jfield, Thursday, October 10, 2002, 1:33:10 AM, you wrote: jazdc> >Description: jazdc> After adding a key to a nullable column, null values will jazdc> successfully join through to null values in other tables. jazdc> This only seems to happen when the index is added after jazdc> the row contains null values. This affects both MyISAM jazdc> and InnoDB table types and both binary versions 3.23.42 jazdc> and 4.0.4.
jazdc> >How-To-Repeat: jazdc> Run the following queries. The first select will return 0 jazdc> rows, which is correct. The second select will return a jazdc> match - but all that was changed was the adding of an index. jazdc> mysql> create table foo (id int); jazdc> Query OK, 0 rows affected (0.01 sec) jazdc> mysql> insert into foo values (null), (0); jazdc> Query OK, 2 rows affected (0.01 sec) jazdc> Records: 2 Duplicates: 0 Warnings: 0 jazdc> mysql> create table bar (id int); jazdc> Query OK, 0 rows affected (0.00 sec) jazdc> mysql> insert into bar values (null); jazdc> Query OK, 1 row affected (0.00 sec) jazdc> mysql> select * from foo, bar where foo.id = bar.id; jazdc> Empty set (0.00 sec) jazdc> mysql> alter table foo add key id (id); jazdc> Query OK, 2 rows affected (0.01 sec) jazdc> Records: 2 Duplicates: 0 Warnings: 0 jazdc> mysql> select * from foo, bar where foo.id = bar.id; jazdc> +------+------+ jazdc> | id | id | jazdc> +------+------+ jazdc> | NULL | NULL | jazdc> +------+------+ jazdc> 1 row in set (0.00 sec) jazdc> mysql> Hi! Thank you for bug report! This bug is already fixed in latest 4.0 BK tree. -- For technical support contracts, goto https://order.mysql.com/?ref=ma02-010c This email is sponsored by Ensita.net http://www.ensita.net/ __ ___ ___ ____ __ / |/ /_ __/ __/ __ \/ / Victoria Reznichenko / /|_/ / // /\ \/ /_/ / /__ [EMAIL PROTECTED] /_/ /_/\_, /___/\___\_\___/ MySQL AB / Ensita.net <___/ www.mysql.com --------------------------------------------------------------------- Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail <[EMAIL PROTECTED]> To unsubscribe, e-mail <[EMAIL PROTECTED]> Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
