Bug #62054 [Com]: Column size is not reserved for all UNION
Edit report at https://bugs.php.net/bug.php?id=62054&edit=1
ID: 62054
Comment by: s-php at ertel-net dot de
Reported by: s-php at ertel-net dot de
Summary: Column size is not reserved for all UNION
Status: No Feedback
Type: Bug
Package: MySQLi related
Operating System: Ubuntu
PHP Version: 5.3.13
Block user comment: N
Private report: N
New Comment:
The bug still exists in PHP.
I provided all information as requested. What do you still need?
Previous Comments:
------------------------------------------------------------------------
[2013-02-18 00:35:51] 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 "Open". Thank you.
------------------------------------------------------------------------
[2012-07-02 18:47:42] s-php at ertel-net dot de
Sorry, column names changed. But I guess this should be no problem for you.
mysql> PREPARE x from "SELECT 'read' AS Action FROM friends UNION SELECT CASE
mysql> status WHEN 0 THEN 'request-received' WHEN 1 THEN 'confirmed' WHEN 2 THEN
mysql> 'x' END AS Action FROM friends";
Query OK, 0 rows affected (0.00 sec)
Statement prepared
mysql> execute x;
Field 1: Action
Catalog: def
Database: ``
Table: ``
Org_table: ``
Type: VAR_STRING
Collation: utf8_general_ci (33)
Length: 48
Max_length: 16
Decimals: 0
Flags:
+------------------+
| Action |
+------------------+
| read |
| confirmed |
| request-received |
| x |
+------------------+
4 rows in set (0.00 sec)
------------------------------------------------------------------------
[2012-07-02 13:36:15] uw@php.net
99% sure: Server bug, not a client issue.
Please, report column type information retrieved on the MySQL prompt when preparing the statement
using SQL PREPARE and then executing it. Log in to the MySQL prompt using --column-type-info option
to see the meta data reported by the server.
------------------------------------------------------------------------
[2012-05-17 13:28:21] s-php at ertel-net dot de
Description:
------------
When I concatenate two queries with UNION an there are static strings in the queries, mysqli only
reserves a big enough variable for the strings in the first query.
If there are static strings in the other queries after the UNION, the strings are just cut off.
Test script:
---------------
$stmt = $this->mysqli->prepare("SELECT 'read' AS Action FROM tbl1
UNION
SELECT CASE status WHEN 0 THEN 'request-received' WHEN 1 THEN 'confirmed' WHEN 2
THEN 'x' END AS Action FROM tbl2");
$stmt->bind_result($action);
$stmt->execute();
while($stmt->fetch())
{
echo $action . " ";
}
Expected result:
----------------
expected output is: read request-received confirmed
Actual result:
--------------
actual output is: read request-recei confirmed
The "request-received" is cut off!
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Edit this bug report at https://bugs.php.net/bug.php?id=62054&edit=1
Thread (5 messages)