On Fri, Sep 23, 2016 at 9:14 PM, Арсен Арутюнян wrote:
> would you like to help me with several questions:
> 1)are all functions atomic?
Yes, of course.
> 2)are they execute in a single query?
Same as executing n-number of SQL statements between BEGIN-COMMIT block.
Regards,
Amul
--
Sent v
On 09/23/2016 08:44 AM, Арсен Арутюнян wrote:
Hello all
i have the table
create table testpr(id serial,priority integer,unique(priority)
DEFERRABLE, primary key(id));
and procedure:
CREATE OR REPLACE FUNCTION JobPriorityChange(JobId bigint,NewPrior
integer) RETURNS void AS $$
DECLARE
PrevPrio
Hello all
i have the table
create table testpr(id serial,priority integer,unique(priority) DEFERRABLE,
primary key(id));
and procedure:
CREATE OR REPLACE FUNCTION JobPriorityChange(JobId bigint,NewPrior integer)
RETURNS void AS $$
DECLARE
PrevPrior integer;
BEGIN
PrevPrior := (select priority
Steve Crawford writes:
> I would like to roll a number of steps into a transaction. What happens to
> the stats data generated by ANALYZE if the transaction is rolled back?
> This message says the stats are reverted:
> http://postgresql.nabble.com/Analyze-during-a-transaction-td5775069.html
That
We have certain processes that import data then process and distribute the
data. Since the processing looks primarily, but not exclusively, at the new
records an ANALYZE prior to processing yields better plans. Although the
table changes will trigger autovacuum to analyze the table this happens too
On Fri, Nov 21, 2014 at 1:14 AM, Alvaro Herrera
wrote:
>
> If there are foreign keys on the tables, the system internally runs some
> SELECT FOR KEY SHARE queries on the referenced tables (the ones
> containing the primary or unique keys). You can get some multixacts
> that way too.
>
> --
> Álv
Dev Kumkar wrote:
> On Thu, Nov 20, 2014 at 11:15 PM, Alvaro Herrera
> wrote:
> > Merely waiting does not, but more than one lock being acquired on a
> > tuple does cause a multixact to be created. Try SELECT FOR SHARE on two
> > transactions on the same tuple.
>
> Sure.
> Also what if there are
On Thu, Nov 20, 2014 at 11:15 PM, Alvaro Herrera
wrote:
> Search for "burnmulti" in the archives, which is a contrib module to
> test pg_multixact.
>
Thanks, got some links. Will give a try and get back.
Merely waiting does not, but more than one lock being acquired on a
> tuple does cause a mu
Dev Kumkar wrote:
> Hellos,
>
> How to manually increase pg_multixact members and offsets?
Search for "burnmulti" in the archives, which is a contrib module to
test pg_multixact.
> Does a transaction waiting for exclusive lock or shared lock result into
> entry being created in pg_multixact?
Me
Hellos,
How to manually increase pg_multixact members and offsets?
Does a transaction waiting for exclusive lock or shared lock result into
entry being created in pg_multixact?
Excerpt of multixact.c:
/*-
2 *
3 * multixact
On 28 Feb 2011, at 22:07, Andre Lopes wrote:
> Hi,
>
> Thanks for the reply.
>
> How can I user the RETURNING without pl/sql? My PostgreSQL version is 8.3
>
> Can you give me some example?
http://www.postgresql.org/docs/8.3/interactive/sql-insert.html
Most notably the last example on that pag
Hi,
Thanks for the reply.
How can I user the RETURNING without pl/sql? My PostgreSQL version is 8.3
Can you give me some example?
Best Regards,
On Mon, Feb 28, 2011 at 7:00 PM, Alban Hertroys
wrote:
> On 28 Feb 2011, at 24:37, David Johnston wrote:
>
>> Using pl/pgsql you can:
>
> You don'
On 28 Feb 2011, at 24:37, David Johnston wrote:
> Using pl/pgsql you can:
You don't need pl/pgsql for that. You can return the resultset of the first
insert into a client-side variable (while still making use of the
RETURNING-clause of course).
Of course, the benefit of using pl/pgsql for this
that you need.
>
> David J.
