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Bug #54026 PostgreSQL: cannot bind NULL value to statement condition
Submitted: 2011-02-15 14:59 UTC Modified: 2013-10-15 11:54 UTC
From: abrahala at gmail dot com Assigned:
Status: No Feedback Package: PDO related
PHP Version: 5.3.5 OS: Debian GNU/Linux 2.6.26-2-amd64
Private report: No CVE-ID: None
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 [2011-02-15 14:59 UTC] abrahala at gmail dot com 
Description:
------------
It seems to be impossible to pass NULL value to a PDO PostgreSQL statement neither with bindValue nor using '?'-format and $statement->execute(array(null)).

Test script:
---------------
$pdo = new PDO('pgsql:host=localhost;port=5432;dbname=db', 'user', 'pass');
$statement = $pdo->prepare('SELECT \'ok\' WHERE NULL IS :nullValue');
$statement->bindValue(':nullValue', null, PDO::PARAM_NULL);
$statement->execute();
$result = $statement->fetchColumn(0);
var_export($result);

Expected result:
----------------
'ok'

Actual result:
--------------
false

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 [2011-02-15 15:28 UTC] abrahala at gmail dot com
-Summary: PostgreSQL: cannot bind NULL value to statement +Summary: PostgreSQL: cannot bind NULL value to statement condition
 [2011-02-15 15:28 UTC] abrahala at gmail dot com 
Sorry, I forgot to mention this only applies to binding a null value as part of a condition. Value assignment works fine (fieldName = :nullValue), so it might has to do something with the 'IS' keryword?
 [2011-07-30 23:36 UTC] dverite at gmail dot com 
You should write "...WHERE :nullValue IS NULL" instead of ".. WHERE NULL IS :nullValue", otherwise execute() fails with a syntax error.
I'm not sure your example would work anyway since passing a null value in a bind parameter seems problematic, but at least it would fail because of PDO and not because of the SQL itself :)
 [2013-06-28 20:16 UTC] yohgaki@php.net
-Status: Open +Status: Feedback
 [2013-06-28 20:16 UTC] yohgaki@php.net 
Did last comment work for you?
 [2013-10-15 11:54 UTC] php-bugs at lists dot php dot net 
No feedback was provided. The bug is being suspended because
we assume that you are no longer experiencing the problem.
If this is not the case and you are able to provide the
information that was requested earlier, please do so and
change the status of the bug back to "Re-Opened". Thank you.
 
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