From:
Operating system: all
PHP version: 5.3.3
Package: MySQLi related
Bug Type: Bug
Bug description:Binding params doesn't work when selecting a date inside a
CASE-WHEN
Description:
------------
This is MySQL Bug #49406 Binding params doesn't work when selecting a date
inside a CASE-WHEN
Description:
When querying a date field (must be type "date"!) inside a CASE-WHEN block,
the
result-binding fails (does return only empty or incorrect values for all
selected
fields), when using the prepare()/execute() API-functions. When using the
query()
API-function instead, it works as expected.
Sample query:
SELECT CASE
WHEN 0 THEN CAST('2009-12-03' AS DATE)
ELSE CAST('2009-12-03' AS DATE)
END
When skipping the CASE-WHEN and selecting the ELSE-value directly, it works
always as
expected (with both API-functions):
SELECT CAST('2009-12-03' AS DATE)
In summary, this three conditions must be true, to reproduce the problem:
- Result-parameter binding using bind_result() must be used
- one selected column using CASE-WHEN
- the fields inside this CASE-WHEN must be from type date
How to repeat:
I reproduced this with PHP mysqli client, but I guess the root of the
problem is
independent from the client:
<?php
$query = 'SELECT
CASE
WHEN 0 THEN CAST(\'2009-12-03\' AS DATE)
ELSE CAST(\'2009-12-03\' AS DATE)
END';
$dbMysqli = new mysqli('host', 'username', 'password');
// via mysqli::query:
$result = $dbMysqli->query($query);
$rowViaMysqli = $result->fetch_row();
$valueViaMysqli = $rowViaMysqli[0];
echo "Fetched via mysqli::query():\n";
var_dump($valueViaMysqli);
// Always correct output:
// output: string(10) "2009-12-03"
// via mysqli::prepare/execute:
$stmt = $dbMysqli->prepare($query);
$stmt->execute();
$stmt->store_result();
$valueViaMysqli = null;
$stmt->bind_result($valueViaMysqli);
$stmt->fetch();
echo "\nFetched via
mysqli::prepare/execute/store_result/bind_result/fetch:\n";
var_dump($valueViaMysqli);
// Different output on different clients/servers, but always wrong:
// output on PHP 5.2/MySQL 5.1.37: null
// output on PHP 5.3/MySQL 5.1.38: string(11) "12338-48-57"
--
Edit bug report at http://bugs.php.net/bug.php?id=52745&edit=1
--
Try a snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=52745&r=trysnapshot52
Try a snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=52745&r=trysnapshot53
Try a snapshot (trunk):
http://bugs.php.net/fix.php?id=52745&r=trysnapshottrunk
Fixed in SVN:
http://bugs.php.net/fix.php?id=52745&r=fixed
Fixed in SVN and need be documented:
http://bugs.php.net/fix.php?id=52745&r=needdocs
Fixed in release:
http://bugs.php.net/fix.php?id=52745&r=alreadyfixed
Need backtrace:
http://bugs.php.net/fix.php?id=52745&r=needtrace
Need Reproduce Script:
http://bugs.php.net/fix.php?id=52745&r=needscript
Try newer version:
http://bugs.php.net/fix.php?id=52745&r=oldversion
Not developer issue:
http://bugs.php.net/fix.php?id=52745&r=support
Expected behavior:
http://bugs.php.net/fix.php?id=52745&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=52745&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=52745&r=submittedtwice
register_globals:
http://bugs.php.net/fix.php?id=52745&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=52745&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=52745&r=dst
IIS Stability:
http://bugs.php.net/fix.php?id=52745&r=isapi
Install GNU Sed:
http://bugs.php.net/fix.php?id=52745&r=gnused
Floating point limitations:
http://bugs.php.net/fix.php?id=52745&r=float
No Zend Extensions:
http://bugs.php.net/fix.php?id=52745&r=nozend
MySQL Configuration Error:
http://bugs.php.net/fix.php?id=52745&r=mysqlcfg
