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ID# Date Updated Type Status Sev Version Target OS CPU Summary Assigned
81132005-01-24
15:43
2018-09-09
20:45
MySQL Server: OptimizerVerified
(3748 days)
S55.0, 5.1, azalea bzrAnyAnySelect with between optimization  
81682005-01-27
18:09
2018-09-09
20:45
MySQL Server: OptimizerVerified
(2128 days)
S35.0-bkAnyAnyHELP commands processing different from regular with --ps-protocol  
86622005-02-21
21:31
2018-09-09
20:45
MySQL Server: OptimizerVerified
(3644 days)
S56.0.14, 5.1.12-BK, 4.1.10AnyAnyoptimizer, query takes 3 to 10 times as long when using index  
87492005-02-23
21:08
2018-09-09
20:45
MySQL Server: OptimizerVerified
(3705 days)
S34.1.10, 5.0.67Any (*)AnyEXPLAIN report different "type" w and w/o USE INDEX(...) for the same used key  
119482005-07-14
18:00
2018-09-09
20:45
MySQL Server: OptimizerVerified
(5224 days)
S35.0AnyAnyMyISAM only, nested JOIN Views, dramatic performance loss  
121132005-07-22
14:23
2014-01-24
12:43
MySQL Server: OptimizerVerified
(2128 days)
S15.0.28-BK, 4.0,5.0AnyAnyComposite index chosen partially for ORDER BY ... LIMIT query. Assigned Account
140842005-10-17
20:09
2014-01-23
9:50
MySQL Server: OptimizerVerified
(2129 days)
S35.0-bkAnyAnyindex_merge access method not used for federated engine Assigned Account
172992006-02-10
12:35
2014-01-23
9:53
MySQL Server: OptimizerVerified
(2129 days)
S35.0.18Any (All)AnyInefficient optimizer for fulltext queries.  
177652006-02-28
11:12
2018-09-09
20:45
MySQL Server: OptimizerVerified
(5014 days)
S3AnyAnyBug in libMySQL.dll with EXPLAIN Evgeny Potemkin
184652006-03-23
17:43
2018-09-09
20:45
MySQL Server: OptimizerVerified
(3710 days)
S25.0.20-BK, 5.0.19, 5.0.85Any (any)AnyOptimizer/execution plan bug with dependent subqueries in ON clauses of JOINs  
268322007-03-04
18:17
2011-04-05
14:46
MySQL Server: OptimizerVerified
(3153 days)
S55.5AnyAnyENUM types not optimized  
285542007-05-21
9:32
2018-09-09
20:45
MySQL Server: OptimizerVerified
(3836 days)
S34.1.22, 5.0.42-BKAnyAnyOptimizer wrongly prefers index for (col = value) over (PK <= value)  
294212007-06-28
13:43
2018-09-09
20:45
MySQL Server: OptimizerVerified
(4530 days)
S25.1.14-beta/5.0AnyAnyMySQL allows mixing of GROUP columns with no GROUP columns in complex terms  
294332007-06-29
0:03
2018-09-09
20:45
MySQL Server: OptimizerVerified
(3644 days)
S35.0.27, 5.0, 5.1, 4.1, 5.2 BK, 6.0.14-bzrAnyAnycomposite index not used  
294432007-06-29
13:28
2018-09-09
20:45
MySQL Server: OptimizerVerified
(3326 days)
S35.1.19AnyAnycost calculations are off  
303022007-08-08
12:41
2018-09-09
20:45
MySQL Server: OptimizerVerified
(3476 days)
S35.0.40, 5.1, 5.2, 5.0 BKAnyAnyQuery from EXPLAIN EXTENDED .. SHOW WARNINGS returns different result Evgeny Potemkin
303422007-08-09
18:52
2015-10-07
14:54
MySQL Server: OptimizerVerified
(1507 days)
S55.0.37, 5.6.17AnyAnyEquality propagation can make optimization much slower  
314462007-10-08
12:14
2018-09-09
20:45
MySQL Server: OptimizerVerified
(4054 days)
S55.0.44, 5.0.37, 6.0.2 AlphaAnyAnyInefficient index use with order by and joins  
319012007-10-29
2:51
2018-09-09
20:45
MySQL Server: OptimizerVerified
(4300 days)
S55.0.45AnyAnyread_rnd_buffer_size doesn't seem to be used as written in Reference Manual  
340782008-01-26
14:19
2018-09-09
20:45
MySQL Server: OptimizerVerified
(4291 days)
S34.1,5.0,5.1,6.0-BKAny (Linux)Anyref access is not used for varchar column Evgeny Potemkin
346662008-02-19
14:11
2018-09-09
20:45
MySQL Server: OptimizerVerified
(4225 days)
S35.0/5.1/6.0.4AnyAnyIncomplete metadata returned to client on view + group by + Innodb/Falcon Evgeny Potemkin
357242008-03-31
22:24
2018-09-09
20:45
MySQL Server: OptimizerVerified
(3915 days)
S2MySQL 5.0.51a-community-nt, 5.1, 6.0 BKAnyAnyNon-found left join data passed as a parameter to a function in WHERE  
361952008-04-18
2:29
2018-09-09
20:45
MySQL Server: OptimizerVerified
(4225 days)
S35.1-bkAnyAnymysqld calls handler->cond_push twice  
364222008-04-30
2:19
2018-09-09
20:45
MySQL Server: OptimizerVerified
(4223 days)
S36.0.xAnyAnyEXPLAIN EXTENDED; SHOW WARNINGS doesn't have ON expression for semi-joins  
368022008-05-19
15:42
2018-09-09
20:45
MySQL Server: OptimizerVerified
(4071 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
368172008-05-20
13:19
2018-09-09
20:45
MySQL Server: OptimizerVerified
(3792 days)
S55.0.54a,5.1.19, 5.1.25, 5.0.60, 5.5AnyAnyNon optimal index choice, depending on index creation order Assigned Account
370532008-05-29
4:11
2018-09-09
20:45
MySQL Server: OptimizerVerified
(4084 days)
S34.1, 5.0, 5.1,6.0.5Any (Linux, Solaris)AnyOptimizer unnecessarily uses temporary and filesort with ORDER BY Assigned Account
372642008-06-07
22:35
2018-09-09
20:45
MySQL Server: OptimizerVerified
(4054 days)
S55.1.24-rc 5.1.29-rc 5.1.30AnyAnyMySQL wrongly uses filesort  
373052008-06-10
9:53
2018-09-09
20:45
MySQL Server: OptimizerVerified
(4117 days)
S35.0/5.1/6.0, 5.7.18AnyAnyselect count(*); returns value  
382512008-07-21
0:29
2018-09-09
20:45
MySQL Server: OptimizerVerified
(4141 days)
S55.0.51AnyAnyUseless external queries should be ignored Evgeny Potemkin
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