>
> -Original Message-
> From: pgsql-general-ow...@postgresql.org
> [mailto:pgsql-general-ow...@postgresql.org] On Behalf Of Andre Lopes
> Sent: Sunday, February 27, 2011 3:34 PM
> To: postgresql Forums
> Subject: [GENERAL] Transactions
2011 3:34 PM
To: postgresql Forums
Subject: [GENERAL] Transactions and ID's generated by triggers
Hi,
I have a situation that I dont know how to deal.
I have 2 tables "tdir_uris_files" and "tdir_uri_files_details". Please see the
Image in attach.
The table "tdi
Hi,
I have a situation that I dont know how to deal.
I have 2 tables "tdir_uris_files" and "tdir_uri_files_details". Please
see the Image in attach.
The table "tdir_uris_files" have the field "id_ordinal" that is
originated by a trigger(before insert)
The table "tdir_uri_files_details" use the f
On 21 July 2010 10:43, Robot Tom wrote:
> Hi,
>
> Has there been any progress on nested transactions in the last 10 years?
>
PostgreSQL has had subtransactions since version 8.0, if that's what
you mean. If you're experiencing OOM a lot, a high work_mem setting is
often the culprit. This can be s
Hi,
Has there been any progress on nested transactions in the last 10 years?
I am in a situation where I have a script that executes a number of
functions that build and populate a database including a rather large
lookup table (80GB) along with a number of large indexes (10GB).
I am trying
Tkanks for the reply.
Best Regards,
On Sat, Feb 20, 2010 at 5:34 PM, Andreas Kretschmer <
akretsch...@spamfence.net> wrote:
> Andre Lopes wrote:
>
> >
> > But I can't complite if I add to the procedure a BEGIN and a COMMIT. I
> think
> > this BEGIN and COMMIT will make a real transaction or I
Andre Lopes wrote:
>
> But I can't complite if I add to the procedure a BEGIN and a COMMIT. I think
> this BEGIN and COMMIT will make a real transaction or I'am wrong?
Right, you are wrong ;-)
A function is atomic, you don't need a begin/commit inside.
Andreas
--
Really, I'm not out to des
Hi,
I need to do a procedure that does an INSERT and an UPDATE.
The procedure works in this way:
[quote]
CREATE OR REPLACE FUNCTION "public"."apr_insert_newsletter_distritos"
("pSTRING_ARRAY" varchar, "pEMAIL" varchar, "pITEMS" integer,
"pID_WEBSITE_RECOLHA" varchar) RETURNS void AS
$body$
DECLA
Grzegorz Jaśkiewicz wrote:
On Fri, Mar 13, 2009 at 12:03 PM, Jasid ZA wrote:
Hi,
Can we use sql transaction(BEGIN, COMMIT, REVOKE) inside a user defined
function in Postgresql 8.3?
looking forward to hear from you
Nope.
If function does something naughty - do RAISE EXCEPTION, that will
brea
Jasid ZA wrote:
Hi,
Can we use sql transaction(BEGIN, COMMIT, REVOKE) inside a user defined
function in Postgresql 8.3?
Would that part of the documentation help?
http://www.postgresql.org/docs/8.3/interactive/plpgsql-structure.html
"Functions and trigger procedures are always executed with
On Fri, Mar 13, 2009 at 12:03 PM, Jasid ZA wrote:
> Hi,
>
> Can we use sql transaction(BEGIN, COMMIT, REVOKE) inside a user defined
> function in Postgresql 8.3?
>
> looking forward to hear from you
Nope.
If function does something naughty - do RAISE EXCEPTION, that will
break transaction and que
Hi,
Can we use sql transaction(BEGIN, COMMIT, REVOKE) inside a user defined
function in Postgresql 8.3?
looking forward to hear from you
Thanks
-Jasid-
--
With warm regards
Jasid Z. A
+91 9946109809
On Thu, Oct 2, 2008 at 6:46 PM, Bob Henkel <[EMAIL PROTECTED]> wrote:
> Have you looked at creating a function in perl and creating a new
> connection? Or using a dblink query which can create a new connection?
> These two methods work. I have used them to insert to a log table regardless
> of the
No, in Oracle too SAVEPOINT and AUTONOMOUS transaction are different beasts.
On Thu, Oct 2, 2008 at 9:27 PM, Bob Henkel <[EMAIL PROTECTED]> wrote:
> Coming from an Oracle background my understanding is they're one in the
> same.
