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ID# Date Updated Type Status Sev Version OS CPU Summary
893792018-01-24
11:41
2021-03-01
7:11
MySQL Server: Performance SchemaVerified
(1205 days)
S55.7.20, 5.7.21AnyAnysummary_by_user tables get extremely slow with many users.
752722014-12-19
8:34
2017-12-23
10:45
Connector / NETVerified
(1771 days)
S56.9.5.0Microsoft WindowsAnyPoor performance with Entity Framework Include Queries and Order By
492762009-12-01
17:03
2018-09-09
20:45
MySQL Server: OptimizerVerified
(4181 days)
S55.0.85-community-log, 5.0.89, 5.1.42LinuxAnyOptimization for IN (on InnoDB tables) depends on number of set elements
418712009-01-05
15:47
2018-09-09
20:45
MySQL Server: MyISAM storage engineVerified
(4241 days)
S55.1.30Any (MS Windows, Mac OS X)AnySelect + Index + Limit + offset on large MyIsam tables give very bad performance
521702010-03-18
9:57
2018-09-09
20:45
MySQL Server: OptimizerVerified
(4070 days)
S55.1.44, mysql-next-mtLinux (fc12)Anyinnodb query optimizer fails (null possible_keys) with multicolumn key
343102008-02-05
14:51
2018-09-09
20:45
MySQL Server: OptimizerVerified
(2703 days)
S55.0.51a-log, 5.0.54, 5.6.14LinuxAnyOptimizer is inefficient by using ORDER BY function() and LIMIT
81132005-01-24
15:43
2018-09-09
20:45
MySQL Server: OptimizerVerified
(4286 days)
S55.0, 5.1, azalea bzrAnyAnySelect with between optimization
777992015-07-22
13:36
2015-07-22
13:41
MySQL WorkbenchVerified
(2122 days)
S56.3.4Ubuntu (15.04)AnyMySQL Workbench Lockup when autosaving
827252016-08-25
15:55
2016-09-14
6:28
MySQL Server: OptimizerVerified
(1702 days)
S55.7.14, 5.7.15CentOS (Linux rda-db-rep.ucar.edu 3.10.0-327.28.2.el7.x86_64 #1 SMP Wed Aug 3 11:11:39 UTC 2016 x86_64 x86_6)AnyExtremely slow query when optimizer_switch='derived_merge=ON'
891492018-01-08
23:41
2018-01-16
17:07
MySQL Server: OptimizerVerified
(1213 days)
S55.7.20Red Hat (7.4)AnySELECT DISTINCT on multiple TEXT columns is slow
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