Showing all 27 (Edit, Save, CSV, Feed)
ID# Date Updated Type Status Sev Version Target OS CPU Summary Assigned
262322007-02-09
17:28
2018-09-09
20:45
MySQL Server: OptimizerVerified
(4631 days)
S34.1.22, 5.0.34, 5.0.36-BKLinux (Linux)Anyreview of bug #20944 / proof of concept attached  
294432007-06-29
13:28
2018-09-09
20:45
MySQL Server: OptimizerVerified
(3294 days)
S35.1.19AnyAnycost calculations are off  
368022008-05-19
15:42
2018-09-09
20:45
MySQL Server: OptimizerVerified
(4039 days)
S35.0, 5.1, 6.0 BK5.6+AnyAnyMySQL only use covered index when selecting from a view (or subquery) with union Evgeny Potemkin
420942009-01-13
23:01
2018-09-09
20:45
MySQL Server: OptimizerVerified
(3864 days)
S35.15.6+AnyAnyOptimizer chooses a wrong index when group by, order by and limit is present  
429482009-02-17
23:02
2018-09-09
20:45
MySQL Server: OptimizerVerified
(3884 days)
S55.0.67-0ubuntu6, 6.0.11Linux (Ubuntu 8.10)AnyMySQL Optimizer does not properly use Indexes on Views with "Group By"  
442012009-04-10
3:04
2018-09-09
20:45
MySQL Server: OptimizerVerified
(3415 days)
S35.1.32, 5.1.35-bzr, 6.0.11-bzr, 5.0, 5.6.99AnyAnyPerformance problem with View  
445492009-04-29
17:47
2018-09-09
20:45
MySQL Server: OptimizerVerifiedS35.0.80, 5.1.34AnyAnyoptimizer incorrectly chooses table scan and filesort over index  
463762009-07-24
17:05
2018-09-09
20:45
MySQL Server: OptimizerVerified
(3736 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
474542009-09-19
19:33
2018-09-09
20:45
MySQL Server: OptimizerVerified
(3683 days)
S35.1.35AnyAnyNot exists optimization method is not used for NULL columns in the right table  
480492009-10-14
16:46
2018-09-09
20:45
MySQL Server: OptimizerVerifiedS35.1.37, 5.5.7AnyAnySELECT MIN(1) reports differently for MERGE tables in 5.0 and 5.1  
581012010-11-10
0:21
2018-09-09
20:45
MySQL Server: OptimizerVerified
(3266 days)
S55.1.38-community-log, 5.1.54-bzrLinuxAnyOptimizer picks wrong order of queries  
673512012-10-24
8:02
2017-05-03
16:04
MySQL Server: PartitionsVerified
(2515 days)
S25.5.27-29.0LinuxAnyCardinality samples of partitioned tables sometimes widely off  
685542013-03-03
16:16
2016-10-09
20:45
MySQL Server: OptimizerVerified
(2408 days)
S55.6.10AnyAnyOptimizer wrongly choses covering index over ICP Assigned Account
711912013-12-20
15:30
2013-12-20
20:20
MySQL Server: OptimizerVerified
(2131 days)
S35.5.33AnyAnyLoose index scan is used even though full table scan/tight index scan is faster  
711892013-12-20
14:56
2014-01-13
9:53
MySQL Server: DocumentationVerified
(2131 days)
S35.5, anyAnyAnyManual does not provide enough details on how loose index scan really works Paul Dubois
711992013-12-21
18:16
2014-01-28
17:45
MySQL Server: OptimizerVerified
(2128 days)
S35.6.14, 5.6.15, 5.5.35AnyAnyOptimizer's estimated number of rows is 2 times wrong for (loose?) index scans  
740492014-09-24
8:01
2014-09-24
10:01
MySQL Server: OptimizerVerified
(1853 days)
S35.6.19-67.0, 5.6.22AnyAnyUpdate query use filesort instead of index  
740832014-09-25
18:11
2014-10-09
12:58
MySQL Server: OptimizerVerified
(1838 days)
S55.6.20, 5.6.22Linux (CentOS 6.5)AnyENUM index scan is slower than INT index scan  
303422007-08-09
18:52
2015-10-07
14:54
MySQL Server: OptimizerVerified
(1475 days)
S55.0.37, 5.6.17AnyAnyEquality propagation can make optimization much slower  
800672016-01-20
10:50
2016-02-15
12:44
MySQL Server: OptimizerVerified
(1370 days)
S35.6.28, 5.7.10AnyAnyIndex on BIT column is NOT used when column name only is used in WHERE clause  
830622016-09-20
13:18
2018-04-24
20:15
MySQL Server: OptimizerVerified
(1125 days)
S35.6.32, 5.7.14, 5.6.33, 5.7.15AnyAnyit's no longer possible to determine used key parts by looking at key_length  
830712016-09-21
8:02
2016-09-21
8:34
MySQL Server: OptimizerVerified
(1125 days)
S35.7.14, 5.6.*, 5.7.15AnyAnyMySQL prefers first declared index over more useful other indexes  
832482016-10-03
15:57
2017-09-07
15:45
MySQL Server: OptimizerVerified
(1113 days)
S38.0.0, 5.7.15AnyAnyPartition pruning is not working with LEFT JOIN  
833232016-10-10
18:02
2018-04-13
12:41
MySQL Server: OptimizerVerified
(910 days)
S35.7, 5.6, 8.0.1AnyAnyOptimizer chooses wrong plan when joining 2 tables  
860362017-04-21
10:08
2018-11-13
7:55
MySQL Server: InnoDB storage engineVerified
(911 days)
S35.7/8.0AnyAnyInnoDB FULLTEXT index has too strict innodb_ft_result_cache_limit max limit  
933602018-11-27
9:41
2018-12-12
14:48
MySQL Server: OptimizerVerified
(313 days)
S55.6.16,5.7.23Linuxx86mysterious optimizer behavior  
970012019-09-25
0:35
2019-10-01
7:58
MySQL Server: OptimizerVerified
(25 days)
S25.7, 5.7.27AnyAnyDangerous optimization reconsidering_access_paths_for_index_ordering  
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