>
>
>
>
> On Thu, Oct 2, 2008 at 10:37 AM, Alvaro Herrera <
> [EMAIL
Coming from an Oracle background my understanding is they're one in the
same.
On Thu, Oct 2, 2008 at 10:37 AM, Alvaro Herrera
<[EMAIL PROTECTED]>wrote:
> Bob Henkel escribió:
> > Have you looked at creating a function in perl and creating a new
> > connection? Or using a dblink query which can
Have you looked at creating a function in perl and creating a new
connection? Or using a dblink query which can create a new connection?
These two methods work. I have used them to insert to a log table regardless
of the parent transaction being commited or rolled back.
A old example I posted of u
Gurjeet Singh escribió:
> I have seen this feature being asked for, and this work-around suggested so
> many times. If plpgql does it internally, why not provide a clean interface
> for this? Is there some road-block, or that nobody has ever tried it?
Initially we aimed at just exposing SAVEPOINT
Bob Henkel escribió:
> Have you looked at creating a function in perl and creating a new
> connection? Or using a dblink query which can create a new connection?
> These two methods work. I have used them to insert to a log table regardless
> of the parent transaction being commited or rolled back.
On Thu, Oct 2, 2008 at 8:40 PM, Alvaro Herrera
<[EMAIL PROTECTED]>wrote:
> Reg Me Please escribió:
> > Il Thursday 02 October 2008 16:15:10 Alvaro Herrera ha scritto:
>
> > > You can nest blocks arbitrarily, giving you the chance to selectively
> > > rollback pieces of the function. It's only a b
Have you looked at creating a function in perl and creating a new
connection? Or using a dblink query which can create a new connection?
These two methods work. I have used them to insert to a log table regardless
of the parent transaction being commited or rolled back.
A old example I posted of u
Alvaro Herrera <[EMAIL PROTECTED]> writes:
> Reg Me Please escribió:
>> You mean I can issue a ROLLBACK command within a BEGIN...END; block to roll
>> it
>> back?
> No -- I mean you can use BEGIN/EXCEPTION/END blocks as you like, nesting
> them or putting one after another. Complementing this w
Il Thursday 02 October 2008 17:10:23 Alvaro Herrera ha scritto:
> Reg Me Please escribió:
> > Il Thursday 02 October 2008 16:15:10 Alvaro Herrera ha scritto:
> > > You can nest blocks arbitrarily, giving you the chance to selectively
> > > rollback pieces of the function. It's only a bit more awkw
Reg Me Please escribió:
> Il Thursday 02 October 2008 16:15:10 Alvaro Herrera ha scritto:
> > You can nest blocks arbitrarily, giving you the chance to selectively
> > rollback pieces of the function. It's only a bit more awkward.
>
> You mean I can issue a ROLLBACK command within a BEGIN...END;
Il Thursday 02 October 2008 16:15:10 Alvaro Herrera ha scritto:
> Reg Me Please escribió:
> > Well, if it is a limitation, and having it would lead to a "better
> > product", why not making it a feature for the next still-open release?
>
> Because no one is working on implementing it?
>
> > In my o
Reg Me Please escribió:
> Well, if it is a limitation, and having it would lead to a "better product",
> why not making it a feature for the next still-open release?
Because no one is working on implementing it?
> In my opinion that's more than a limitation, it's a missing feature.
> In your code
Richard Huxton wrote:
>> After a discussion on comp.databases.postgresql I realized that this
>> is actually a limitation.
>>
>> Consider the following:
>>
>> BEGIN
>>UPDATE ...
>>UPDATE ...
>>UPDATE ...
>> EXCEPTION
>>WHEN integrity_constraint_violation THEN
>> ...
>> END;
Hi.
My humble opinion follows.
One point here is that the decision for the ROLLBACK could possibly be
different from errors.
It could simply be based upon a generic expression, not just the conditions
seen in "Appendix A" of the manual.
An exception is something different from a transaction, de
Well, if it is a limitation, and having it would lead to a "better product",
why not making it a feature for the next still-open release?
In my opinion that's more than a limitation, it's a missing feature.
In your code you often need to create savepoints to delay the decision for the
commitment.
Albe Laurenz wrote:
> After a discussion on comp.databases.postgresql I realized that this
> is actually a limitation.
>
> Consider the following:
>
> BEGIN
>UPDATE ...
>UPDATE ...
