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ID# Date Updated Type Status Sev Version Target OS CPU Summary Assigned
219782006-09-01
22:13
2011-02-16
23:43
MySQL Server: OptionsVerified
(4096 days)
S34.0.18, 5.0, 6.0.10, 5.55.5+Microsoft Windows (Windows 2000)Any'flush_time' value set for 1800 sec. on Non Win9x/Me installs by default  
589282010-12-14
20:58
2018-09-09
20:45
MySQL Server: OptimizerVerified
(2991 days)
S35.1-bugteamAnyAny"not exists" optimization not applied if relevant table is not single inner one  
915852018-07-10
1:16
2018-08-27
11:06
MySQL Server: Stored RoutinesVerified
(226 days)
S55.7, 8.0, 8.0.11, 5.7.23AnyAny“dead” code inside the stored proc or function can significantly slow it down  
483592009-10-27
19:24
2012-05-18
20:19
MySQL Cluster: Cluster (NDB) storage engineIn progress
(3164 days)
S3mysql-5.1-telco-7.1Linux (RHEL 4)AnyALTER TABLE xx COMMENT - locks large tables Assigned Account
602612011-02-26
0:59
2016-11-12
22:57
MySQL Cluster: Cluster (NDB) storage engineVerified
(831 days)
S5mysql-cluster-gpl-7.1.9aAnyAnyAre transaction hints needed in these situation?  
795472015-12-07
13:59
2015-12-11
12:25
MySQL Server: OptimizerOpen
(1170 days)
S35.6DebianAnybad performance query on mysql 5.6  
755042015-01-14
12:52
2015-01-22
14:51
MySQL Server: InnoDB storage engineVerified
(1491 days)
S5AnyAnybtr_search_guess_on_hash makes found block young twice?  
274522007-03-26
17:35
2018-09-09
20:45
MySQL Server: OptimizerVerified
(3748 days)
S35.0.40-BK, 5.0.24a-debian-log, 5.1.31-bzr, 6.0.7-alpha, 6.0.9-bzrLinuxAnyCorrelated subquery produces inefficient optimizer plan for INFORMATION_SCHEMA  
303422007-08-09
18:52
2015-10-07
14:54
MySQL Server: OptimizerVerified
(1233 days)
S55.0.37, 5.6.17AnyAnyEquality propagation can make optimization much slower  
685722013-03-05
10:57
2014-02-19
16:19
MySQL Server: Federated storage engineVerified
(2178 days)
S35.5.25a, 5.5.31AnyAnyFEDERATED using SHOW TABLE STATUS causes performance problems for InnoDB tables  
831512016-09-26
14:27
2019-01-26
4:54
MySQL Server: Connection HandlingVerified
(29 days)
S25.6.33CentOSAnyhigh number of SHOW WARNINGS can stall server if compressed protocol in use  
620182011-07-28
15:15
2018-02-11
20:45
MySQL Server: InnoDB storage engineVerified
(2227 days)
S55.6.3AnyAnyinnodb adaptive hash index mutex contention Assigned Account
759622015-02-19
3:14
2015-03-03
20:46
MySQL Server: InnoDB storage engineVerified
(1451 days)
S35.6.24, 5.7.6AnyAnyInnodb calls fsync when freeing a LRU page to fulfill page request  
559792010-08-13
22:05
2018-09-09
20:45
MySQL Server: OptimizerVerified
(3111 days)
S55.1.39LinuxAnyKey not used if IN() list contains mix of strings and integers  
351652008-03-08
17:48
2011-02-16
23:43
MySQL Server: CSVVerified
(3998 days)
S55.1AnyAnyLogging to table is slow for large queries  
597272011-01-25
21:36
2016-12-04
20:45
MySQL Server: InnoDB storage engineVerifiedS55.1 plugin, 5.5, 5.6AnyAnyLRU search can be inefficient with compression Assigned Account
569242010-09-22
11:26
2018-06-24
20:45
MySQL Workbench: SQL EditorVerified
(2638 days)
S25.2.28wb52Linux (Ubuntu 10.04)AnyMemory leak? Possibly not a bug.  
478842009-10-07
3:24
2018-09-09
20:45
MySQL Server: OptimizerVerified
(3310 days)
S25.1.39, 5.1.44, 5.5.99Linux (Linux web2 2.6.18-92.1.18.el5.028stab060.8 #1 SMP Mon Feb 9 21:44:50 MSK 2009 x86_64)AnyMySQL 5.1.39 failed to use index  
816302016-05-28
5:46
2016-08-31
6:30
MySQL Server: ReplicationVerified
(904 days)
S55.7.12AnyAnyMySQL 5.7 is 37-45% slower then 5.6 when using binlogging due to defaults change  
759812015-02-20
13:56
2017-11-05
7:12
MySQL Server: InnoDB storage engineVerified
(1414 days)
S55.7.6AnyAnyMySQL 5.7.5 30% slower than 5.6.23 for 1 thread write  
595572011-01-17
15:26
2018-09-09
20:45
MySQL Server: OptimizerVerified
(2957 days)
S25.1, 5.5AnyAnyMySQL uses order of fields in GROUP BY when ORDER BY NULL is specified  
569652010-09-23
9:22
2015-08-10
14:34
MySQL Server: mysqldump Command-line ClientVerified
(3067 days)
S35.1.445.1+Linux (2.6.18-164.6.1.el5 #1 SMP, CentOS 5.5)Anymysqldump poor performance with large number of tables  
783552015-09-07
15:53
2015-09-15
8:51
MySQL Server: OptimizerVerified
(1255 days)
S55.5.41, 5.5.46, 5.5.47Ubuntu (x64)Anynested select query not work on mysql 5.5 but it works well in mysql 5.6  
679132012-12-16
2:31
2017-07-18
5:39
Connector / ODBCVerified
(2222 days)
S55.2.2, 5.1.11Microsoft Windows (Windows 7 and 8 64-bit)AnyODBC connector performance problem Bogdan Degtyariov
463762009-07-24
17:05
2018-09-09
20:45
MySQL Server: OptimizerVerified
(3494 days)
S55.0.85, 5.1.36, 5.1.38, 5.1.39Microsoft Windows (XP)AnyOptimizer choose wrong index even when where clause and order-by are covered Tor Didriksen
711402013-12-13
9:16
2015-07-31
8:59
MySQL Server: OptimizerVerified
(1301 days)
S25.1, 5.5, 5.6.15, 5.7.7AnyAnyOptimizer does NOT use range checks in typical self-join for InnoDB tables  
600872011-02-10
13:14
2016-12-04
20:45
MySQL Server: InnoDB storage engineVerified
(2933 days)
S35.5AnyAnyPatch: Minimize InnoDB I/O load by adding a prefetch stage Assigned Account
899262018-03-06
10:20
2018-03-12
12:21
MySQL Server: C API (client library)Verified
(346 days)
S55.7Linuxx86Performance degradation in libmysqlclient 20  
442012009-04-10
3:04
2018-09-09
20:45
MySQL Server: OptimizerVerified
(3173 days)
S35.1.32, 5.1.35-bzr, 6.0.11-bzr, 5.0, 5.6.99AnyAnyPerformance problem with View  
643402012-02-15
14:07
2013-06-14
15:35
MySQL Server: InnoDB Plugin storage engineVerified
(2078 days)
S55.1.52, 5.1.61AnyAnyrace on no_flush event during buf_flush_free_margin  
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