Bug #55365 | MySQL does not evaluate TRUNCATE/ROUND + XOR consistently | ||
---|---|---|---|
Submitted: | 19 Jul 2010 14:17 | Modified: | 19 Jul 2010 14:46 |
Reporter: | Philip Stoev | Email Updates: | |
Status: | Verified | Impact on me: | |
Category: | MySQL Server: General | Severity: | S3 (Non-critical) |
Version: | 5.1.48, 5.5.6-m3-debug | OS: | Any |
Assigned to: | CPU Architecture: | Any |
[19 Jul 2010 14:17]
Philip Stoev
[19 Jul 2010 14:20]
Philip Stoev
TRUNCATE + OR is also affected
[19 Jul 2010 14:46]
Valeriy Kravchuk
Thank you for the bug report. Verified with 5.1.48 also: C:\Program Files\MySQL\MySQL Server 5.1\bin>mysql -uroot -proot -P3310 test Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 5 Server version: 5.1.48-community MySQL Community Server (GPL) Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved. This software comes with ABSOLUTELY NO WARRANTY. This is free software, and you are welcome to modify and redistribute it under the GPL v2 license Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> CREATE TABLE `X` ( -> `f1` double DEFAULT NULL, -> `f2` double DEFAULT NULL, -> `f3` double NOT NULL DEFAULT '0', -> `f4` double NOT NULL -> ); Query OK, 0 rows affected (0.30 sec) mysql> mysql> INSERT INTO `X` VALUES -> (NULL,NULL,0,0),(NULL,NULL,0,0),(7,0,0,0),(NULL,NULL,0,0),(NULL,NULL,0,0) ,(NULL,NULL,0,0),(NULL,0,0,0); Query OK, 7 rows affected (0.08 sec) Records: 7 Duplicates: 0 Warnings: 0 mysql> select ( ( f1 % ( ( ( TRUNCATE( f3 , f1 ) ) ) XOR ( f1 ) ) )) from X; +--------------------------------------------------------+ | ( ( f1 % ( ( ( TRUNCATE( f3 , f1 ) ) ) XOR ( f1 ) ) )) | +--------------------------------------------------------+ | NULL | | NULL | | NULL | | NULL | | NULL | | NULL | | NULL | +--------------------------------------------------------+ 7 rows in set (0.13 sec) mysql> select ( ( f1 % ( ( ( TRUNCATE( f3 , f1 ) ) ) XOR ( f1 ) ) )) from X WHER E f1; +--------------------------------------------------------+ | ( ( f1 % ( ( ( TRUNCATE( f3 , f1 ) ) ) XOR ( f1 ) ) )) | +--------------------------------------------------------+ | 0 | +--------------------------------------------------------+ 1 row in set (0.03 sec)
[19 Jul 2013 8:19]
Hartmut Holzgraefe
Still reproducible with 5.6.12