>UPDATE ...
> EXCEPTION
>WHEN integrity_constraint_violation THEN
> ...
> END;
>
> If the fir
Alvaro Herrera wrote:
> > > Is there a way to have (sub)transactions within a function body?
> > > I'd like to execute some code (a transaction!) inside a function and later
> > > decide whether that transaction is to be committed or not.
> >
> > You could issue a "SAVEPOINT name". If at the end y
Dennis Brakhane escribió:
> On Wed, Oct 1, 2008 at 5:54 PM, Reg Me Please <[EMAIL PROTECTED]> wrote:
> > Hi all.
> >
> > Is there a way to have (sub)transactions within a function body?
> > I'd like to execute some code (a transaction!) inside a function and later
> > decide whether that transactio
On Wed, Oct 1, 2008 at 5:54 PM, Reg Me Please <[EMAIL PROTECTED]> wrote:
> Hi all.
>
> Is there a way to have (sub)transactions within a function body?
> I'd like to execute some code (a transaction!) inside a function and later
> decide whether that transaction is to be committed or not.
You coul
Hi all.
Is there a way to have (sub)transactions within a function body?
I'd like to execute some code (a transaction!) inside a function and later
decide whether that transaction is to be committed or not.
Thanks.
--
Sent via pgsql-general mailing list (pgsql-general@postgresql.org)
To make c
Reg Me Please <[EMAIL PROTECTED]> schrieb:
> Hi all.
>
> Is there a way to have (sub)transactions within a function body?
No.
Andreas
--
Really, I'm not out to destroy Microsoft. That will just be a completely
unintentional side effect. (Linus Torvalds)
"If I was
On Wednesday 11 April 2007 14:01:55 Alberto Molteni wrote:
> >You should use
> >
> > conn.setAutoCommit(false);
> > conn.execute(...)
> > conn.execute(...)
> > conn.execute(...)
> > conn.commit();
> >
> >
> > Thanks!
>
> jan
>
> Then, conn.setAutoCommit(false); has to be regarded as a begin s
On Wednesday 11 April 2007 12:49:49 Albert wrote:
> Hi all!
>
> Actually I have a client-server application with one server and many
> clients each one of which opens a different connection to the postgres
> database. In order to avoid those known problems with the execution of
> the different clie
You should use
conn.setAutoCommit(false);
conn.execute(...)
conn.execute(...)
conn.execute(...)
conn.commit();
Thanks!
jan
Then, conn.setAutoCommit(false); has to be regarded as a begin statement?
I had already put the autocommit flag to false soon after the creation of
the connec
Hi all!
Actually I have a client-server application with one server and many
clients each one of which opens a different connection to the postgres
database. In order to avoid those known problems with the execution of
the different clients' operations at database, I implemented
everything in this
Try to use ADO
Dim con as ADODB.Connection
set con = new ADODB.Connection
con.Open "DRIVER={PostgreSQL};
SERVER=ipaddress; port=5432;
DATABASE=dbname;
UID=username;PWD=password;"
con.BeginTrans
con.Execute "UPDATE accounts SET balance = balance + 10
Cool. I knew ADO could do transactions on Access's JET database
engine, but didn't know they could do so on another RDBMS like
PostgreSQL. So basically I can use the BeginTrans and CommitTrans to
do the work of PostgreSQL's BEGIN; and COMMIT;
On a adjacent topic, how does PostgreSQL know that Be
Karen Hill wrote:
>>From Access I'd like to run pass the following from MS Access to
> PostgreSQL 8.1 using VBA:
>
> BEGIN;
> UPDATE accounts SET balance = balance + 100.00 WHERE acctnum = 12345;
> UPDATE accounts SET balance = balance - 100.00 WHERE acctnum = 7534;
> COMMIT;
>
> It won't let me
Bruce Momjian wrote:
> Karen Hill wrote:
> > >From Access I'd like to run pass the following from MS Access to
> > PostgreSQL 8.1 using VBA:
> >
> > BEGIN;
> > UPDATE accounts SET balance = balance + 100.00 WHERE acctnum = 12345;
> > UPDATE accounts SET balance = balance - 100.00 WHERE acctnum = 7
Karen Hill wrote:
> >From Access I'd like to run pass the following from MS Access to
> PostgreSQL 8.1 using VBA:
>
> BEGIN;
> UPDATE accounts SET balance = balance + 100.00 WHERE acctnum = 12345;
> UPDATE accounts SET balance = balance - 100.00 WHERE acctnum = 7534;
> COMMIT;
>
> It won't let me
>From Access I'd like to run pass the following from MS Access to
PostgreSQL 8.1 using VBA:
BEGIN;
UPDATE accounts SET balance = balance + 100.00 WHERE acctnum = 12345;
UPDATE accounts SET balance = balance - 100.00 WHERE acctnum = 7534;
COMMIT;
It won't let me. Any ideas solutions?
