>Description:
join with OR and LIMIT fails to return result
>How-To-Repeat:
This query fails to return a result:
mysql> SELECT Subscriptions.UID FROM Subscriptions, Accounts WHERE
Accounts.UID = Subscriptions.User AND (Accounts.Email = 'bill' OR
Accounts.UName = 'bill') ORDER BY Subscriptions.Created DESC limit 1;
Empty set (0.02 sec)
But, if I remove one of the parenthesized OR tokens, it works:
mysql> SELECT Subscriptions.UID FROM Subscriptions, Accounts WHERE
Accounts.UID = Subscriptions.User AND Accounts.UName = 'bill' ORDER BY
Subscriptions.Created DESC limit 1;
+-----+
| UID |
+-----+
| 255 |
+-----+
1 row in set (0.00 sec)
Or, if I remove the LIMIT, it works:
mysql> SELECT Subscriptions.UID FROM Subscriptions, Accounts WHERE
Accounts.UID = Subscriptions.User AND (Accounts.Email = 'bill' OR
Accounts.UName = 'bill') ORDER BY Subscriptions.Created DESC;
+-----+
| UID |
+-----+
| 255 |
+-----+
1 row in set (0.11 sec
I've already worked around this, I'm just letting you guys know.
>Fix:
>Submitter-Id: <submitter ID>
>Originator: Bill Marrs
>Organization:
>MySQL support: [none | licence | email support | extended email support ]
>Synopsis: join with OR and LIMIT fails to return result
>Severity:
>Priority:
>Category: mysql
>Class:
>Release: mysql-4.0.4-beta (Official MySQL RPM)
>Server: /usr/bin/mysqladmin Ver 8.37 Distrib 4.0.4-beta, for pc-linux-gnu on i686
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 4.0.4-beta-log
Protocol version 10
Connection Localhost via UNIX socket
UNIX socket /var/lib/mysql/mysql.sock
Uptime: 3 hours 46 min 41 sec
Threads: 25 Questions: 493984 Slow queries: 28 Opens: 1332 Flush tables: 1 Open
tables: 64 Queries per second avg: 36.320
>Environment:
System: Linux KenyonHill.com 2.4.18 #2 SMP Tue Apr 9 22:46:52 EDT 2002 i686 unknown
Architecture: i686
Some paths: /usr/bin/perl /usr/bin/make /usr/bin/gmake /usr/bin/gcc /usr/bin/cc
GCC: Reading specs from /usr/lib/gcc-lib/i386-redhat-linux/2.96/specs
gcc version 2.96 20000731 (Red Hat Linux 7.2 2.96-112.7.2)
Compilation info: CC='gcc' CFLAGS='-O6 -fno-omit-frame-pointer -mpentium' CXX='gcc'
CXXFLAGS='-O6 -fno-omit-frame-pointer -felide-constructors
-fno-exceptions -fno-rtti -mpentium' LDFLAGS=''
LIBC:
lrwxrwxrwx 1 root root 13 Nov 12 08:51 /lib/libc.so.6 -> libc-2.2.4.so
-rwxr-xr-x 1 root root 5737154 Oct 10 12:50 /lib/libc-2.2.4.so
-rw-r--r-- 1 root root 27338282 Oct 10 12:48 /usr/lib/libc.a
-rw-r--r-- 1 root root 178 Oct 10 12:48 /usr/lib/libc.so
Configure command: ./configure --disable-shared --with-mysqld-ldflags=-all-static
--with-client-ldflags=-all-static --without-berkeley-db --with-innodb --without-vio
--without-openssl --enable-assembler --enable-local-infile --with-mysqld-user=mysql
--with-unix-socket-path=/var/lib/mysql/mysql.sock --prefix=/
--with-extra-charsets=complex --exec-prefix=/usr --libexecdir=/usr/sbin
--sysconfdir=/etc --datadir=/usr/share --localstatedir=/var/lib/mysql
--infodir=/usr/share/info --includedir=/usr/include --mandir=/usr/share/man
--with-embedded-server --enable-thread-safe-client '--with-comment=Official MySQL RPM'
CC=gcc 'CFLAGS=-O6 -fno-omit-frame-pointer -mpentium' 'CXXFLAGS=-O6
-fno-omit-frame-pointer -felide-constructors -fno-exceptions -fno-rtti
-mpentium' CXX=gcc
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