Re: *** QUESTION *** After successful 'BEGIN;' command -- why PGSQL_TRANSACTION_ACTIVE and not PGSQL_TRANSACTION_INTRANS?

Hello Daniel,

Thanks for your response.

Ahhh -- so after a successful query, the PHP program must keep executing
pg_get_result($cnx) until a NULL result is obtained !!

And ONLY THEN does transaction status transition from
PGSQL_TRANSACTION_ACTIVE to PGSQL_TRANSACTION_INTRANS.

OK -- makes sense to me -- I will change the code accordingly.

* * *
* * *

BTW -- this PostgreSQL newbie (bye bye mysql) is getting a nice warm fuzzy
feeling, about PostgreSQL and its amazingly helpful community :)

Best,

Steve

* * *

Steve Petrie, P.Eng.

ITS-ETO Consortium
Oakville, Ontario, Canada
(905) 847-3253
apetrie@aspetrie.net

----- Original Message -----
From: "Daniel Verite" <daniel@manitou-mail.org>
To: "Steve Petrie, P.Eng." <apetrie@aspetrie.net>
Cc: "rob stone" <floriparob@gmail.com>; <pgsql-general@postgresql.org>
Sent: Monday, October 12, 2015 5:22 AM
Subject: Re: [GENERAL] *** QUESTION *** After successful 'BEGIN;' command --
why PGSQL_TRANSACTION_ACTIVE and not PGSQL_TRANSACTION_INTRANS?


Steve Petrie, P.Eng. wrote:

> And yes, I am using pg_send_query(...) to execute the BEGIN; command, so
> as
> to get a result resource returned. (Please see my forthcoming emailed
> response to Adrian Klaver, wherein I provide the PHP source code that
> Adrian
> requests.)

After successfully calling pg_send_query($cnx, $query),
pg_transaction_status($cnx) will return PGSQL_TRANSACTION_ACTIVE
until the results have been collected by looping over pg_get_result($cnx).

This is for any query, not specifically $query="BEGIN".

Example:

<?php
 if (pg_send_query($dbcnx, "BEGIN")) {
  do {
   $res=pg_get_result($dbcnx);
   // error processing here
 } while ($res);
  echo pg_transaction_status($dbcnx);
?>

This will output 2, which corresponds to PGSQL_TRANSACTION_INTRANS
as expected.

OTOH if commenting the call to pg_get_result($dbcnx), then
it ouputs 1 (PGSQL_TRANSACTION_ACTIVE) as you mentioned.


Best regards,
--
Daniel Vérité
PostgreSQL-powered mailer: http://www.manitou-mail.org
Twitter: @DanielVerite


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