in this condition:
> >A begin to browse th
hongdong wrote:
I just have a base question:
assume user A and user B now both connection to a same database and both of
them want to update a same record,but only one is allowed
in this condition:
A begin to browse the data in a client application,and load rowid into GUI
and keep it in memory.
-Original Message-
From: Nikki Locke [mailto:[EMAIL PROTECTED]
Sent: Wednesday, December 06, 2006 6:06 AM
To: sqlite-users@sqlite.org
Subject: Re: [sqlite] a question about muticonnection
Hongdong wrote:
> I just have a base question:
> assume user A and user B now both connect
Thanks a lot,Nikki's solution is what I think about,but this may lost some
efficiency,maybe this is the only way.
Mario's solution is more easy,but there something hard to control,somebody
will just open the window,displaying the data,but he will never modify the
data,that will resist other client
hongdong wrote:
I just have a base question:
assume user A and user B now both connection to a same database and
both of
them want to update a same record,but only one is allowed
in this condition:
A begin to browse the data in a client application,and load rowid into
GUI
and keep it in me
Hongdong wrote:
> I just have a base question:
> assume user A and user B now both connection to a same database and both of
> them want to update a same record,but only one is allowed
> in this condition:
> A begin to browse the data in a client application,and load rowid into GUI
> and kee
I just have a base question:
assume user A and user B now both connection to a same database and both of
them want to update a same record,but only one is allowed
in this condition:
A begin to browse the data in a client application,and load rowid into GUI
and keep it in memory.
B update the rec
Hello to all!
I am developing a application for great performance and I want to know how
SQLite works for merger two list of index, because as i understand every
index is a b-tree right?
Please help me because i need great perfomance, i am developing a very large
Inverted Index.
Thanks to all
--- Keith Herold <[EMAIL PROTECTED]> wrote:
> Hi all;
>
> I know that nested queries in the FROM and WHERE clauses are compiled
> and run just once. Is that true for the nested queries in the SELECT
> clause as well?
>
> For example:
>
> SELECT firstname AS First,
> (SELECT name
Distuinguish between compiled and executed. Sub-queries as expressions
are always compiled exactly once.
If the sub-query doesn't contain references to the outer query, it is
executed the first time it is needed and the results cached.
For example, if I have:
CREATE TABLE ab(a, b);
CREATE
Hi all;
I know that nested queries in the FROM and WHERE clauses are compiled
and run just once. Is that true for the nested queries in the SELECT
clause as well?
For example:
SELECT firstname AS First,
(SELECT name as Last
FROM tbl_of_last_names
WHE
Is there anyplace to download the mailing list archive in mbox format?
-joe
--
Person who say it cannot be done should not interrupt person doing it.
-- Old Scottish Proverb
96 matches
Mail list logo