--
On Saturday 18 March 2006 12:58, Florian G. Pflug wrote:
> Kevin Brown wrote:
> > So what you're saying is that my commits and rollbacks should be async,
> > correct?
>
> No, you should always use _async(), and never, ever use query() or exec()
> in a multi-threaded app.
>
> > I don't quite underst
Kevin Brown wrote:
On Saturday 18 March 2006 12:31, Florian G. Pflug wrote:
I've been creating a databased application with PostgreSQL for a while
now and have loved it, though we just recently stumbled on an interesting
bug.
I have a particular dialog which can do all kinds of incredibly
compl
On Saturday 18 March 2006 12:31, Florian G. Pflug wrote:
> Kevin Brown wrote:
> > I've been creating a databased application with PostgreSQL for a while
> > now and have loved it, though we just recently stumbled on an interesting
> > bug.
> >
> > I have a particular dialog which can do all kinds o
Kevin Brown wrote:
I've been creating a databased application with PostgreSQL for a while now and
have loved it, though we just recently stumbled on an interesting bug.
I have a particular dialog which can do all kinds of incredibly complicated
things to the database. Of course I didn't want
Kevin Brown <[EMAIL PROTECTED]> writes:
> When the "deadlock" occurs:
> [EMAIL PROTECTED]:~> ps -elF | grep postgres
> 1 S postgres 6020 17767 0 75 0 - 10585 - 15136 0 19:57 ?
> 00:00:29 postgres: dli dli 127.0.0.1(39869) idle in transaction
> 1 S postgres 6195 17767 0 76 0 - 10323 semtim
On Saturday 18 March 2006 00:19, Tom Lane wrote:
> Kevin Brown <[EMAIL PROTECTED]> writes:
> > So when the dialog opens, it executes a BEGIN, and then based on whether
> > they clicked ok or cancel on the dialog, it'd COMMIT or ROLLBACK. This
> > worked fine for me in testing, but now that I have
Kevin Brown <[EMAIL PROTECTED]> writes:
> So when the dialog opens, it executes a BEGIN, and then based on whether they
> clicked ok or cancel on the dialog, it'd COMMIT or ROLLBACK. This worked
> fine for me in testing, but now that I have two people using this app
> simulatneously, if they bot
I've been creating a databased application with PostgreSQL for a while now and
have loved it, though we just recently stumbled on an interesting bug.
I have a particular dialog which can do all kinds of incredibly complicated
things to the database. Of course I didn't want to have to write the
Ledina Hido wrote:
Thinking about it, the EXCEPTION statement would be inside my user-
defined function (where I raise the exception in the first place), so I
cannot see how that would help. As far as I could understand, I cannot
call "ROLLBACK" (which is what I want to do) inside a user d
Hi,
I am trying to use triggers inside transactions to perform some multiplicity
checking on the data inserted onto the tables but I am having some problems
retrieving the error message.
I have two tables declared as follows:
>
create table pers (
pid int not null primary
On Tue, Nov 08, 2005 at 11:03:50PM +, Ledina Hido wrote:> Quoting Tom Lane <[EMAIL PROTECTED]>:> > > What are you running this in? ISTM this is a problem with bad > structure> > of client-side code, not something to be fixed on the server side.> >> > regards, tom lane>
That's great. Thank you very much for you help.LedinaOn Tue, Nov 08, 2005 at 11:03:50PM +, Ledina Hido wrote:> Quoting Tom Lane <[EMAIL PROTECTED]>:> > > What are you running this in? ISTM this is a problem with bad > structure> > of client-side code, not something to be fixed on the server s
On Tue, Nov 08, 2005 at 11:03:50PM +, Ledina Hido wrote:
> Quoting Tom Lane <[EMAIL PROTECTED]>:
>
> > What are you running this in? ISTM this is a problem with bad
> structure
> > of client-side code, not something to be fixed on the server side.
