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ID# Date Type Status Sev Version Target OS Summary Assigned
262322007-02-09
18:28
Server: OptimizerVerified
(1012 days)
S34.1.22, 5.0.34, 5.0.36-BKLinux (Linux)review of bug #20944 / proof of concept attached Sergey Petrunya
271992007-03-16
6:03
Server: OptimizerVerified
(403 days)
S25.0.22, 5.0.37, 4.1 BK, 5.1 BKLinux (linux)Performance problem when query contains a left join against a subquery Ramil Kalimullin
279752007-04-20
13:20
Server: OptimizerVerified
(403 days)
S35.0.38, 5.0.44, 4.1, 5.0, 5.1, 5.2 BKLinux (RHEL 4)optimizer error after discovering impossible where clause in a large view Igor Babaev
294432007-06-29
15:28
Server: OptimizerIn progress
(852 days)
S35.1.19Anycost calculations are off Sergey Petrunya
303422007-08-09
20:52
Server: OptimizerAnalyzing
(757 days)
S55.0.37AnyEquality propagation can make optimization much slower Valeriy Kravchuk
311882007-09-25
18:52
Server: OptimizerVerified
(739 days)
S55.0.37AnyOptimizer does not do index range scans using predicates in IN lists  
316482007-10-16
21:01
Server: OptimizerVerified
(737 days)
S25.1.22, 5.0.50Anyfull table scans being done when range should be used Sergey Petrunya
333212007-12-18
7:34
Server: OptimizerVerified
(237 days)
S35.0.52, 5.0-bzr, 5.1-bzrAnyprint_plan does not print appropriate values.  
357942008-04-03
14:06
Server: OptimizerVerified
(525 days)
S35.0.45, 5.0, 5.1, 6.0 BKAnyVery bad query optimization on DELETE with subquery Sergey Petrunya
364742008-05-02
16:13
Server: FalconVerifiedS36.0.56.0-rcAnyFalcon reports unrealistic row estimate on simple key lookup Ann Harrison
365622008-05-07
13:55
Server: FalconVerifiedS26.0.56.0-rcAnyFalcon reports unrealistic row estimate with IN() Ann Harrison
368022008-05-19
17:42
Server: OptimizerVerified
(420 days)
S35.0, 5.1, 6.0 BKAnyMySQL only use covered index when selecting from a view (or subquery) with union Gleb Shchepa
375772008-06-23
8:40
Server: FalconVerified
(516 days)
S5MySQL6.06.0-rcLinux (SLES10SP1 (2.6.16.46-0.12-smp, x64))Query Q9 of DBT3 is running on Falcon slower than Innodb Ann Harrison
387452008-08-12
11:44
Server: OptimizerVerified
(3 days)
S25.1AnyMySQL 5.1 optimizer uses filesort for ORDER BY when it should use index Gleb Shchepa
420942009-01-14
0:01
Server: OptimizerVerified
(245 days)
S35.1AnyOptimizer chooses a wrong index when group by, order by and limit is present Gleb Shchepa
429482009-02-18
0:02
Server: OptimizerVerified
(265 days)
S55.0.67-0ubuntu6, 6.0.11Linux (Ubuntu 8.10)MySQL Optimizer does not properly use Indexes on Views with "Group By"  
433192009-03-03
3:24
Server: OptimizerVerifiedS35.0, 5.1AnyTable/index scan when quoting large numbers in an 'IN' of a SELECT ... WHERE Evgeny Potemkin
442012009-04-10
5:04
Server: OptimizerVerified
(224 days)
S35.1.32, 5.1.35-bzr, 6.0.11-bzrAnyPerformance problem with View Gleb Shchepa
445492009-04-29
19:47
Server: OptimizerVerifiedS35.0.80, 5.1.34Anyoptimizer incorrectly chooses table scan and filesort over index  
452272009-06-01
0:48
Server: OptimizerNeed Doc Info
(10 days)
S35.45.4+AnyQueries with IN + condition, HAVING, ORDER BY 'pk' and LIMIT produce bad results Evgeny Potemkin
463762009-07-24
19:05
Server: OptimizerVerified
(117 days)
S55.0.85, 5.1.36, 5.1.38, 5.1.39Microsoft Windows (XP)Optimizer choose wrong index even when where clause and order-by are covered  
474542009-09-19
21:33
Server: OptimizerVerified
(64 days)
S35.1.35AnyNot exists optimization method is not used for NULL columns in the right table  
480492009-10-14
18:46
Server: OptimizerVerifiedS35.1.37AnySELECT MIN(1) reports differently for MERGE tables in 5.0 and 5.1  
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