Edit report at https://bugs.php.net/bug.php?id=46575&edit=1
ID: 46575
Comment by: ssufficool at gmail dot com
Reported by: ben at thelocust dot org
Summary: NULL comparison when using "not in" not consistent
with Windows SQL
Status: Open
Type: Feature/Change Request
Package: MSSQL related
Operating System: *
PHP Version: 5.2.6
Block user comment: N
Private report: N
New Comment:
This is a behavior set by the MSSQL "ANSI NULLS" setting. Depending if ANSI
NULLS is on or off, it will return the NULL for the NOT IN selection.
This is a server setting, not a PHP setting.
Try issuing a "SET ANSI_NULLS ON" before the query using both VBScript and PHP.
The behavior should then be the same.
Previous Comments:
------------------------------------------------------------------------
[2009-01-07 18:17:08] [email protected]
I don't see the error here, your asking SQL server to return 'test_id' from the
table 'test' where 'test_number' doesn't even to 1 or 2, and since NULL is
different from 1 and 2 then why shouldn't it be returned? I see that more of a
bug in the ASP/VBScript drivers, and I don't think we should put such an
inconsistency into because others do it.
I changed the category of this to a Feature/Change request, letting the
extension maintainer decided whenever to do it or not :)
------------------------------------------------------------------------
[2008-11-14 16:35:50] ben at thelocust dot org
Description:
------------
When querying a MSSQL database table, and using the "not in" syntax, PHP's
mssql_query will also return rows with NULL in the field specified.
Reproduce code:
---------------
SQL Server 2000 or 2005
Table "test"
test_id (int) test_name (vchar) test_number (int)
1 Foo 1
2 Bar 2
3 <null> 3
4 Baz <null>
$sql = "select test_id from test where test_number not in (1,2)";
$res = mssql_query($sql);
while ($row = mssql_fetch_array($res)) {
?>
<?=$row['test_id'];?><br/>
<?
}
Expected result:
----------------
In PHP, either using FreeTDS on Linux or the MSSQL extension on Windows, the
above returns:
3
4
In ASP/VBScript or using Query Analyzer on Windows the following is returned:
3
Windows' MSSQL driver apparently will not compare the "not in" values to a NULL
field. PHP, apparently, will.
This creates and inconsistency between the two platforms.
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Edit this bug report at https://bugs.php.net/bug.php?id=46575&edit=1