> >
> > regards, tom la
Quoting Tom Lane <[EMAIL PROTECTED]>:
> What are you running this in? ISTM this is a problem with bad
structure
> of client-side code, not something to be fixed on the server side.
>
>regards, tom lane
I'm using pgAdmin3. Basically when I run the query the first time it
Ledina Hido <[EMAIL PROTECTED]> writes:
> Now when I run the following (after inserting person with id=5 into
> pers table):
> begin;
> set constraints all deferred;
> insert into tasks (pid, task) values (5, 'firstTask');
> insert into tasks (pid, task) values (5, 'secondTask');
> insert into t
Hi all, Sorry for the trouble but I am trying to use triggers inside transactions to perform some multiplicity checking on the data inserted onto the tables but I am having some problems retrieving the error message. I have two tables declared as follows:> create table pers (
On Mon, Jun 06, 2005 at 09:21:15AM -0400, Douglas McNaught wrote:
> "Surabhi Ahuja " <[EMAIL PROTECTED]> writes:
>
> > say i have two transactions going on simultaneoulsy.
> > in one transaction i do an insertion
> > and the other transaction i do a delete.
> > what will happen if in both the tran
"Surabhi Ahuja " <[EMAIL PROTECTED]> writes:
> Hello everyone.
> I have the following question:
>
> say i have two transactions going on simultaneoulsy.
> in one transaction i do an insertion
> and the other transaction i do a delete.
> what will happen if in both the transactions, the insert(in o
Title: transactions
Hello everyone.
I have the following question:
say i have two transactions going on simultaneoulsy.
in one transaction i do an insertion
and the other transaction i do a delete.
what will happen if in both the transactions, the insert(in one) and delete(in the other) are
Ron Peterson <[EMAIL PROTECTED]> writes:
> Do the multiple actions within a multiple action rule implicitly reside
> within a transaction?
Yes. In the current code it is actually not possible for a single SQL
command issued by the client to give rise to more than one transaction.
(This might chan
On Mon, Dec 20, 2004 at 23:15:39 -0500,
Ron Peterson <[EMAIL PROTECTED]> wrote:
> Do the multiple actions within a multiple action rule implicitly reside
> within a transaction? I notice that if I brace my multiple actions with
> BEGIN; and COMMIT;, that I get a syntax error, so I'm assuming tha
Do the multiple actions within a multiple action rule implicitly reside
within a transaction? I notice that if I brace my multiple actions with
BEGIN; and COMMIT;, that I get a syntax error, so I'm assuming that's
because they are superfluous in that context... ?
(I want to be sure that I can cou
My mistake. There was something else going on and I misinterpreted
the cause of the problem. The foreign key references are valid within
the transaction even though the initial updates are not yet committed.
apologies for the distraction and thanks again for your help.
On Wed, 15 Dec 2004 10:3
On Wed, Dec 15, 2004 at 11:53:55AM -0500, Larry White wrote:
> I have a function that calls other functions. These other functions
> are inserting rows and return the primary key for the inserted row.
> Some of the tables are related in a way that they have a foreign key
> reference to a table
I have never tested a particular scenario like this out, but would AFTER
INSERT triggers resolve this issue for you?
On Wednesday 15 December 2004 11:53 am, Larry White saith:
> Hi,
>
> I've run into a situation (I should have forseen) and was hoping
> someone could show me a way out.
>
> I have
Hi,
I've run into a situation (I should have forseen) and was hoping
someone could show me a way out.
I have a function that calls other functions. These other functions
are inserting rows and return the primary key for the inserted row.
Some of the tables are related in a way that they have
Hi,
Am Dienstag, den 16.11.2004, 11:22 +0100 schrieb Stefano Farina:
> Hi all
> I have to develop an embedded database using memory FLASH and memory
> RAM
> Some tables must be saved in RAM and some tables in FLASH ( RAM and
> FLASH are two different mounted directories in the file system).
> I sa
On Tue, 16 Nov 2004 11:22:27 +0100, Stefano Farina
<[EMAIL PROTECTED]> wrote:
>
> Hi all
> I have to develop an embedded database using memory FLASH and memory RAM
> Some tables must be saved in RAM and some tables in FLASH ( RAM and FLASH
> are two different mounted directories in the file sys
Hi all
I have to develop an embedded database using
memory FLASH and memory RAM
Some tables must be saved in RAM and some tables in
FLASH ( RAM and FLASH are two different mounted directories in the file
system).
