>Description:

A specific query in the format of:

SELECT DISTINCT a.*, b.* FROM privatemessage LEFT JOIN b ON (b.x = a.y);

Is causing a segfault. This worked fine in the 3.23 series.

>How-To-Repeat:


DROP TABLE IF EXISTS privatemessage;
CREATE TABLE privatemessage (
  privatemessageid int(10) unsigned NOT NULL auto_increment,
  folderid smallint(6) NOT NULL default '0',
  userid int(10) unsigned NOT NULL default '0',
  touserid int(10) unsigned NOT NULL default '0',
  fromuserid int(10) unsigned NOT NULL default '0',
  title varchar(250) NOT NULL default '',
  message mediumtext NOT NULL,
  dateline int(10) unsigned NOT NULL default '0',
  showsignature smallint(6) NOT NULL default '0',
  iconid smallint(5) unsigned NOT NULL default '0',
  messageread smallint(6) NOT NULL default '0',
  readtime int(10) unsigned NOT NULL default '0',
  receipt smallint(6) unsigned NOT NULL default '0',
  deleteprompt smallint(6) unsigned NOT NULL default '0',
  multiplerecipients smallint(6) unsigned NOT NULL default '0',
  PRIMARY KEY  (privatemessageid),
  KEY userid (userid)
) TYPE=MyISAM;
INSERT INTO privatemessage VALUES 
(128,0,33,33,8,':D','',996121863,1,0,2,996122850,2,0,0);

DROP TABLE IF EXISTS user;
CREATE TABLE user (
  userid int(10) unsigned NOT NULL auto_increment,
  usergroupid smallint(5) unsigned NOT NULL default '0',
  username varchar(50) NOT NULL default '',
  password varchar(50) NOT NULL default '',
  email varchar(50) NOT NULL default '',
  styleid smallint(5) unsigned NOT NULL default '0',
  parentemail varchar(50) NOT NULL default '',
  coppauser smallint(6) NOT NULL default '0',
  homepage varchar(100) NOT NULL default '',
  icq varchar(20) NOT NULL default '',
  aim varchar(20) NOT NULL default '',
  yahoo varchar(20) NOT NULL default '',
  signature mediumtext NOT NULL,
  adminemail smallint(6) NOT NULL default '0',
  showemail smallint(6) NOT NULL default '0',
  invisible smallint(6) NOT NULL default '0',
  usertitle varchar(250) NOT NULL default '',
  customtitle smallint(6) NOT NULL default '0',
  joindate int(10) unsigned NOT NULL default '0',
  cookieuser smallint(6) NOT NULL default '0',
  daysprune smallint(6) NOT NULL default '0',
  lastvisit int(10) unsigned NOT NULL default '0',
  lastactivity int(10) unsigned NOT NULL default '0',
  lastpost int(10) unsigned NOT NULL default '0',
  posts smallint(5) unsigned NOT NULL default '0',
  timezoneoffset varchar(4) NOT NULL default '',
  emailnotification smallint(6) NOT NULL default '0',
  buddylist mediumtext NOT NULL,
  ignorelist mediumtext NOT NULL,
  pmfolders mediumtext NOT NULL,
  receivepm smallint(6) NOT NULL default '0',
  emailonpm smallint(6) NOT NULL default '0',
  pmpopup smallint(6) NOT NULL default '0',
  avatarid smallint(6) NOT NULL default '0',
  avatarrevision int(6) unsigned NOT NULL default '0',
  options smallint(6) NOT NULL default '15',
  birthday date NOT NULL default '0000-00-00',
  maxposts smallint(6) NOT NULL default '-1',
  startofweek smallint(6) NOT NULL default '1',
  ipaddress varchar(20) NOT NULL default '',
  referrerid int(10) unsigned NOT NULL default '0',
  nosessionhash smallint(6) NOT NULL default '0',
  autorefresh smallint(6) NOT NULL default '-1',
  messagepopup tinyint(2) NOT NULL default '0',
  inforum smallint(5) unsigned NOT NULL default '0',
  ratenum smallint(5) unsigned NOT NULL default '0',
  ratetotal smallint(5) unsigned NOT NULL default '0',
  allowrate smallint(5) unsigned NOT NULL default '1',
  PRIMARY KEY  (userid),
  KEY usergroupid (usergroupid),
  KEY username (username),
  KEY inforum (inforum)
) TYPE=MyISAM;
INSERT INTO user VALUES 
(33,6,'Kevin','0','[EMAIL PROTECTED]',1,'',0,'http://www.stileproject.com','','','','',1,1,0,'Administrator',0,996120694,1,-1,1030996168,1031027028,1030599436,36,'-6',0,'','','',1,0,1,0,0,15,'0000-00-00',-1,1,'64.0.0.0',0,1,-1,0,0,4,19,1);

SELECT DISTINCT privatemessage.*, user.* FROM privatemessage LEFT JOIN user ON 
(user.userid = privatemessage.touserid);



>Fix:
Unknown

I'm happy to try any patches or poke around in GDB if needed though.


>Submitter-Id:  Kevin Day
>Originator:    Kevin Day
>Organization:
Stile Project, Inc.
>MySQL support: none
>Synopsis:      SELECT DISTINCT w/LEFT JOIN segfault in 4.0.3
>Severity:      serious
>Priority:      medium
>Category:      mysql
>Class:         sw-bug
>Release:       mysql-4.0.3-beta (Source distribution)
>Server: /usr/local/bin/mysqladmin  Ver 8.37 Distrib 4.0.3-beta, for 
>unknown-freebsdelf4.6 on i386
Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
This software comes with ABSOLUTELY NO WARRANTY. This is free software,
and you are welcome to modify and redistribute it under the GPL license

Server version          4.0.3-beta
Protocol version        10
Connection              Localhost via UNIX socket
UNIX socket             /tmp/mysql.sock
Uptime:                 6 sec

Threads: 1  Questions: 1  Slow queries: 0  Opens: 0  Flush tables: 1  Open tables: 0  
Queries per second avg: 0.167
>Environment:
        
System: FreeBSD server1.stileproject.com 4.6-STABLE FreeBSD 4.6-STABLE #12: Thu Aug 22 
10:45:04 CDT 2002     [EMAIL PROTECTED]:/usr/src/sys/compile/SERVER  i386


Some paths:  /usr/bin/perl /usr/bin/make /usr/local/bin/gmake /usr/bin/gcc /usr/bin/cc
GCC: Using builtin specs.
gcc version 2.95.4 20020320 [FreeBSD]
Compilation info: CC='gcc'  CFLAGS=''  CXX='g++'  CXXFLAGS=''  LDFLAGS=''
LIBC: 
-r--r--r--  1 root  wheel  1227602 Aug  9 16:56 /usr/lib/libc.a
lrwxr-xr-x  1 root  wheel  9 Aug  9 16:56 /usr/lib/libc.so -> libc.so.4
-r--r--r--  1 root  wheel  585420 Aug  9 16:56 /usr/lib/libc.so.4
Configure command: ./configure 
Perl: This is perl, version 5.005_03 built for i386-freebsd

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