Bug #54508 [NEW]: mysqli: truncated floats

From: Date: Mon, 11 Apr 2011 17:08:00 +0000
Subject: Bug #54508 [NEW]: mysqli: truncated floats
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-160103@lists.php.net to get a copy of this message 
From:             
Operating system: Linux
PHP version:      5.3.6
Package:          MySQLi related
Bug Type:         Bug
Bug description:mysqli: truncated floats

Description:
------------
There's an inconsistency in behaviour between mysqli and PDO_MSYQL in the
following SELECT, e.g.,

SELECT TRUNCATE(SUM(aFloatColumn),2) FROM aTable;

Let's say the sum of the column is 42.001.

With PDO_MYSQL, you'll get "42.00".

But with MYSQLI, you'll instead get "42".


Test script:
---------------
<?php
$link = mysqli_connect("localhost", "user", "password",
"dbname");

$query = 'CREATE TABLE t (f FLOAT)';
$stmt = mysqli_prepare($link, $query);
mysqli_stmt_execute($stmt);

$query = 'TRUNCATE TABLE t';
$stmt = mysqli_prepare($link, $query);
mysqli_stmt_execute($stmt);

$query = 'INSERT INTO t (f) VALUES (42.001)';
$stmt = mysqli_prepare($link, $query);
mysqli_stmt_execute($stmt);

$query = "SELECT truncate(sum(f), 2) from t";
$stmt = mysqli_prepare($link, $query);
mysqli_stmt_execute($stmt);

mysqli_stmt_bind_result($stmt, $revenue);
while (mysqli_stmt_fetch($stmt)) {
    printf ("%s\n", $revenue);
}

mysqli_stmt_close($stmt);
mysqli_close($link);


Expected result:
----------------
42.00

Actual result:
--------------
42

-- 
Edit bug report at http://bugs.php.net/bug.php?id=54508&edit=1
-- 
Try a snapshot (PHP 5.2):            http://bugs.php.net/fix.php?id=54508&r=trysnapshot52
Try a snapshot (PHP 5.3):            http://bugs.php.net/fix.php?id=54508&r=trysnapshot53
Try a snapshot (trunk):              http://bugs.php.net/fix.php?id=54508&r=trysnapshottrunk
Fixed in SVN:                        http://bugs.php.net/fix.php?id=54508&r=fixed
Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=54508&r=needdocs
Fixed in release:                    http://bugs.php.net/fix.php?id=54508&r=alreadyfixed
Need backtrace:                      http://bugs.php.net/fix.php?id=54508&r=needtrace
Need Reproduce Script:               http://bugs.php.net/fix.php?id=54508&r=needscript
Try newer version:                   http://bugs.php.net/fix.php?id=54508&r=oldversion
Not developer issue:                 http://bugs.php.net/fix.php?id=54508&r=support
Expected behavior:                   http://bugs.php.net/fix.php?id=54508&r=notwrong
Not enough info:                     http://bugs.php.net/fix.php?id=54508&r=notenoughinfo
Submitted twice:                     http://bugs.php.net/fix.php?id=54508&r=submittedtwice
register_globals:                    http://bugs.php.net/fix.php?id=54508&r=globals
PHP 4 support discontinued:          http://bugs.php.net/fix.php?id=54508&r=php4
Daylight Savings:                    http://bugs.php.net/fix.php?id=54508&r=dst
IIS Stability:                       http://bugs.php.net/fix.php?id=54508&r=isapi
Install GNU Sed:                     http://bugs.php.net/fix.php?id=54508&r=gnused
Floating point limitations:          http://bugs.php.net/fix.php?id=54508&r=float
No Zend Extensions:                  http://bugs.php.net/fix.php?id=54508&r=nozend
MySQL Configuration Error:           http://bugs.php.net/fix.php?id=54508&r=mysqlcfg

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