I saw it's possible to save different
databases in different directories with C
Hi,
I'm trying to work out how to make sure things are read from a table in
a consistent order. The table represents a queue of items and also the
history of those items.
Even with "serializable" transaction isolation I can begin two
transactions, insert a record in each, commit the second transa
On Friday 19 March 2004 13:01, Martin Marques wrote:
> I'm building some functions in plpgsql, and I got to a point where I
> thought: How are transactions used in the function? Is it posible to
> rollback the modifications that were made to the tables at some point in
> the plpgsql function?
You
I'm building some functions in plpgsql, and I got to a point where I thought:
How are transactions used in the function? Is it posible to rollback the
modifications that were made to the tables at some point in the plpgsql
function?
--
09:58:01 up 10 days, 14:29, 4 users, load average: 0.11
Is it possible to write C code (presumably using libpq) to carry out
transactions? I can't seem to find functions in this API which start
and end a transaction. If this is not possible, what other
programming interfaces will allow me to write transaction code?
Thanks
---(
Hello:
I need to modify diferent tables in multiples databases in one transaction.
Can i do it whitout lost integrity in all databases if "rollback" is
executed?
Thanks,
Sergio Pili
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hi over there,
how am i able to let a transaction exist among several connections, or
is just one possible ? cause my phpskript cuts connection from db
bevor reloading itself ofcourse :-)
-how can i get information about the group which a user belongs to and
its rights ?
Thanx a lot
Ravi
-
Fabrizio Mazzoni wrote:
> Can i use transactions in rules??
> I was trying something like:
>
> create rule x_test as
> on insert to view1
> do instead
> (
>begin;
>insert into test1 values (new.a,new.b);
>insert into test2 values (new.c,new.d);
>commit;
> );
>
> But when i give thi
Hi everybody,
my subject is about : DBI / PostgreSql & Transactions with Perl.
my code is :
$dbh->{AutoCommit} = 0; # begin of transaction
while () {
...
$sql = "insert into $table ($col) values ($val)";
$res = $dbh->do($sql);
}
$dbh->rollback;#
I were testing out (using psql) transactions and locking in postgresql using
only BEGIN/UPDATE(on a specific table)/COMMIT&ROLLBACK and notices several
time that instead of waiting it went into *ABORT STATE*. Why is this?
Also I notice that COMMIT'ing a deadlock'ed transaction did nothing but a
Basically, answer is: you can't do it, no matter how you slice it, for a
simple reason: postgres doesn't support nested transactions [yet?].
On Sun, 28 Jan 2001, Alan Turner wrote:
> Hi
>
> I've been searching the web/mailing lists/web boards for the answer to a
> question I have regarding pos
On Fri, 22 Sep 2000, Neil Conway wrote:
> Consider the following (PgSQL 7.0.2):
>
> CREATE SEQUENCE foo;
> SELECT nextval('foo');
> -- returns 1
> BEGIN WORK;
> SELECT nextval('foo');
> -- returns 2
> ABORT WORK;
> SELECT nextval('foo');
> -- returns 3
>
> As you can see, even though the trans
Consider the following (PgSQL 7.0.2):
CREATE SEQUENCE foo;
SELECT nextval('foo');
-- returns 1
BEGIN WORK;
SELECT nextval('foo');
-- returns 2
ABORT WORK;
SELECT nextval('foo');
-- returns 3
As you can see, even though the transaction has been aborted, the
sequence is still incremented. Is there
- Original Message -
From: "Lincoln Yeoh" <[EMAIL PROTECTED]>
> What are the recommended ways to do transactions in web applications?
>
> Right now I have persistent database connections, but currently they are
> shared by multiple sessions. So I make sure that database level
> transaction
Lincoln Yeoh writes:
> At 10:01 PM 26-06-2000 -0400, Michael Mayo wrote:
> >- Original Message -
> >From: "Lincoln Yeoh" <[EMAIL PROTECTED]>
> >> What are the recommended ways to do transactions in web applications?
> Let me illustrate the problem with an example:
>
> page 1
> user logs
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